Integer overflow in X.org libXcursor 1.1.13 and earlier allows X servers to trigger allocation of insufficient memory and a buffer overflow via vectors related to the _XcursorFileHeaderCreate function.

The remote Redhat Enterprise Linux 5 host has one or more packages installed that are affected by multiple vulnerabilities that have been acknowledged by the vendor but will not be patched.

  - libxcursor: 1-byte heap-based overflow in _XcursorThemeInherits function in library.c (CVE-2015-9262)

  - Integer overflow in X.org libXcursor 1.1.13 and earlier allows X servers to trigger allocation of     insufficient memory and a buffer overflow via vectors related to the _XcursorFileHeaderCreate function.
    (CVE-2013-2003)

  - libXcursor before 1.1.15 has various integer overflows that could lead to heap buffer overflows when     processing malicious cursors, e.g., with programs like GIMP. It is also possible that an attack vector     exists against the related code in cursor/xcursor.c in Wayland through 1.14.0. (CVE-2017-16612)

Note that Nessus has not tested for these issues but has instead relied on the package manager's report that the package is installed.

Tobias Stoeckmann reports :

The libXcursor fix for CVE-2013-2003 has never been imported into wayland, leaving it vulnerable to it.

The version of Oracle Secure Global Desktop installed on the remote host is 4.71, 5.2, or 5.3 and is missing a security patch from the April 2017 Critical Patch Update (CPU). It is, therefore, affected by multiple vulnerabilities :

  - An integer overflow condition exists in the Window System     (X11) subcomponent in multiple functions in X.Org libExt     due to improper validation of user-supplied input when     calculating the amount of memory required to handle     return data. An unauthenticated, remote attacker can     exploit this to cause a denial of service condition or     the execution of arbitrary code. Note that this issue     only affects version 4.71. (CVE-2013-1982)

  - An integer overflow condition exists in X.Org libXfixes     in the XFixesGetCursorImage() function when handling     large cursor dimensions or name lengths due to improper     validation of user-supplied input. An unauthenticated,     remote attacker can exploit this to cause a denial of     service condition or the execution of arbitrary code.
    (CVE-2013-1983)

  - An integer overflow condition exists within multiple     functions in X.Org libXi due to improper validation of     user-supplied input when calculating the amount of     memory needed to handle return data. An unauthenticated,     remote attacker can exploit this to cause a denial of     service condition or the execution of arbitrary code.
    (CVE-2013-1984)

  - An integer overflow condition exists in X.Org     libXinerama in the XineramaQueryScreens() function due     to improper validation of user-supplied input when     calculating the amount of memory needed to handle return     data. An unauthenticated, remote attacker can exploit     this to cause a denial of service condition or the     execution of arbitrary code. (CVE-2013-1985)

  - An integer overflow condition exists in multiple     functions in X.Org libXrandr due to improper validation     of user-supplied input when calculating the amount of     memory needed to handle return data. An unauthenticated,     remote attacker can exploit this to cause a denial of     service condition or the execution of arbitrary code.
    (CVE-2013-1986)

  - An integer overflow condition exists in multiple     functions in X.Org libXrender due to improper validation     of user-supplied input when calculating the amount of     memory needed to handle return data. An unauthenticated,     remote attacker can exploit this to cause a denial of     service condition or the execution of arbitrary code.
    (CVE-2013-1987)

  - An overflow condition exists in X.Org libXi in the     XListInputDevices() function, related to an unexpected     sign extension, due to improper checking of the amount     of memory needed to handle returned data when converting     smaller integer types to larger ones. An     unauthenticated, remote attacker can exploit this to     cause a denial of service condition or the execution of     arbitrary code. (CVE-2013-1995)

  - An overflow condition exists within multiple functions     in X.Org LibXi due to improper validation of     user-supplied input. An unauthenticated, remote attacker     can exploit this, via a specially crafted length or     index, to cause a denial of service condition or the     execution of arbitrary code. (CVE-2013-1998)

  - An overflow condition exists in X.Org LibXt in the
    _XtResourceConfigurationEH() function due to improper     validation of user-supplied input. An unauthenticated,     remote attacker can exploit this, via a specially     crafted length or index, to cause a denial of service     condition or the execution of arbitrary code.
    (CVE-2013-2002)

  - An integer overflow condition exists in X.Org libXcursor     in the  _XcursorFileHeaderCreate() function due to     improper validation of user-supplied input. An     unauthenticated, remote attacker can exploit this, via     a specially crafted file, to cause a denial of service     condition or the execution of arbitrary code.
    (CVE-2013-2003)

  - An uninitialized pointer flaw exists within multiple     functions in X.Org LibXt due to a failure to check for     proper initialization of pointers. An unauthenticated,     remote attacker can exploit this to corrupt memory,     resulting in a denial of service condition or the     possible execution of arbitrary code. (CVE-2013-2005)

  - A flaw exists in the Application Server subcomponent     (Apache Tomcat) due to a failure to process passwords     when they are paired with non-existent usernames. An     authenticated, remote attacker can exploit this, via a     timing attack, to enumerate user account names.
    (CVE-2016-0762)

  - Multiple integer overflow conditions exist in s3_srvr.c,     ssl_sess.c, and t1_lib.c due to improper use of pointer     arithmetic for heap-buffer boundary checks. An     unauthenticated, remote attacker can exploit these to     cause a denial of service. (CVE-2016-2177)

  - An information disclosure vulnerability exists in the     dsa_sign_setup() function in dsa_ossl.c due to a failure     to properly ensure the use of constant-time operations.
    An unauthenticated, remote attacker can exploit this,     via a timing side-channel attack, to disclose DSA key     information. (CVE-2016-2178)

  - A denial of service vulnerability exists in the DTLS     implementation due to a failure to properly restrict the     lifetime of queue entries associated with unused     out-of-order messages. An unauthenticated, remote     attacker can exploit this, by maintaining multiple     crafted DTLS sessions simultaneously, to exhaust memory.
    (CVE-2016-2179)

  - An out-of-bounds read error exists in the X.509 Public     Key Infrastructure Time-Stamp Protocol (TSP)     implementation. An unauthenticated, remote attacker can     exploit this, via a crafted time-stamp file that is     mishandled by the 'openssl ts' command, to cause a     denial of service or to disclose sensitive information.
    (CVE-2016-2180)

  - A denial of service vulnerability exists in the     Anti-Replay feature in the DTLS implementation due to     improper handling of epoch sequence numbers in records.
    An unauthenticated, remote attacker can exploit this,     via spoofed DTLS records, to cause legitimate packets to     be dropped. (CVE-2016-2181)

  - An overflow condition exists in the BN_bn2dec() function     in bn_print.c due to improper validation of     user-supplied input when handling BIGNUM values. An     unauthenticated, remote attacker can exploit this to     crash the process. (CVE-2016-2182)

  - A vulnerability exists, known as SWEET32, in the 3DES     and Blowfish algorithms due to the use of weak 64-bit     block ciphers by default. A man-in-the-middle attacker     who has sufficient resources can exploit this     vulnerability, via a 'birthday' attack, to detect a     collision that leaks the XOR between the fixed secret     and a known plaintext, allowing the disclosure of the     secret text, such as secure HTTPS cookies, and possibly     resulting in the hijacking of an authenticated session.
    (CVE-2016-2183)

  - A flaw exists in the Core subcomponent, specifically in     the libcurl library, due to improper validation of TLS     certificates. An authenticated, remote attacker with the     ability to intercept network traffic can exploit this     issue to disclose or manipulate transmitted data by     spoofing the TLS/SSL server using a certificate that     appears valid. Note that this issue only affects     versions 5.2 and 5.3. (CVE-2016-3739)

  - A flaw exists in cURL and libcurl when loading dynamic     link library (DLL) files security.dll, secur32.dll, or     ws2_32.dll due searching an insecure path which may not     be trusted or under user control. A local attacker can     exploit this, via a Trojan DLL file placed in the search     path, to execute arbitrary code with the privileges of     the user running the program. (CVE-2016-4802)

  - A security bypass vulnerability exists in Apache Tomcat     due to an unspecified flaw related to web applications.
    A local attacker can exploit this, via a utility method     that is available to web applications, to bypass a     configured SecurityManager. (CVE-2016-5018)

  - An out-of-bounds access error exists in the Window     System (X11) subcomponent, specifically in the     XvQueryAdaptors() function in file Xv.c, when handling     server responses. An authenticated, remote attacker can     exploit this to impact confidentiality, integrity, and     availability. (CVE-2016-5407)

  - A use-after-free error exists in cURL and libcurl within     file lib/vtls/vtls.c due to the program attempting to     resume TLS sessions even if the client certificate     fails. An unauthenticated, remote attacker can exploit     this to bypass validation mechanisms, allowing the     attacker to possibly control which connection is used.
    (CVE-2016-5419)

  - A flaw exists in cURL and libcurl in the     Curl_ssl_config_matches() function within file     lib/vtls/vtls.c due to the program reusing TLS     connections with different client certificates. An     unauthenticated, remote attacker can exploit this to     disclose sensitive cross-realm information.
    (CVE-2016-5420)

  - A use-after-free error exists in cURL and libcurl in     in the close_all_connections() function within file     lib/multi.c due to connection pointers not being     properly cleared. An unauthenticated, remote attacker     can exploit this to have an unspecified impact on     confidentiality, integrity, and availability.
    (CVE-2016-5421)

  - A flaw exists in the tls_decrypt_ticket() function     in t1_lib.c due to improper handling of ticket HMAC     digests. An unauthenticated, remote attacker can exploit     this, via a ticket that is too short, to crash the     process, resulting in a denial of service.
    (CVE-2016-6302)

  - An integer overflow condition exists in the     MDC2_Update() function in mdc2dgst.c due to improper     validation of user-supplied input. An unauthenticated,     remote attacker can exploit this to cause a heap-based     buffer overflow, resulting in a denial of service     condition or possibly the execution of arbitrary code.
    (CVE-2016-6303)

  - A flaw exists in the ssl_parse_clienthello_tlsext()     function in t1_lib.c due to improper handling of overly     large OCSP Status Request extensions from clients. An     unauthenticated, remote attacker can exploit this, via     large OCSP Status Request extensions, to exhaust memory     resources, resulting in a denial of service condition.
    (CVE-2016-6304)

  - A flaw exists in the SSL_peek() function in     rec_layer_s3.c due to improper handling of empty     records. An unauthenticated, remote attacker can exploit     this, by triggering a zero-length record in an SSL_peek     call, to cause an infinite loop, resulting in a denial     of service condition. (CVE-2016-6305)

  - An out-of-bounds read error exists in the certificate     parser that allows an unauthenticated, remote attacker     to cause a denial of service via crafted certificate     operations. (CVE-2016-6306)

  - A denial of service vulnerability exists in the     state-machine implementation due to a failure to check     for an excessive length before allocating memory. An     unauthenticated, remote attacker can exploit this, via a     crafted TLS message, to exhaust memory resources.
    (CVE-2016-6307)

  - A denial of service vulnerability exists in the DTLS     implementation due to improper handling of excessively     long DTLS messages. An unauthenticated, remote attacker     can exploit this, via a crafted DTLS message, to exhaust     available memory resources. (CVE-2016-6308)

  - A flaw exists in Apache Tomcat within SecurityManager     due to improper restriction of access to system     properties by the configuration files system property     replacement feature. A local attacker can exploit this,     via a crafted web application, to bypass SecurityManager     restrictions and disclose system properties.
    (CVE-2016-6794)

  - A flaw exists in Apache Tomcat that allows a local     attacker to bypass a configured SecurityManager by     changing the configuration parameters for the JSP     Servlet. (CVE-2016-6796)

  - A flaw exists in Apache Tomcat due to a failure to limit     web application access to global JNDI resources. A local     attacker can exploit this to gain unauthorized access to     resources. (CVE-2016-6797)

  - A flaw exists in Apache Tomcat when handling request     lines containing certain invalid characters. An     unauthenticated, remote attacker can exploit this to     conduct HTTP response splitting attacks by injecting     additional headers into responses. (CVE-2016-6816)

  - An infinite loop condition exists in Apache Tomcat in     the HTTP/2 parser when handling overly large headers. An     unauthenticated, remote attacker can exploit this, via a     specially crafted request, to cause a denial of service     condition. (CVE-2016-6817)

  - A carry propagation error exists in the     Broadwell-specific Montgomery multiplication procedure     when handling input lengths divisible by but longer than     256 bits. This can result in transient authentication     and key negotiation failures or reproducible erroneous     outcomes of public-key operations with specially crafted     input. A man-in-the-middle attacker can possibly exploit     this issue to compromise ECDH key negotiations that     utilize Brainpool P-512 curves. (CVE-2016-7055)

  - A flaw exists in cURL in the Curl_cookie_init() function     within file lib/cookie.c when handling cookies. An     unauthenticated, remote attacker can exploit this to     inject new cookies for arbitrary domains.
    (CVE-2016-8615)

  - A flaw exists in cURL in the ConnectionExists() function     within file lib/url.c when checking credentials supplied     for reused connections due to the comparison being     case-insensitive. An unauthenticated, remote attacker     can exploit this to authenticate without knowing the     proper case of the username and password.
    (CVE-2016-8616)

  - An integer overflow condition exists in cURL in the     base64_encode() function within file lib/base64.c due to     improper validation of certain input. An     unauthenticated, remote attacker can exploit this to     cause a denial of service condition or the execution of     arbitrary code. (CVE-2016-8617)

  - A denial of service vulnerability exists in cURL in the     alloc_addbyter() function within file lib/mprintf.c due     to improper validation of overly long input when it is     supplied to the curl_maprintf() API method. An     unauthenticated, remote attacker can exploit this to     free already freed memory and thereby crash the program.
    (CVE-2016-8618)

  - A double-free error exists in cURL in the read_data()     function within file lib/security.c when handling     Kerberos authentication. An unauthenticated, remote     attacker can exploit this to free already freed memory,     resulting in an unspecified impact on confidentiality,     integrity, and availability. (CVE-2016-8619)

  - An out-of-bounds access error exists in cURL in file     tool_urlglob.c within the globbing feature. An     unauthenticated, remote attacker can exploit this to     disclose memory contents or execute arbitrary code.
    (CVE-2016-8620)

  - An out-of-bounds error exists in cURL in the parsedate()     function within file lib/parsedate.c when handling     dates. An unauthenticated, remote attacker can exploit     this to disclose memory contents or cause a denial of     service condition. (CVE-2016-8621)

  - An integer truncation error exists in cURL in the     curl_easy_unescape() function within file lib/escape.c     when handling overly large URLs. An unauthenticated,     remote attacker can exploit this to cause a denial of     service condition or the execution of arbitrary code.
    (CVE-2016-8622)

  - A use-after-free error exists in cURL within file     lib/cookie.c when handling shared cookies. An     unauthenticated, remote attacker can exploit this to     disclose memory contents. (CVE-2016-8623)

  - A flaw exists in cURL in the parseurlandfillconn()     function within file lib/url.c when parsing the     authority component of a URL with the host name part     ending in a '#' character. An unauthenticated, remote     attacker can exploit this to establish a connection to     a different host than intended. (CVE-2016-8624)

  - A flaw exists in cURL within International Domain Names     (IDNA) handling when translating domain names to puny     code for DNS resolving due to using the outdated IDNA     2003 standard instead of the IDNA 2008 standard, which     can result in incorrect translation of a domain name.
    An unauthenticated, remote attacker can exploit this to     cause network traffic to be redirected to a different     host than intended. (CVE-2016-8625)

  - A flaw exists in Apache Tomcat within the     catalina/mbeans/JmxRemoteLifecycleListener.java class     that is triggered during the deserialization of Java     objects. An unauthenticated, remote attacker can exploit     this to execute arbitrary code. (CVE-2016-8735)

  - A flaw exists in the Web Server component (Apache HTTP     Server) when handling whitespace patterns in User-Agent     headers. An authenticated, remote attacker can exploit     this, via a specially crafted User-Agent header, to     cause incorrect processing of sequences of requests,     resulting in incorrectly interpreting responses,     polluting the cache, or disclosing content from one     request to a second downstream user-agent.
    (CVE-2016-8743)

  - A NULL pointer dereference flaw exists within file     ssl/statem/statem_clnt.c when handling parameters for     the DHE or ECDHE key exchanges. An unauthenticated,     remote attacker can exploit this, via specially crafted     parameters, to cause a denial of service condition.
    (CVE-2017-3730)

  - A out-of-bounds read error exists exists in the Core     subcomponent, specifically in OpenSSL, when handling     packets using the CHACHA20/POLY1305 or RC4-MD5 ciphers.
    An unauthenticated, remote attacker can exploit this,     via specially crafted truncated packets, to cause a     denial of service condition. (CVE-2017-3731)

  - A carry propagating error exists in the x86_64     Montgomery squaring implementation that may cause the     BN_mod_exp() function to produce incorrect results. An     unauthenticated, remote attacker with sufficient     resources can exploit this to obtain sensitive     information regarding private keys. Note that this issue     is very similar to CVE-2015-3193. Moreover, the attacker     would additionally need online access to an unpatched     system using the target private key in a scenario with     persistent DH parameters and a private key that is     shared between multiple clients. For example, this can     occur by default in OpenSSL DHE based SSL/TLS cipher     suites. (CVE-2017-3732)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Solaris system is missing necessary patches to address security updates :

  - Integer overflow in X.org libXfixes 5.0 and earlier     allows X servers to trigger allocation of insufficient     memory and a buffer overflow via vectors related to the     XFixesGetCursorImage function. (CVE-2013-1983)

  - Multiple integer overflows in X.org libXrandr 1.4.0 and     earlier allow X servers to trigger allocation of     insufficient memory and a buffer overflow via vectors     related to the (1) XRRQueryOutputProperty and (2)     XRRQueryProviderProperty functions. (CVE-2013-1986)

  - Multiple integer overflows in X.org libXrender 0.9.7 and     earlier allow X servers to trigger allocation of     insufficient memory and a buffer overflow via vectors     related to the (1) XRenderQueryFilters, (2)     XRenderQueryFormats, and (3) XRenderQueryPictIndexValues     functions. (CVE-2013-1987)

  - Multiple integer overflows in X.org libXRes 1.0.6 and     earlier allow X servers to trigger allocation of     insufficient memory and a buffer overflow via vectors     related to the (1) XResQueryClients and (2)     XResQueryClientResources functions. (CVE-2013-1988)

  - Multiple integer overflows in X.org libXv 1.0.7 and     earlier allow X servers to trigger allocation of     insufficient memory and a buffer overflow via vectors     related to the (1) XvQueryPortAttributes, (2)     XvListImageFormats, and (3) XvCreateImage function.
    (CVE-2013-1989)

  - Multiple integer overflows in X.org libXvMC 1.0.7 and     earlier allow X servers to trigger allocation of     insufficient memory and a buffer overflow via vectors     related to the (1) XvMCListSurfaceTypes and (2)     XvMCListSubpictureTypes functions. (CVE-2013-1990)

  - Multiple integer overflows in X.org libdmx 1.1.2 and     earlier allow X servers to trigger allocation of     insufficient memory and a buffer overflow via vectors     related to the (1) DMXGetScreenAttributes, (2)     DMXGetWindowAttributes, and (3) DMXGetInputAttributes     functions. (CVE-2013-1992)

  - Multiple integer overflows in X.org libGLX in Mesa 9.1.1     and earlier allow X servers to trigger allocation of     insufficient memory and a buffer overflow via vectors     related to the (1) XF86DRIOpenConnection and (2)     XF86DRIGetClientDriverName functions. (CVE-2013-1993)

  - Buffer overflow in X.org libXvMC 1.0.7 and earlier     allows X servers to cause a denial of service (crash)     and possibly execute arbitrary code via crafted length     or index values to the XvMCGetDRInfo function.
    (CVE-2013-1999)

  - Multiple buffer overflows in X.org libXxf86dga 1.1.3 and     earlier allow X servers to cause a denial of service     (crash) and possibly execute arbitrary code via crafted     length or index values to the (1) XDGAQueryModes and (2)     XDGASetMode functions. (CVE-2013-2000)

  - Buffer overflow in X.org libXxf86vm 1.1.2 and earlier     allows X servers to cause a denial of service (crash)     and possibly execute arbitrary code via crafted length     or index values to the XF86VidModeGetGammaRamp function.
    (CVE-2013-2001)

  - Integer overflow in X.org libXcursor 1.1.13 and earlier     allows X servers to trigger allocation of insufficient     memory and a buffer overflow via vectors related to the
    _XcursorFileHeaderCreate function. (CVE-2013-2003)

  - Integer overflow in X.org libXtst 1.2.1 and earlier     allows X servers to trigger allocation of insufficient     memory and a buffer overflow via vectors related to the     XRecordGetContext function. (CVE-2013-2063)

  - Integer overflow in X.org libxcb 1.9 and earlier allows     X servers to trigger allocation of insufficient memory     and a buffer overflow via vectors related to the     read_packet function. (CVE-2013-2064)

  - Buffer overflow in X.org libXv 1.0.7 and earlier allows     X servers to cause a denial of service (crash) and     possibly execute arbitrary code via crafted length or     index values to the XvQueryPortAttributes function.
    (CVE-2013-2066)

Multiple integer overflow flaws, leading to heap-based buffer overflows, were found in the way various X11 client libraries handled certain protocol data. An attacker able to submit invalid protocol data to an X11 server via a malicious X11 client could use either of these flaws to potentially escalate their privileges on the system.
(CVE-2013-1981 , CVE-2013-1982 , CVE-2013-1983 , CVE-2013-1984 , CVE-2013-1985 , CVE-2013-1986 , CVE-2013-1987 , CVE-2013-1988 , CVE-2013-1989 , CVE-2013-1990 , CVE-2013-1991 , CVE-2013-2003 , CVE-2013-2062 , CVE-2013-2064)

Multiple array index errors, leading to heap-based buffer out-of-bounds write flaws, were found in the way various X11 client libraries handled data returned from an X11 server. A malicious X11 server could possibly use this flaw to execute arbitrary code with the privileges of the user running an X11 client. (CVE-2013-1997 , CVE-2013-1998 , CVE-2013-1999 , CVE-2013-2000 , CVE-2013-2001 , CVE-2013-2002 , CVE-2013-2066)

A buffer overflow flaw was found in the way the XListInputDevices() function of X.Org X11's libXi runtime library handled signed numbers.
A malicious X11 server could possibly use this flaw to execute arbitrary code with the privileges of the user running an X11 client.
(CVE-2013-1995)

A flaw was found in the way the X.Org X11 libXt runtime library used uninitialized pointers. A malicious X11 server could possibly use this flaw to execute arbitrary code with the privileges of the user running an X11 client. (CVE-2013-2005)

Two stack-based buffer overflow flaws were found in the way libX11, the Core X11 protocol client library, processed certain user-specified files. A malicious X11 server could possibly use this flaw to crash an X11 client via a specially crafted file. (CVE-2013-2004)

Updated X11 client libraries packages that fix multiple security issues, several bugs, and add various enhancements are now available for Red Hat Enterprise Linux 6.

Red Hat Product Security has rated this update as having Moderate security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section.

The X11 (Xorg) libraries provide library routines that are used within all X Window applications.

Multiple integer overflow flaws, leading to heap-based buffer overflows, were found in the way various X11 client libraries handled certain protocol data. An attacker able to submit invalid protocol data to an X11 server via a malicious X11 client could use either of these flaws to potentially escalate their privileges on the system.
(CVE-2013-1981, CVE-2013-1982, CVE-2013-1983, CVE-2013-1984, CVE-2013-1985, CVE-2013-1986, CVE-2013-1987, CVE-2013-1988, CVE-2013-1989, CVE-2013-1990, CVE-2013-1991, CVE-2013-2003, CVE-2013-2062, CVE-2013-2064)

Multiple array index errors, leading to heap-based buffer out-of-bounds write flaws, were found in the way various X11 client libraries handled data returned from an X11 server. A malicious X11 server could possibly use this flaw to execute arbitrary code with the privileges of the user running an X11 client. (CVE-2013-1997, CVE-2013-1998, CVE-2013-1999, CVE-2013-2000, CVE-2013-2001, CVE-2013-2002, CVE-2013-2066)

A buffer overflow flaw was found in the way the XListInputDevices() function of X.Org X11's libXi runtime library handled signed numbers.
A malicious X11 server could possibly use this flaw to execute arbitrary code with the privileges of the user running an X11 client.
(CVE-2013-1995)

A flaw was found in the way the X.Org X11 libXt runtime library used uninitialized pointers. A malicious X11 server could possibly use this flaw to execute arbitrary code with the privileges of the user running an X11 client. (CVE-2013-2005)

Two stack-based buffer overflow flaws were found in the way libX11, the Core X11 protocol client library, processed certain user-specified files. A malicious X11 server could possibly use this flaw to crash an X11 client via a specially crafted file. (CVE-2013-2004)

The xkeyboard-config package has been upgraded to upstream version 2.11, which provides a number of bug fixes and enhancements over the previous version. (BZ#1077471)

This update also fixes the following bugs :

* Previously, updating the mesa-libGL package did not update the libX11 package, although it was listed as a dependency of mesa-libGL.
This bug has been fixed and updating mesa-libGL now updates all dependent packages as expected. (BZ#1054614)

* Previously, closing a customer application could occasionally cause the X Server to terminate unexpectedly. After this update, the X Server no longer hangs when a user closes a customer application.
(BZ#971626)

All X11 client libraries users are advised to upgrade to these updated packages, which correct these issues and add these enhancements.

Multiple integer overflow flaws, leading to heap-based buffer overflows, were found in the way various X11 client libraries handled certain protocol data. An attacker able to submit invalid protocol data to an X11 server via a malicious X11 client could use either of these flaws to potentially escalate their privileges on the system.
(CVE-2013-1981, CVE-2013-1982, CVE-2013-1983, CVE-2013-1984, CVE-2013-1985, CVE-2013-1986, CVE-2013-1987, CVE-2013-1988, CVE-2013-1989, CVE-2013-1990, CVE-2013-1991, CVE-2013-2003, CVE-2013-2062, CVE-2013-2064)

Multiple array index errors, leading to heap-based buffer out-of-bounds write flaws, were found in the way various X11 client libraries handled data returned from an X11 server. A malicious X11 server could possibly use this flaw to execute arbitrary code with the privileges of the user running an X11 client. (CVE-2013-1997, CVE-2013-1998, CVE-2013-1999, CVE-2013-2000, CVE-2013-2001, CVE-2013-2002, CVE-2013-2066)

A buffer overflow flaw was found in the way the XListInputDevices() function of X.Org X11's libXi runtime library handled signed numbers.
A malicious X11 server could possibly use this flaw to execute arbitrary code with the privileges of the user running an X11 client.
(CVE-2013-1995)

A flaw was found in the way the X.Org X11 libXt runtime library used uninitialized pointers. A malicious X11 server could possibly use this flaw to execute arbitrary code with the privileges of the user running an X11 client. (CVE-2013-2005)

Two stack-based buffer overflow flaws were found in the way libX11, the Core X11 protocol client library, processed certain user-specified files. A malicious X11 server could possibly use this flaw to crash an X11 client via a specially crafted file. (CVE-2013-2004)

The xkeyboard-config package has been upgraded to upstream version 2.11, which provides a number of bug fixes and enhancements over the previous version.

This update also fixes the following bugs :

  - Previously, updating the mesa-libGL package did not     update the libX11 package, although it was listed as a     dependency of mesa-libGL. This bug has been fixed and     updating mesa-libGL now updates all dependent packages     as expected.

  - Previously, closing a customer application could     occasionally cause the X Server to terminate     unexpectedly. After this update, the X Server no longer     hangs when a user closes a customer application.

This update of libXcursor fixes an integer overflow issue.

  -     U_0001-signedness-bug-integer-overflow-in-_XcursorFileHe     ade.patch

  - signedness bug & integer overflow in
    _XcursorFileHeaderCreate() [CVE-2013-2003] (bnc#821663,     bnc#815451)

The remote host is affected by the vulnerability described in GLSA-201405-07 (X.Org X Server: Multiple vulnerabilities)

    Multiple vulnerabilities have been discovered in X.Org X Server. Please       review the CVE identifiers referenced below for details.
  Impact :

    A context-dependent attacker could execute arbitrary code with the       privileges of the process, cause a Denial of Service condition, or obtain       sensitive information.
  Workaround :

    There is no known workaround at this time.

This update of xorg-x11-libs fixes several integer and buffer overflow issues.

Bug 815451/821663

CVE-2013-1984 / CVE-2013-1985 / CVE-2013-1986 / CVE-2013-1988 / CVE-2013-1990 / CVE-2013-1991 / CVE-2013-1992 / CVE-2013-1995 / CVE-2013-1996 / CVE-2013-1998 / CVE-2013-1999 / CVE-2013-2000 / CVE-2013-2001 / CVE-2013-2003 / CVE-2013-2063

This update of xorg-x11 fixes several security vulnerabilities.

  - Bug 815451- X.Org Security Advisory: May 23, 2013

  - Bug 821664 - libX11

  - Bug 821671 - libXv

  - Bug 821670 - libXt

  - Bug 821669 - libXrender

  - Bug 821668 - libXp

  - Bug 821667 - libXfixes

  - Bug 821665 - libXext

  - Bug 821663 - libFS, libXcursor, libXi, libXinerama,     libXRes, libXtst, libXvMC, libXxf86dga, libXxf86vm,     libdmx

This update of xorg-x11-libs fixes several integer and buffer overflow issues. (bnc#815451, bnc#821663)

Ilja van Sprundel discovered multiple security issues in various X.org libraries and components. An attacker could use these issues to cause applications to crash, resulting in a denial of service, or possibly execute arbitrary code.

Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

freedesktop.org reports :

Ilja van Sprundel, a security researcher with IOActive, has discovered a large number of issues in the way various X client libraries handle the responses they receive from servers, and has worked with X.Org's security team to analyze, confirm, and fix these issues.

Most of these issues stem from the client libraries trusting the server to send correct protocol data, and not verifying that the values will not overflow or cause other damage. Most of the time X clients & servers are run by the same user, with the server more privileged from the clients, so this is not a problem, but there are scenarios in which a privileged client can be connected to an unprivileged server, for instance, connecting a setuid X client (such as a screen lock program) to a virtual X server (such as Xvfb or Xephyr) which the user has modified to return invalid data, potentially allowing the user to escalate their privileges.

The vulnerabilities include :

Integer overflows calculating memory needs for replies.

Sign extension issues calculating memory needs for replies.

Buffer overflows due to not validating length or offset values in replies.

Integer overflows parsing user-specified files.

Unbounded recursion parsing user-specified files.

Memory corruption due to unchecked return values.

Update to latest git to fix the following CVEs: CVE-2013-2003

Note that Tenable Network Security has extracted the preceding description block directly from the Fedora security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Ilja van Sprundel of IOActive discovered several security issues in multiple components of the X.org graphics stack and the related libraries: Various integer overflows, sign handling errors in integer conversions, buffer overflows, memory corruption and missing input sanitising may lead to privilege escalation or denial of service.

ID	Name	Product	Family	Severity
199775	RHEL 5 : libxcursor (Unpatched Vulnerability)	Nessus	Red Hat Local Security Checks	critical
150105	FreeBSD : wayland -- integer overflow (fd24a530-c202-11eb-b217-b42e99639323)	Nessus	FreeBSD Local Security Checks	high
99930	Oracle Secure Global Desktop Multiple Vulnerabilities (April 2017 CPU) (SWEET32)	Nessus	Misc.	critical
80819	Oracle Solaris Third-Party Patch Update : xorg (multiple_vulnerabilities_in_x_org)	Nessus	Solaris Local Security Checks	medium
79560	Amazon Linux AMI : libX11 / libXcursor,libXfixes,libXi,libXrandr,libXrender,libXres,libXt,libXv,libXvMC,libXxf86dga,libXxf86vm,libdmx,xorg-x11-proto-devel (ALAS-2014-452)	Nessus	Amazon Linux Local Security Checks	medium
79182	CentOS 6 : libX11 / libXcursor / libXext / libXfixes / libXi / libXinerama / libXp / libXrandr / etc (CESA-2014:1436)	Nessus	CentOS Local Security Checks	medium
78841	Scientific Linux Security Update : X11 client libraries on SL6.x i386/x86_64 (20141014)	Nessus	Scientific Linux Local Security Checks	medium
78411	RHEL 6 : X11 client libraries (RHSA-2014:1436)	Nessus	Red Hat Local Security Checks	medium
75038	openSUSE Security Update : libXcursor (openSUSE-SU-2013:1031-1)	Nessus	SuSE Local Security Checks	medium
74028	GLSA-201405-07 : X.Org X Server: Multiple vulnerabilities	Nessus	Gentoo Local Security Checks	medium
69112	SuSE 11.3 Security Update : xorg-x11-libs (SAT Patch Number 7944)	Nessus	SuSE Local Security Checks	medium
67256	SuSE 10 Security Update : xorg-x11 (ZYPP Patch Number 8623)	Nessus	SuSE Local Security Checks	medium
67106	SuSE 11.2 Security Update : xorg-x11-libs (SAT Patch Number 7846)	Nessus	SuSE Local Security Checks	medium
66820	Ubuntu 12.04 LTS / 12.10 / 13.04 : libxcursor vulnerability (USN-1856-1)	Nessus	Ubuntu Local Security Checks	medium
66798	FreeBSD : xorg -- protocol handling issues in X Window System client libraries (2eebebff-cd3b-11e2-8f09-001b38c3836c)	Nessus	FreeBSD Local Security Checks	medium
66748	Fedora 18 : libXcursor-1.1.13-5.20130524git8f677eaea.fc18 (2013-9135)	Nessus	Fedora Local Security Checks	medium
66611	Fedora 19 : libXcursor-1.1.13-5.20130524git8f677eaea.fc19 (2013-9096)	Nessus	Fedora Local Security Checks	medium
66565	Debian DSA-2681-1 : libxcursor - several vulnerabilities	Nessus	Debian Local Security Checks	medium

Detections

Analytics

CVE-2013-2003

high

Tenable Plugins

critical

high

critical

medium

medium

medium

medium

medium

medium

medium

medium

medium

medium

medium

medium

medium

medium

medium