The sigalgs implementation in t1_lib.c in OpenSSL 1.0.2 before 1.0.2a allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) by using an invalid signature_algorithms extension in the ClientHello message during a renegotiation.

According to the web server's banner, the version of HP System Management Homepage (SMH) hosted on the remote web server is prior to 7.2.6. It is, therefore, affected by multiple vulnerabilities, including remote code execution vulnerabilities, in several components and third-party libraries :

  - HP SMH (XSRF)
    - libcurl
    - OpenSSL

According to the web server's banner, the version of HP System Management Homepage (SMH) hosted on the remote web server is prior to 7.5.0. It is, therefore, affected by multiple vulnerabilities :

  - A flaw exists within the 'mod_deflate' module when     handling highly compressed bodies. A remote attacker can     exploit this, via a specially crafted request, to     exhaust memory and CPU resources, resulting in a denial     of service condition. (CVE-2014-0118)

  - The 'mod_status' module contains a race condition that     can be triggered when handling the scoreboard. A remote     attacker can exploit this to cause a denial of service,     execute arbitrary code, or obtain sensitive credential     information. (CVE-2014-0226)

  - The 'mod_cgid' module lacks a time out mechanism. A     remote attacker can exploit this, via a specially     crafted request, to cause child processes to linger     indefinitely, filling up the scoreboard and resulting in     a denial of service vulnerability. (CVE-2014-0231)

  - A flaw exists in WinNT MPM versions 2.4.1 to 2.4.9 when     using the default AcceptFilter. An attacker can exploit     this, via specially crafted requests. to create a memory     leak, resulting in a denial of service condition.
    (CVE-2014-3523)

  - A NULL pointer dereference flaw exists when the SSLv3     option isn't enabled and an SSLv3 ClientHello is     received. This allows a remote attacker, using an     unexpected handshake, to crash the daemon, resulting in     a denial of service. (CVE-2014-3569)

  - The BIGNUM squaring (BN_sqr) implementation does not     properly calculate the square of a BIGNUM value. This     allows remote attackers to defeat cryptographic     protection mechanisms. (CVE-2014-3570)

  - A NULL pointer dereference flaw exists in the     dtls1_get_record() function when handling DTLS messages.
    A remote attacker, using a specially crafted DTLS     message, can cause a denial of service. (CVE-2014-3571)

  - A flaw exists with ECDH handshakes when using an ECDSA     certificate without a ServerKeyExchange message. This     allows a remote attacker to trigger a loss of forward     secrecy from the ciphersuite. (CVE-2014-3572)

  - A use-after-free error exists in the     'process_nested_data' function within     'ext/standard/var_unserializer.re' due to improper     handling of duplicate keys within the serialized     properties of an object. A remote attacker, using a     specially crafted call to the 'unserialize' method, can     exploit this flaw to execute arbitrary code on the     system. (CVE-2014-8142)

  - A flaw exists when accepting non-DER variations of     certificate signature algorithms and signature encodings     due to a lack of enforcement of matches between signed     and unsigned portions. A remote attacker, by including     crafted data within a certificate's unsigned portion,     can bypass fingerprint-based certificate-blacklist     protection mechanisms. (CVE-2014-8275)

  - An out-of-bounds read flaw in file 'cgi_main.c' exists     when nmap is used to process an invalid file that begins     with a hash character (#) but lacks a newline character.
    A remote attacker, using a specially crafted PHP file,     can exploit this vulnerability to disclose memory     contents, cause a denial of service, or possibly execute     code. (CVE-2014-9427)

  - An out-of-bounds read error exists in the Fine Free File     component that is bundled with PHP. A remote attacker     can exploit this to cause a denial of service condition     or the disclosure of sensitive information.
    (CVE-2014-9652)

  - A memory corruption issue exists in the Fine Free File     component that is bundled with PHP. A remote attacker     can exploit this to cause an unspecified impact.
    (CVE-2014-9653)

  - A heap buffer overflow condition exists in PHP in the     enchant_broker_request_dict() function due to improper     validation of user-supplied input. An attacker can     exploit this to cause a denial of service condition or     the execution of arbitrary code. (CVE-2014-9705)

  - A security feature bypass vulnerability, known as FREAK     (Factoring attack on RSA-EXPORT Keys), exists due to the     support of weak EXPORT_RSA cipher suites with keys less     than or equal to 512 bits. A man-in-the-middle attacker     may be able to downgrade the SSL/TLS connection to use     EXPORT_RSA cipher suites which can be factored in a     short amount of time, allowing the attacker to intercept     and decrypt the traffic. (CVE-2015-0204)

  - A flaw exists when accepting DH certificates for client     authentication without the CertificateVerify message.
    This allows a remote attacker to authenticate to the     service without a private key. (CVE-2015-0205)

  - A memory leak occurs in dtls1_buffer_record()     when handling a saturation of DTLS records containing     the same number sequence but for the next epoch. This     allows a remote attacker to cause a denial of service.
    (CVE-2015-0206)

  - A flaw exists in the DTLSv1_listen() function due to     state being preserved in the SSL object from one     invocation to the next. A remote attacker can exploit     this, via crafted DTLS traffic, to cause a segmentation     fault, resulting in a denial of service.
    (CVE-2015-0207)

  - A flaw exists in the rsa_item_verify() function due to     improper implementation of ASN.1 signature verification.
    A remote attacker can exploit this, via an ASN.1     signature using the RSA PSS algorithm and invalid     parameters, to cause a NULL pointer dereference,     resulting in a denial of service. (CVE-2015-0208)

  - A use-after-free condition exists in the     d2i_ECPrivateKey() function due to improper processing     of malformed EC private key files during import. A     remote attacker can exploit this to dereference or free     already freed memory, resulting in a denial of service     or other unspecified impact. (CVE-2015-0209)

  - A use-after-free memory error exists in the     process_nested_data() function in 'var_unserializer.re'     due to improper handling of duplicate numerical keys     within the serialized properties of an object. A remote     attacker, using a crafted unserialize method call, can     exploit this vulnerability to execute arbitrary code.
    (CVE-2015-0231)

  - A flaw exists in the exif_process_unicode() function in     'exif.c' that allows freeing an uninitialized pointer. A     remote attacker, using specially crafted EXIF data in a     JPEG image, can exploit this to cause a denial of     service or to execute arbitrary code. (CVE-2015-0232)

  - A use-after-free flaw exists in the function     php_date_timezone_initialize_from_hash() within the     'ext/date/php_date.c' script. An attacker can exploit     this to access sensitive information or crash     applications linked to PHP. (CVE-2015-0273)

  - A flaw exists in the ssl3_client_hello() function due to     improper validation of a PRNG seed before proceeding     with a handshake, resulting in insufficient entropy and     predictable output. This allows a man-in-the-middle     attacker to defeat cryptographic protection mechanisms     via a brute-force attack, resulting in the disclosure of     sensitive information. (CVE-2015-0285)

  - An invalid read error exists in the ASN1_TYPE_cmp()     function due to improperly performed boolean-type     comparisons. A remote attacker can exploit this, via a     crafted X.509 certificate to an endpoint that uses the     certificate-verification feature, to cause an invalid     read operation, resulting in a denial of service.
    (CVE-2015-0286)

  - A flaw exists in the ASN1_item_ex_d2i() function due to     a failure to reinitialize 'CHOICE' and 'ADB' data     structures when reusing a structure in ASN.1 parsing.
    This allows a remote attacker to cause an invalid write     operation and memory corruption, resulting in a denial     of service. (CVE-2015-0287)

  - A NULL pointer dereference flaw exists in the     X509_to_X509_REQ() function due to improper processing     of certificate keys. This allows a remote attacker, via     a crafted X.509 certificate, to cause a denial of     service. (CVE-2015-0288)

  - A NULL pointer dereference flaw exists in the PKCS#7     parsing code due to incorrect handling of missing outer     ContentInfo. This allows a remote attacker, using an     application that processes arbitrary PKCS#7 data and     providing malformed data with ASN.1 encoding, to cause     a denial of service. (CVE-2015-0289)

  - A flaw exists with the 'multiblock' feature in the     ssl3_write_bytes() function due to improper handling of     certain non-blocking I/O cases. This allows a remote     attacker to cause failed connections or a segmentation     fault, resulting in a denial of service. (CVE-2015-0290)

  - A NULL pointer dereference flaw exists when handling     clients attempting to renegotiate using an invalid     signature algorithm extension. A remote attacker can     exploit this to cause a denial of service.
    (CVE-2015-0291)

  - An integer underflow condition exists in the     EVP_DecodeUpdate() function due to improper validation     of base64 encoded input when decoding. This allows a     remote attacker, using maliciously crafted base64 data,     to cause a segmentation fault or memory corruption,     resulting in a denial of service or possibly the     execution of arbitrary code. (CVE-2015-0292)

  - A flaw exists in servers that both support SSLv2 and     enable export cipher suites due to improper     implementation of SSLv2. A remote attacker can exploit     this, via a crafted CLIENT-MASTER-KEY message, to cause     a denial of service. (CVE-2015-0293)

  - A flaw exists in the ssl3_get_client_key_exchange()     function when client authentication and an ephemeral     Diffie-Hellman ciphersuite are enabled. This allows a     remote attacker, via a ClientKeyExchange message with a     length of zero, to cause a denial of service.
    (CVE-2015-1787)

  - A cross-site request forgery (XSRF) vulnerability exists     due to the lack of a unique token when performing     sensitive actions via HTTP requests. (CVE-2015-2134)

  - A use-after-free error exists in the function     phar_rename_archive() in file 'phar_object.c'. A remote     attacker, by attempting to rename a phar archive to an     already existing file name, can exploit this to cause     a denial of service. (CVE-2015-2301)

  - A use-after-free error exists related to function     'unserialize', which can allow a remote attacker to     execute arbitrary code. Note that this issue is due to     an incomplete fix for CVE-2014-8142. (CVE-2015-0231)

  - A filter bypass vulnerability exists due to a flaw in     the move_uploaded_file() function in which pathnames are     truncated when a NULL byte is encountered. This allows a     remote attacker, via a crafted second argument, to     bypass intended extension restrictions and create files     with unexpected names. (CVE-2015-2348)

  - A user-after-free error exists in the     process_nested_data() function. This allows a remote     attacker, via a crafted unserialize call, to dereference     already freed memory, resulting in the execution of     arbitrary code. (CVE-2015-2787)

According to its version number, the Splunk Enterprise hosted on the remote web server is 5.0.x prior to 5.0.13, 6.0.x prior to 6.0.9, or 6.1.x prior to 6.1.4. It is, therefore, affected by the following vulnerabilities related to the included OpenSSL library :

  - A security feature bypass vulnerability, known as FREAK     (Factoring attack on RSA-EXPORT Keys), exists due to the     support of weak EXPORT_RSA cipher suites with keys less     than or equal to 512 bits. A man-in-the-middle attacker     may be able to downgrade the SSL/TLS connection to use     EXPORT_RSA cipher suites which can be factored in a     short amount of time, allowing the attacker to intercept     and decrypt the traffic. (CVE-2015-0204)

  - A flaw exists in the DTLSv1_listen() function due to     state being preserved in the SSL object from one     invocation to the next. A remote attacker can exploit     this, via crafted DTLS traffic, to cause a segmentation     fault, resulting in a denial of service.
    (CVE-2015-0207)

  - A flaw exists in the rsa_item_verify() function due to     improper implementation of ASN.1 signature verification.
    A remote attacker can exploit this, via an ASN.1     signature using the RSA PSS algorithm and invalid     parameters, to cause a NULL pointer dereference,     resulting in a denial of service. (CVE-2015-0208)

  - A use-after-free condition exists in the     d2i_ECPrivateKey() function due to improper processing     of malformed EC private key files during import. A     remote attacker can exploit this to dereference or free     already freed memory, resulting in a denial of service     or other unspecified impact. (CVE-2015-0209)

  - A flaw exists in the ssl3_client_hello() function due to     improper validation of a PRNG seed before proceeding     with a handshake, resulting in insufficient entropy and     predictable output. This allows a man-in-the-middle     attacker to defeat cryptographic protection mechanisms     via a brute-force attack, resulting in the disclosure of     sensitive information. (CVE-2015-0285)

  - An invalid read flaw exists in the ASN1_TYPE_cmp()     function due to improperly performed boolean-type     comparisons. A remote attacker can exploit this, via a     crafted X.509 certificate to an endpoint that uses the     certificate-verification feature, to cause an invalid     read operation, resulting in a denial of service.
    (CVE-2015-0286)

  - A flaw exists in the ASN1_item_ex_d2i() function due to     a failure to reinitialize 'CHOICE' and 'ADB' data     structures when reusing a structure in ASN.1 parsing.
    This allows a remote attacker to cause an invalid write     operation and memory corruption, resulting in a denial     of service. (CVE-2015-0287)

  - A NULL pointer dereference flaw exists in the     X509_to_X509_REQ() function due to improper processing     of certificate keys. This allows a remote attacker, via     a crafted X.509 certificate, to cause a denial of     service. (CVE-2015-0288)

  - A NULL pointer dereference flaw exists in the PKCS#7     parsing code due to incorrect handling of missing outer     ContentInfo. This allows a remote attacker, using an     application that processes arbitrary PKCS#7 data and     providing malformed data with ASN.1 encoding, to cause     a denial of service. (CVE-2015-0289)

  - A flaw exists with the 'multiblock' feature in the     ssl3_write_bytes() function due to improper handling of     certain non-blocking I/O cases. This allows a remote     attacker to cause failed connections or a segmentation     fault, resulting in a denial of service. (CVE-2015-0290)

  - A NULL pointer dereference flaw exists when handling     clients attempting to renegotiate using an invalid     signature algorithm extension. A remote attacker can     exploit this to cause a denial of service.
    (CVE-2015-0291)

  - An integer underflow condition exists in the     EVP_DecodeUpdate() function due to improper validation     of base64 encoded input when decoding. This allows a     remote attacker, using maliciously crafted base64 data,     to cause a segmentation fault or memory corruption,     resulting in a denial of service or possibly the     execution of arbitrary code. (CVE-2015-0292)

  - A flaw exists in servers that both support SSLv2 and     enable export cipher suites due to improper     implementation of SSLv2. A remote attacker can exploit     this, via a crafted CLIENT-MASTER-KEY message, to cause     a denial of service. (CVE-2015-0293)

  - A flaw exists in the ssl3_get_client_key_exchange()     function when client authentication and an ephemeral     Diffie-Hellman ciphersuite are enabled. This allows a     remote attacker, via a ClientKeyExchange message with a     length of zero, to cause a denial of service.
    (CVE-2015-1787)

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

OpenSSL 1.0.2 prior to 1.0.2a are unpatched for the following vulnerabilities:

  - A flaw exists in the 'DTLSv1_listen()' function due to the state being preserved in the SSL object from one invocation to the next. A remote attacker can exploit this, via crafted DTLS traffic, to cause a segmentation fault, resulting in a denial of service. (CVE-2015-0207)

  - A flaw exists in the 'rsa_item_verify()' function due to improper implementation of ASN.1 signature verification. A remote attacker can exploit this, via an ASN.1 signature using the RSA PSS algorithm and invalid parameters, to cause a NULL pointer dereference, resulting in a denial of service. (CVE-2015-0208)

  - A use-after-free condition exists in the 'd2i_ECPrivateKey() function due to improper processing of malformed EC private key files during import. A remote attacker can exploit this to dereference or free already freed memory, resulting in a denial of service or other unspecified impact. (CVE-2015-0209)

  - A flaw exists in the 'ssl3_client_hello()' function due to improper validation of a PRNG seed before proceeding with a handshake, resulting in insufficient entropy and predictable output. This allows a man-in-the-middle attacker to defeat cryptographic protection mechanisms via a brute-force attack, resulting in the disclosure of sensitive information. (CVE-2015-0285)

  - An invalid read flaw exists in the 'ASN1_TYPE_cmp()' function due to improperly performed boolean-type comparisons. A remote attacker can exploit this, via a crafted X.509 certificate to an endpoint that uses the certificate-verification feature, to cause an invalid read operation, resulting in a denial of service. (CVE-2015-0286)

  - A flaw exists in the 'ASN1_item_ex_d2i()' function due to a failure to reinitialize 'CHOICE' and 'ADB' data structures when reusing a structure in ASN.1 parsing. This allows a remote attacker to cause an invalid write operation and memory corruption, resulting in a denial of service. (CVE-2015-0287)

  - A NULL pointer dereference flaw exists in the 'X509_to_X509_REQ()' function due to improper processing of certificate keys. This allows a remote attacker, via a crafted X.509 certificate, to cause a denial of service. (CVE-2015-0288)

  - A NULL pointer dereference flaw exists in the PKCS#7 parsing code due to incorrect handling of missing outer 'ContentInfo'. This allows a remote attacker, using an application that processes arbitrary PKCS#7 data and providing malformed data with ASN.1 encoding, to cause a denial of service. (CVE-2015-0289)

  - A flaw exists with the 'multiblock' feature in the 'ssl3_write_bytes()' function due to improper handling of certain non-blocking I/O cases. This allows a remote attacker to cause failed connections or a segmentation fault, resulting in a denial of service. (CVE-2015-0290)

  - A NULL pointer dereference flaw exists when handling clients attempting to renegotiate using an invalid signature algorithm extension. A remote attacker can exploit this to cause a denial of service. (CVE-2015-0291)

  - A flaw exists in servers that both support SSLv2 and enable export cipher suites due to improper implementation of SSLv2. A remote attacker can exploit this, via a crafted CLIENT-MASTER-KEY message, to cause a denial of service. (CVE-2015-0293)

  - A flaw exists in the 'ssl3_get_client_key_exchange()' function when client authentication and an ephemeral Diffie-Hellman ciphersuite are enabled. This allows a remote attacker, via a ClientKeyExchange message with a length of zero, to cause a denial of service. (CVE-2015-1787)

The version of stunnel installed on the remote host is prior to version 5.12. It is, therefore, affected by the following vulnerabilities in the bundled OpenSSL library :

  - A flaw exists in the DTLSv1_listen() function due to     state information being preserved in the SSL object from     one invocation to the next. A remote attacker can     exploit this, via crafted DTLS traffic, to cause a     segmentation fault, resulting in a denial of service.
    (CVE-2015-0207)

  - A flaw exists in the rsa_item_verify() function due to     improper implementation of ASN.1 signature verification.
    A remote attacker can exploit this, via an ASN.1     signature using the RSA PSS algorithm and invalid     parameters, to cause a NULL pointer dereference,     resulting in a denial of service. (CVE-2015-0208)

  - A use-after-free error exists in the d2i_ECPrivateKey()     function due to improper processing of malformed EC     private key files during import. A remote attacker can     exploit this to dereference already freed memory,     resulting in a denial of service or other unspecified     impact. (CVE-2015-0209)

  - A flaw exists in the ssl3_client_hello() function due to     improper validation of a PRNG seed before proceeding     with a handshake, resulting in insufficient entropy and     predictable output. A man-in-the-middle attacker can     exploit this to defeat cryptographic protection     mechanisms via a brute-force attack, resulting in the     disclosure of sensitive information. (CVE-2015-0285)

  - An invalid read flaw exists in the ASN1_TYPE_cmp()     function due to improperly performed boolean-type     comparisons. A remote attacker can exploit this, via a     crafted X.509 certificate to an endpoint that uses the     certificate-verification feature, to cause an invalid     read operation, resulting in a denial of service.
    (CVE-2015-0286)

  - A flaw exists in the ASN1_item_ex_d2i() function due to     a failure to reinitialize 'CHOICE' and 'ADB' data     structures when reusing a structure in ASN.1 parsing. A     remote attacker can exploit this to cause an invalid     write operation and memory corruption, resulting in a     denial of service. (CVE-2015-0287)

  - A NULL pointer dereference flaw exists in the     X509_to_X509_REQ() function due to improper processing     of certificate keys. This allows a remote attacker, via     a crafted X.509 certificate, to cause a denial of     service. (CVE-2015-0288)

  - A NULL pointer dereference flaw exists in the PKCS#7     parsing code due to incorrect handling of missing outer     ContentInfo. This allows a remote attacker, using an     application that processes arbitrary PKCS#7 data and     providing malformed data with ASN.1 encoding, to cause     a denial of service. (CVE-2015-0289)

  - A flaw exists with the 'multiblock' feature in the     ssl3_write_bytes() function due to improper handling of     certain non-blocking I/O cases. This allows a remote     attacker to cause failed connections or a segmentation     fault, resulting in a denial of service. (CVE-2015-0290)

  - A NULL pointer dereference flaw exists when handling     clients attempting to renegotiate using an invalid     signature algorithm extension. A remote attacker can     exploit this to cause a denial of service.
    (CVE-2015-0291)

  - A flaw exists in servers that both support SSLv2 and     enable export cipher suites due to improper     implementation of SSLv2. A remote attacker can exploit     this, via a crafted CLIENT-MASTER-KEY message, to cause     a denial of service. (CVE-2015-0293)

  - A flaw exists in the ssl3_get_client_key_exchange()     function when client authentication and an ephemeral     Diffie-Hellman ciphersuite are enabled. A remote     attacker can exploit this, via a ClientKeyExchange     message with a length of zero, to cause a denial of     service. (CVE-2015-1787)

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

The version of OpenSSL installed on the remote host is prior to 1.0.2a. It is, therefore, affected by multiple vulnerabilities as referenced in the 1.0.2a advisory.

  - An oracle protection mechanism in the get_client_master_key function in s2_srvr.c in the SSLv2     implementation in OpenSSL before 0.9.8zf, 1.0.0 before 1.0.0r, 1.0.1 before 1.0.1m, and 1.0.2 before     1.0.2a overwrites incorrect MASTER-KEY bytes during use of export cipher suites, which makes it easier for     remote attackers to decrypt TLS ciphertext data by leveraging a Bleichenbacher RSA padding oracle, a     related issue to CVE-2016-0800. (CVE-2016-0704)

  - The get_client_master_key function in s2_srvr.c in the SSLv2 implementation in OpenSSL before 0.9.8zf,     1.0.0 before 1.0.0r, 1.0.1 before 1.0.1m, and 1.0.2 before 1.0.2a accepts a nonzero CLIENT-MASTER-KEY     CLEAR-KEY-LENGTH value for an arbitrary cipher, which allows man-in-the-middle attackers to determine the     MASTER-KEY value and decrypt TLS ciphertext data by leveraging a Bleichenbacher RSA padding oracle, a     related issue to CVE-2016-0800. (CVE-2016-0703)

  - The ssl3_get_client_key_exchange function in s3_srvr.c in OpenSSL 1.0.2 before 1.0.2a, when client     authentication and an ephemeral Diffie-Hellman ciphersuite are enabled, allows remote attackers to cause a     denial of service (daemon crash) via a ClientKeyExchange message with a length of zero. (CVE-2015-1787)

  - The SSLv2 implementation in OpenSSL before 0.9.8zf, 1.0.0 before 1.0.0r, 1.0.1 before 1.0.1m, and 1.0.2     before 1.0.2a allows remote attackers to cause a denial of service (s2_lib.c assertion failure and daemon     exit) via a crafted CLIENT-MASTER-KEY message. (CVE-2015-0293)

  - The sigalgs implementation in t1_lib.c in OpenSSL 1.0.2 before 1.0.2a allows remote attackers to cause a     denial of service (NULL pointer dereference and daemon crash) by using an invalid signature_algorithms     extension in the ClientHello message during a renegotiation. (CVE-2015-0291)

  - The multi-block feature in the ssl3_write_bytes function in s3_pkt.c in OpenSSL 1.0.2 before 1.0.2a on     64-bit x86 platforms with AES NI support does not properly handle certain non-blocking I/O cases, which     allows remote attackers to cause a denial of service (pointer corruption and application crash) via     unspecified vectors. (CVE-2015-0290)

  - The PKCS#7 implementation in OpenSSL before 0.9.8zf, 1.0.0 before 1.0.0r, 1.0.1 before 1.0.1m, and 1.0.2     before 1.0.2a does not properly handle a lack of outer ContentInfo, which allows attackers to cause a     denial of service (NULL pointer dereference and application crash) by leveraging an application that     processes arbitrary PKCS#7 data and providing malformed data with ASN.1 encoding, related to     crypto/pkcs7/pk7_doit.c and crypto/pkcs7/pk7_lib.c. (CVE-2015-0289)

  - The ASN1_item_ex_d2i function in crypto/asn1/tasn_dec.c in OpenSSL before 0.9.8zf, 1.0.0 before 1.0.0r,     1.0.1 before 1.0.1m, and 1.0.2 before 1.0.2a does not reinitialize CHOICE and ADB data structures, which     might allow attackers to cause a denial of service (invalid write operation and memory corruption) by     leveraging an application that relies on ASN.1 structure reuse. (CVE-2015-0287)

  - The ASN1_TYPE_cmp function in crypto/asn1/a_type.c in OpenSSL before 0.9.8zf, 1.0.0 before 1.0.0r, 1.0.1     before 1.0.1m, and 1.0.2 before 1.0.2a does not properly perform boolean-type comparisons, which allows     remote attackers to cause a denial of service (invalid read operation and application crash) via a crafted     X.509 certificate to an endpoint that uses the certificate-verification feature. (CVE-2015-0286)

  - Use-after-free vulnerability in the d2i_ECPrivateKey function in crypto/ec/ec_asn1.c in OpenSSL before     0.9.8zf, 1.0.0 before 1.0.0r, 1.0.1 before 1.0.1m, and 1.0.2 before 1.0.2a might allow remote attackers to     cause a denial of service (memory corruption and application crash) or possibly have unspecified other     impact via a malformed Elliptic Curve (EC) private-key file that is improperly handled during import.
    (CVE-2015-0209)

  - The ASN.1 signature-verification implementation in the rsa_item_verify function in crypto/rsa/rsa_ameth.c     in OpenSSL 1.0.2 before 1.0.2a allows remote attackers to cause a denial of service (NULL pointer     dereference and application crash) via crafted RSA PSS parameters to an endpoint that uses the     certificate-verification feature. (CVE-2015-0208)

  - The dtls1_listen function in d1_lib.c in OpenSSL 1.0.2 before 1.0.2a does not properly isolate the state     information of independent data streams, which allows remote attackers to cause a denial of service     (application crash) via crafted DTLS traffic, as demonstrated by DTLS 1.0 traffic to a DTLS 1.2 server.
    (CVE-2015-0207)

  - The ssl3_client_hello function in s3_clnt.c in OpenSSL 1.0.2 before 1.0.2a does not ensure that the PRNG     is seeded before proceeding with a handshake, which makes it easier for remote attackers to defeat     cryptographic protection mechanisms by sniffing the network and then conducting a brute-force attack.
    (CVE-2015-0285)

  - The X509_to_X509_REQ function in crypto/x509/x509_req.c in OpenSSL before 0.9.8zf, 1.0.0 before 1.0.0r,     1.0.1 before 1.0.1m, and 1.0.2 before 1.0.2a might allow attackers to cause a denial of service (NULL     pointer dereference and application crash) via an invalid certificate key. (CVE-2015-0288)

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

The remote host is affected by the vulnerability described in GLSA-201503-11 (OpenSSL: Multiple vulnerabilities)

    Multiple vulnerabilities have been found in OpenSSL. Please review the       CVE identifiers and the upstream advisory referenced below for details:
      RSA silently downgrades to EXPORT_RSA [Client] (Reclassified)         (CVE-2015-0204)       Segmentation fault in ASN1_TYPE_cmp (CVE-2015-0286)       ASN.1 structure reuse memory corruption (CVE-2015-0287)       X509_to_X509_REQ NULL pointer deref (CVE-2015-0288)       PKCS7 NULL pointer dereferences (CVE-2015-0289)       Base64 decode (CVE-2015-0292)       DoS via reachable assert in SSLv2 servers (CVE-2015-0293)       Use After Free following d2i_ECPrivatekey error (CVE-2015-0209)     The following issues affect OpenSSL 1.0.2 only which is not part of the       supported Gentoo stable tree:
      OpenSSL 1.0.2 ClientHello sigalgs DoS (CVE-2015-0291)       Multiblock corrupted pointer (CVE-2015-0290)       Segmentation fault in DTLSv1_listen (CVE-2015-0207)       Segmentation fault for invalid PSS parameters (CVE-2015-0208)       Empty CKE with client auth and DHE (CVE-2015-1787)       Handshake with unseeded PRNG (CVE-2015-0285)   Impact :

    A remote attacker can utilize multiple vectors to cause Denial of       Service or Information Disclosure.
  Workaround :

    There is no known workaround at this time.

Versions of OpenSSL 1.0.2 are potentially affected by the following vulnerabilities : 

  -  A flaw exists in the DTLSv1_listen() function due to due to state being preserved in the SSL object from one invocation to the next. A remote attacker can exploit this, via crafted DTLS traffic, to cause a segmentation fault, resulting in a denial of service. (CVE-2015-0207)
  
  - TA flaw exists in the rsa_item_verify() function due to improper implementation of ASN.1 signature verification.  A remote attacker can exploit this, via an ASN.1 signature using the RSA PSS algorithm and invalid parameters, to cause a NULL pointer dereference, resulting in a denial of service. (CVE-2015-0208)

  - A flaw exists in the ssl3_client_hello() function due to improper validation of a PRNG seed before proceeding with a handshake, resulting in insufficient entropy and predictable output. This allows a man-in-the-middle attacker to defeat cryptographic protection mechanisms via a brute-force attack, resulting in the disclosure of sensitive information. (CVE-2015-0285)

  - A flaw exists with the 'multiblock' feature in the ssl3_write_bytes() function due to improper handling of certain non-blocking I/O cases. This allows a remote attacker to cause failed connections or a segmentation fault, resulting in a denial of service. (CVE-2015-0290)

  - A NULL pointer dereference flaw exists when handling clients attempting to renegotiate using an invalid signature algorithm extension. A remote attacker can exploit this to cause a denial of service. (CVE-2015-0291)

  - A flaw exists in the ssl3_get_client_key_exchange() function when client authentication and an ephemeral Diffie-Hellman ciphersuite are enabled. This allows a remote attacker, via a ClientKeyExchange message with a length of zero, to cause a denial of service. (CVE-2015-1787)

ID	Name	Product	Family	Severity
90251	HP System Management Homepage < 7.2.6 Multiple Vulnerabilities (FREAK)	Nessus	Web Servers	high
84923	HP System Management Homepage 7.3.x / 7.4.x < 7.5.0 Multiple Vulnerabilities (FREAK)	Nessus	Web Servers	high
83992	Splunk Enterprise 5.0.x < 5.0.13 / 6.0.x < 6.0.9 / 6.1.x < 6.1.8 OpenSSL Vulnerabilities (FREAK)	Nessus	CGI abuses	high
8661	OpenSSL 1.0.2 < 1.0.2a Multiple Vulnerabilities	Nessus Network Monitor	Web Servers	medium
82077	stunnel < 5.12 OpenSSL Multiple Vulnerabilities	Nessus	Windows	medium
82033	OpenSSL 1.0.2 < 1.0.2a Multiple Vulnerabilities	Nessus	Web Servers	medium
82010	GLSA-201503-11 : OpenSSL: Multiple vulnerabilities (FREAK)	Nessus	Gentoo Local Security Checks	high
801935	OpenSSL < 1.0.2a Multiple Vulnerabilities	Log Correlation Engine	Web Servers	medium

Detections

Analytics

CVE-2015-0291

high

Tenable Plugins

high

high

high

medium

medium

medium

high

medium