The version of python-virtualenv installed on the remote host is prior to 15.1.0-4. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2-2020-1413 advisory.

    urllib3 before version 1.23 does not remove the Authorization HTTP header when following a cross-origin     redirect (i.e., a redirect that differs in host, port, or scheme). This can allow for credentials in the     Authorization header to be exposed to unintended hosts or transmitted in cleartext. (CVE-2018-20060)

    In the urllib3 library through 1.24.1 for Python, CRLF injection is possible if the attacker controls the     request parameter. (CVE-2019-11236)

    A credentials-exposure flaw was found in python-requests, where if a request with authentication is     redirected (302) from an HTTPS endpoint to an HTTP endpoint on the same host, the Authorization header is     not stripped and the credentials can be read in plain text. A man-in-the-middle attacker could exploit     this flaw to obtain a user's valid credentials. (CVE-2018-18074)

Tenable has extracted the preceding description block directly from the tested product security advisory.

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

The remote Redhat Enterprise Linux 7 host has a package installed that is affected by multiple vulnerabilities as referenced in the RHSA-2020:2081 advisory.

    The virtualenv tool creates isolated Python environments. The virtualenv tool is a successor to     workingenv, and an extension of virtual-python.

    Security Fix(es):

    * python-urllib3: Cross-host redirect does not remove Authorization header allow for credential exposure     (CVE-2018-20060)

    * python-urllib3: CRLF injection due to not encoding the '\r\n' sequence leading to possible attack on     internal service (CVE-2019-11236)

    * python-requests: Redirect from HTTPS to HTTP does not remove Authorization header (CVE-2018-18074)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

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

Security Fix(es) :

  - python-urllib3: Cross-host redirect does not remove     Authorization header allow for credential exposure     (CVE-2018-20060)

  - python-urllib3: CRLF injection due to not encoding the     '\r\n' sequence leading to possible attack on internal     service (CVE-2019-11236)

  - python-requests: Redirect from HTTPS to HTTP does not     remove Authorization header (CVE-2018-18074)

The remote NewStart CGSL host, running version CORE 5.05 / MAIN 5.05, has python-virtualenv packages installed that are affected by multiple vulnerabilities:

  - In the urllib3 library through 1.24.1 for Python, CRLF injection is possible if the attacker controls the     request parameter. (CVE-2019-11236)

  - urllib3 before version 1.23 does not remove the Authorization HTTP header when following a cross-origin     redirect (i.e., a redirect that differs in host, port, or scheme). This can allow for credentials in the     Authorization header to be exposed to unintended hosts or transmitted in cleartext. (CVE-2018-20060)

  - The Requests package before 2.20.0 for Python sends an HTTP Authorization header to an http URI upon     receiving a same-hostname https-to-http redirect, which makes it easier for remote attackers to discover     credentials by sniffing the network. (CVE-2018-18074)

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

The remote Debian 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the dla-3610 advisory.

    -------------------------------------------------------------------------     Debian LTS Advisory DLA-3610-1                debian-lts@lists.debian.org     https://www.debian.org/lts/security/                       Guilhem Moulin     October 08, 2023                              https://wiki.debian.org/LTS
    -------------------------------------------------------------------------

    Package        : python-urllib3     Version        : 1.24.1-1+deb10u1     CVE ID         : CVE-2019-11236 CVE-2019-11324 CVE-2020-26137 CVE-2023-43804     Debian Bug     : 927172 927412 1053626

    Security vulnerabilities were found in python-urllib3, an HTTP library     with thread-safe connection pooling for Python, which could lead to     information disclosure or authorization bypass.

    CVE-2019-11236

        Hanno Bck discovered that an attacker controlling the request         parameter can inject headers by injecting CR/LF chars.  The issue is         similar to CPython's CVE-2019-9740.

    CVE-2019-11324

        Christian Heimes discovered that when verifying HTTPS connections         upon passing an SSLContext to urllib3, system CA certificates are         loaded into the SSLContext by default in addition to any         manually-specified CA certificates.
        This causes TLS handshakes that should fail given only the manually         specified certs to succeed based on system CA certs.

    CVE-2020-26137

        It was discovered that CRLF injection was possible if the attacker         controls the HTTP request method, as demonstrated by inserting CR         and LF control characters in the first argument of putrequest().
        The issue is similar to urllib's CVE-2020-26116.

    CVE-2023-43804

        It was discovered that the Cookie request header isn't stripped         during cross-origin redirects.  It is therefore possible for a user         specifying a Cookie header to unknowingly leak information via HTTP         redirects to a different origin (unless the user disables redirects         explicitly).  The issue is similar to CVE-2018-20060, but for Cookie         request header rather than Authorization.

        Moreover authorization request headers were not removed         redirecting to cross-site.  Per RFC7230 sec. 3.2 header fields are         to be treated case-insensitively.

    For Debian 10 buster, these problems have been fixed in version     1.24.1-1+deb10u1.

    We recommend that you upgrade your python-urllib3 packages.

    For the detailed security status of python-urllib3 please refer to     its security tracker page at:
    https://security-tracker.debian.org/tracker/python-urllib3

    Further information about Debian LTS security advisories, how to apply     these updates to your system and frequently asked questions can be     found at: https://wiki.debian.org/LTS     Attachment:
    signature.asc     Description: PGP signature

Tenable has extracted the preceding description block directly from the Debian security advisory.

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

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - urllib3 before version 1.23 does not remove the Authorization HTTP header when following a cross-origin     redirect (i.e., a redirect that differs in host, port, or scheme). This can allow for credentials in the     Authorization header to be exposed to unintended hosts or transmitted in cleartext. (CVE-2018-20060)

Note that Nessus relies on the presence of the package as reported by the vendor.

The version of AOS installed on the remote host is prior to 5.16.1.3. It is, therefore, affected by multiple vulnerabilities as referenced in the NXSA-AOS-5.16.1.3 advisory.

  - When using the Apache JServ Protocol (AJP), care must be taken when trusting incoming connections to     Apache Tomcat. Tomcat treats AJP connections as having higher trust than, for example, a similar HTTP     connection. If such connections are available to an attacker, they can be exploited in ways that may be     surprising. In Apache Tomcat 9.0.0.M1 to 9.0.0.30, 8.5.0 to 8.5.50 and 7.0.0 to 7.0.99, Tomcat shipped     with an AJP Connector enabled by default that listened on all configured IP addresses. It was expected     (and recommended in the security guide) that this Connector would be disabled if not required. This     vulnerability report identified a mechanism that allowed: - returning arbitrary files from anywhere in the     web application - processing any file in the web application as a JSP Further, if the web application     allowed file upload and stored those files within the web application (or the attacker was able to control     the content of the web application by some other means) then this, along with the ability to process a     file as a JSP, made remote code execution possible. It is important to note that mitigation is only     required if an AJP port is accessible to untrusted users. Users wishing to take a defence-in-depth     approach and block the vector that permits returning arbitrary files and execution as JSP may upgrade to     Apache Tomcat 9.0.31, 8.5.51 or 7.0.100 or later. A number of changes were made to the default AJP     Connector configuration in 9.0.31 to harden the default configuration. It is likely that users upgrading     to 9.0.31, 8.5.51 or 7.0.100 or later will need to make small changes to their configurations.
    (CVE-2020-1938)

  - rtl_p2p_noa_ie in drivers/net/wireless/realtek/rtlwifi/ps.c in the Linux kernel through 5.3.6 lacks a     certain upper-bound check, leading to a buffer overflow. (CVE-2019-17666)

  - The Linux kernel before 5.1-rc5 allows page->_refcount reference count overflow, with resultant use-after-     free issues, if about 140 GiB of RAM exists. This is related to fs/fuse/dev.c, fs/pipe.c, fs/splice.c,     include/linux/mm.h, include/linux/pipe_fs_i.h, kernel/trace/trace.c, mm/gup.c, and mm/hugetlb.c. It can     occur with FUSE requests. (CVE-2019-11487)

  - A flaw was found in the fix for CVE-2019-11135, in the Linux upstream kernel versions before 5.5 where,     the way Intel CPUs handle speculative execution of instructions when a TSX Asynchronous Abort (TAA) error     occurs. When a guest is running on a host CPU affected by the TAA flaw (TAA_NO=0), but is not affected by     the MDS issue (MDS_NO=1), the guest was to clear the affected buffers by using a VERW instruction     mechanism. But when the MDS_NO=1 bit was exported to the guests, the guests did not use the VERW mechanism     to clear the affected buffers. This issue affects guests running on Cascade Lake CPUs and requires that     host has 'TSX' enabled. Confidentiality of data is the highest threat associated with this vulnerability.
    (CVE-2019-19338)

  - The Requests package before 2.20.0 for Python sends an HTTP Authorization header to an http URI upon     receiving a same-hostname https-to-http redirect, which makes it easier for remote attackers to discover     credentials by sniffing the network. (CVE-2018-18074)

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 AOS installed on the remote host is prior to 5.16. It is, therefore, affected by multiple vulnerabilities as referenced in the NXSA-AOS-5.16 advisory.

  - curl before version 7.61.1 is vulnerable to a buffer overrun in the NTLM authentication code. The internal     function Curl_ntlm_core_mk_nt_hash multiplies the length of the password by two (SUM) to figure out how     large temporary storage area to allocate from the heap. The length value is then subsequently used to     iterate over the password and generate output into the allocated storage buffer. On systems with a 32 bit     size_t, the math to calculate SUM triggers an integer overflow when the password length exceeds 2GB (2^31     bytes). This integer overflow usually causes a very small buffer to actually get allocated instead of the     intended very huge one, making the use of that buffer end up in a heap buffer overflow. (This bug is     almost identical to CVE-2017-8816.) (CVE-2018-14618)

  - Gnome Pango 1.42 and later is affected by: Buffer Overflow. The impact is: The heap based buffer overflow     can be used to get code execution. The component is: function name: pango_log2vis_get_embedding_levels,     assignment of nchars and the loop condition. The attack vector is: Bug can be used when application pass     invalid utf-8 strings to functions like pango_itemize. (CVE-2019-1010238)

  - Buffer overflow in the readextension function in gif2tiff.c in LibTIFF 4.0.6 allows remote attackers to     cause a denial of service (application crash) via a crafted GIF file. (CVE-2016-3186)

  - TIFFWriteScanline in tif_write.c in LibTIFF 3.8.2 has a heap-based buffer over-read, as demonstrated by     bmp2tiff. (CVE-2018-10779)

  - The TIFFWriteDirectorySec() function in tif_dirwrite.c in LibTIFF through 4.0.9 allows remote attackers to     cause a denial of service (assertion failure and application crash) via a crafted file, a different     vulnerability than CVE-2017-13726. (CVE-2018-10963)

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 AOS installed on the remote host is prior to 5.17.1. It is, therefore, affected by multiple vulnerabilities as referenced in the NXSA-AOS-5.17.1 advisory.

  - When using the Apache JServ Protocol (AJP), care must be taken when trusting incoming connections to     Apache Tomcat. Tomcat treats AJP connections as having higher trust than, for example, a similar HTTP     connection. If such connections are available to an attacker, they can be exploited in ways that may be     surprising. In Apache Tomcat 9.0.0.M1 to 9.0.0.30, 8.5.0 to 8.5.50 and 7.0.0 to 7.0.99, Tomcat shipped     with an AJP Connector enabled by default that listened on all configured IP addresses. It was expected     (and recommended in the security guide) that this Connector would be disabled if not required. This     vulnerability report identified a mechanism that allowed: - returning arbitrary files from anywhere in the     web application - processing any file in the web application as a JSP Further, if the web application     allowed file upload and stored those files within the web application (or the attacker was able to control     the content of the web application by some other means) then this, along with the ability to process a     file as a JSP, made remote code execution possible. It is important to note that mitigation is only     required if an AJP port is accessible to untrusted users. Users wishing to take a defence-in-depth     approach and block the vector that permits returning arbitrary files and execution as JSP may upgrade to     Apache Tomcat 9.0.31, 8.5.51 or 7.0.100 or later. A number of changes were made to the default AJP     Connector configuration in 9.0.31 to harden the default configuration. It is likely that users upgrading     to 9.0.31, 8.5.51 or 7.0.100 or later will need to make small changes to their configurations.
    (CVE-2020-1938)

  - rtl_p2p_noa_ie in drivers/net/wireless/realtek/rtlwifi/ps.c in the Linux kernel through 5.3.6 lacks a     certain upper-bound check, leading to a buffer overflow. (CVE-2019-17666)

  - The Linux kernel before 5.1-rc5 allows page->_refcount reference count overflow, with resultant use-after-     free issues, if about 140 GiB of RAM exists. This is related to fs/fuse/dev.c, fs/pipe.c, fs/splice.c,     include/linux/mm.h, include/linux/pipe_fs_i.h, kernel/trace/trace.c, mm/gup.c, and mm/hugetlb.c. It can     occur with FUSE requests. (CVE-2019-11487)

  - A flaw was found in the fix for CVE-2019-11135, in the Linux upstream kernel versions before 5.5 where,     the way Intel CPUs handle speculative execution of instructions when a TSX Asynchronous Abort (TAA) error     occurs. When a guest is running on a host CPU affected by the TAA flaw (TAA_NO=0), but is not affected by     the MDS issue (MDS_NO=1), the guest was to clear the affected buffers by using a VERW instruction     mechanism. But when the MDS_NO=1 bit was exported to the guests, the guests did not use the VERW mechanism     to clear the affected buffers. This issue affects guests running on Cascade Lake CPUs and requires that     host has 'TSX' enabled. Confidentiality of data is the highest threat associated with this vulnerability.
    (CVE-2019-19338)

  - The xz_decomp function in xzlib.c in libxml2 2.9.1 does not properly detect compression errors, which     allows context-dependent attackers to cause a denial of service (process hang) via crafted XML data.
    (CVE-2015-8035)

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

ID	Name	Product	Family	Published	Updated	Severity
135931	Amazon Linux 2 : python-virtualenv (ALAS-2020-1413)	Nessus	Amazon Linux Local Security Checks	4/24/2020	12/11/2024	critical
136517	RHEL 7 : python-virtualenv (RHSA-2020:2081)	Nessus	Red Hat Local Security Checks	5/12/2020	11/7/2024	critical
137039	Scientific Linux Security Update : python-virtualenv on SL7.x (noarch) (20200512)	Nessus	Scientific Linux Local Security Checks	6/2/2020	3/8/2024	critical
143977	NewStart CGSL CORE 5.05 / MAIN 5.05 : python-virtualenv Multiple Vulnerabilities (NS-SA-2020-0118)	Nessus	NewStart CGSL Local Security Checks	12/9/2020	2/5/2024	critical
182762	Debian dla-3610 : python-urllib3 - security update	Nessus	Debian Local Security Checks	10/8/2023	1/22/2025	critical
221988	Linux Distros Unpatched Vulnerability : CVE-2018-20060	Nessus	Misc.	3/4/2025	3/4/2025	critical
164582	Nutanix AOS : Multiple Vulnerabilities (NXSA-AOS-5.16.1.3)	Nessus	Misc.	9/1/2022	2/17/2025	critical
164573	Nutanix AOS : Multiple Vulnerabilities (NXSA-AOS-5.16)	Nessus	Misc.	9/1/2022	2/17/2025	critical
164612	Nutanix AOS : Multiple Vulnerabilities (NXSA-AOS-5.17.1)	Nessus	Misc.	9/1/2022	2/17/2025	critical

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