Potential leak of left-over heap data if custom error page templates containing special non-standard variables are used. Tinyproxy commit 84f203f and earlier use uninitialized buffers in process_request() function.

There are packages installed that are affected by a vulnerability referenced in the following CVE:

  - Potential leak of left-over heap data if custom error page templates containing special non-standard
    variables are used. Tinyproxy commit 84f203f and earlier use uninitialized buffers in process_request()
    function. (CVE-2022-40468)

The remote Ubuntu 14.04 LTS host has a package installed that is affected by a vulnerability as referenced in the USN-7140-2 advisory.

    USN-7140-1 fixed CVE-2022-40468 in tinyproxy. This update provides the corresponding update for Ubuntu     14.04 LTS.



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

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

The remote Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS / 22.04 LTS host has packages installed that are affected by a vulnerability as referenced in the USN-7140-1 advisory.

    It was discovered that Tinyproxy did not properly manage memory under certain circumstances. An attacker     could possibly use this issue to leak left-over heap data if custom error page templates containing     special non-standard variables are used.

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

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 11 host has packages installed that are affected by multiple vulnerabilities as referenced in the dla-3892 advisory.

    - -------------------------------------------------------------------------     Debian LTS Advisory DLA-3892-1                debian-lts@lists.debian.org     https://www.debian.org/lts/security/                    Thorsten Alteholz     September 18, 2024                            https://wiki.debian.org/LTS
    - -------------------------------------------------------------------------

    Package        : tinyproxy     Version        : 1.10.0-5+deb11u1     CVE ID         : CVE-2022-40468 CVE-2023-49606


    Two issues have been found in tinyproxy, a lightweight, non-caching,     optionally anonymizing HTTP proxy.
    They are related to an use after free in header parsing of GTTP     connections and a potential leak of left-over heap data.



    For Debian 11 bullseye, these problems have been fixed in version     1.10.0-5+deb11u1.

    We recommend that you upgrade your tinyproxy packages.

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

    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

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 remote openSUSE 15 host has a package installed that is affected by multiple vulnerabilities as referenced in the openSUSE-SU-2024:0119-1 advisory.

    - Update to release 1.11.2
      * Fix potential use-after-free in header handling [CVE-2023-49606, boo#1223746]
      * Prevent junk from showing up in error page in invalid requests [CVE-2022-40468, CVE-2023-40533,     boo#1223743]

    - Move tinyproxy program to /usr/bin.

    - Update to release 1.11.1
      * New fnmatch based filtertype

    - Update to release 1.11
      * Support for multiple bind directives.

    - update to 1.10.0:
      * Configuration file has moved from /etc/tinyproxy.conf to         /etc/tinyproxy/tinyproxy.conf.
      * Add support for basic HTTP authentication
      * Add socks upstream support
      * Log to stdout if no logfile is specified
      * Activate reverse proxy by default
      * Support bind with transparent mode
      * Allow multiple listen statements in the configuration
      * Fix CVE-2017-11747: Create PID file before dropping privileges.
      * Fix CVE-2012-3505: algorithmic complexity DoS in hashmap
      * Bugfixes
      * BB#110: fix algorithmic complexity DoS in hashmap
      * BB#106: fix CONNECT requests with IPv6 literal addresses as host
      * BB#116: fix invalid free for GET requests to ipv6 literal address
      * BB#115: Drop supplementary groups
      * BB#109: Fix crash (infinite loop) when writing to log file fails
      * BB#74: Create log and pid files after we drop privs
      * BB#83: Use output of id instead of $USER

Tenable has extracted the preceding description block directly from the SUSE 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 host is affected by the vulnerability described in GLSA-202305-27 (Tinyproxy: Memory Disclosure)

  - Potential leak of left-over heap data if custom error page templates containing special non-standard     variables are used. Tinyproxy commit 84f203f and earlier use uninitialized buffers in process_request()     function. (CVE-2022-40468)

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

ID	Name	Product	Family	Severity
424554	Alpine: multiple tinyproxy packages: security update to 1.11.1-r2	Tenable Cloud Security	Alpine Linux Local Security Checks	high
424554	Alpine: multiple tinyproxy packages: security update to 1.11.1-r2	Tenable Self-Hosted Container Security	Alpine Linux Local Security Checks	high
213503	Ubuntu 14.04 LTS : Tinyproxy vulnerability (USN-7140-2)	Nessus	Ubuntu Local Security Checks	high
212175	Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS / 22.04 LTS : Tinyproxy vulnerability (USN-7140-1)	Nessus	Ubuntu Local Security Checks	high
207396	Debian dla-3892 : tinyproxy - security update	Nessus	Debian Local Security Checks	high
195342	openSUSE 15 Security Update : tinyproxy (openSUSE-SU-2024:0119-1)	Nessus	SuSE Local Security Checks	high
176191	GLSA-202305-27 : Tinyproxy: Memory Disclosure	Nessus	Gentoo Local Security Checks	high
409866	Alpine: multiple tinyproxy packages: security update to 1.11.1-r1 (deprecated)	Tenable Cloud Security	Alpine Linux Local Security Checks	high
409866	Alpine: multiple tinyproxy packages: security update to 1.11.1-r1 (deprecated)	Tenable Self-Hosted Container Security	Alpine Linux Local Security Checks	high

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CVE-2022-40468

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