Tinyproxy 1.8.3 and earlier allows remote attackers to cause a denial of service (CPU and memory consumption) via (1) a large number of headers or (2) a large number of forged headers that trigger hash collisions predictably. bucket.

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.

Tinyproxy allowed remote attackers to cause a denial of service (CPU and memory consumption) via (1) a large number of headers or (2) a large number of forged headers that trigger hash collisions predictably. bucket.

This update fixes this by limiting headers and improving the hash keying.

The remote host is affected by the vulnerability described in GLSA-201312-15 (Tinyproxy: Denial of Service)

    A vulnerability has been discovered in the way how Tinyproxy works with       headers.
  Impact :

    A remote attacker could send a specially crafted request with too many       headers, possibly resulting in a Denial of Service condition.
  Workaround :

    There is no known workaround at this time.

gpernot discovered that Tinyproxy, a HTTP proxy, is vulnerable to a denial of service by remote attackers by sending crafted request headers.

ID	Name	Product	Family	Severity
195342	openSUSE 15 Security Update : tinyproxy (openSUSE-SU-2024:0119-1)	Nessus	SuSE Local Security Checks	high
75087	openSUSE Security Update : tinyproxy (openSUSE-SU-2013:1201-1)	Nessus	SuSE Local Security Checks	medium
71628	GLSA-201312-15 : Tinyproxy: Denial of Service	Nessus	Gentoo Local Security Checks	medium
62666	Debian DSA-2564-1 : tinyproxy - denial of service	Nessus	Debian Local Security Checks	medium

Detections

Analytics

CVE-2012-3505

high

Tenable Plugins

high

medium

medium

medium