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.

  - 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. (CVE-2012-3505)

  - main.c in Tinyproxy 1.8.4 and earlier creates a /run/tinyproxy/tinyproxy.pid file after dropping     privileges to a non-root account, which might allow local users to kill arbitrary processes by leveraging     access to this non-root account for tinyproxy.pid modification before a root script executes a kill `cat     /run/tinyproxy/tinyproxy.pid` command. (CVE-2017-11747)

  - 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)

  - Rejected reason: This CVE ID is a duplicate of CVE-2022-40468 (CVE-2023-40533)

  - A use-after-free vulnerability exists in the HTTP Connection Headers parsing in Tinyproxy 1.11.1 and     Tinyproxy 1.10.0. A specially crafted HTTP header can trigger reuse of previously freed memory, which     leads to memory corruption and could lead to remote code execution. An attacker needs to make an     unauthenticated HTTP request to trigger this vulnerability. (CVE-2023-49606)

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	critical
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

critical

medium

medium

medium