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Home » Security Advisories» OpenPKG » Lynx command injection

Lynx command injection

According to a iDEFENSE security advisory, a command injection vulnerability exists in the Lynx [2] WWW textual client. The vulnerability could allow attackers to execute arbitrary commands with the privileges of the underlying user. The problem specifically exists within the feature to execute local "cgi-bin" programs via the "lynxcgi:" URI handler.

  • Vendor: OpenPKG
  • Vendor ID: SA-2005.026
  • Date: December 03, 2005


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________________________________________________________________________

OpenPKG Security Advisory The OpenPKG Project
http://www.openpkg.org/security.html http://www.openpkg.org
[email protected] [email protected]
OpenPKG-SA-2005.026 03-Dec-2005
________________________________________________________________________

Package: lynx
Vulnerability: command injection
OpenPKG Specific: no

Affected Releases: Affected Packages: Corrected Packages:
OpenPKG CURRENT <= lynx-2.8.5-20051030 >= lynx-2.8.5.5-20051203
OpenPKG 2.5 <= lynx-2.8.5-2.5.0 >= lynx-2.8.5-2.5.1
OpenPKG 2.4 <= lynx-2.8.5-2.4.0 >= lynx-2.8.5-2.4.1
OpenPKG 2.3 <= lynx-2.8.5-2.3.0 >= lynx-2.8.5-2.3.1

Description:
According to a iDEFENSE security advisory [0], a command injection
vulnerability exists in the Lynx [2] WWW textual client. The
vulnerability could allow attackers to execute arbitrary commands
with the privileges of the underlying user. The problem specifically
exists within the feature to execute local "cgi-bin" programs via the
"lynxcgi:" URI handler. The Common Vulnerabilities and Exposures (CVE)
project assigned the id CVE-2005-2929 [3] to the problem.

Additionally, according to a security advisory from Ulf Harnhammar
[1], a stack-based buffer overflow in the "HTrjis" function in Lynx
allows remote NNTP servers to execute arbitrary code via certain
article headers containing Asian characters that cause Lynx to
add extra escape (ESC) characters. The Common Vulnerabilities and
Exposures (CVE) project assigned the id CVE-2005-3120 [4] to the
problem.
________________________________________________________________________

References:
[0] http://www.idefense.com/application/poi/display?id=338
[1] http://lists.grok.org.uk/pipermail/full-disclosure/2005-October/038019.html
[2] http://lynx.isc.org/
[3] http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-2929
[4] http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-3120
________________________________________________________________________

For security reasons, this advisory was digitally signed with the
OpenPGP public key "OpenPKG " (ID 63C4CB9F) of the
OpenPKG project which you can retrieve from http://pgp.openpkg.org and
hkp://pgp.openpkg.org. Follow the instructions on http://pgp.openpkg.org/
for details on how to verify the integrity of this advisory.
________________________________________________________________________

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