Lynx: Buffer overflow in NNTP processing
1.
Gentoo Linux Security Advisory
Version Information
Advisory Reference |
GLSA 200510-15 / Lynx |
Release Date |
October 17, 2005 |
Latest Revision |
October 17, 2005: 01 |
Impact |
normal |
Exploitable |
remote |
Package |
Vulnerable versions |
Unaffected versions |
Architecture(s) |
www-client/lynx |
<
2.8.5-r1 |
>=
2.8.5-r1 |
All supported architectures
|
Related bugreports:
#108451
Synopsis
Lynx contains a buffer overflow that may be exploited to execute arbitrary
code.
2.
Impact Information
Background
Lynx is a text-mode browser for the World Wide Web. It supports
multiple URL types, including HTTP and NNTP URLs.
Description
When accessing a NNTP URL, Lynx connects to a NNTP server and
retrieves information about the available articles in the target
newsgroup. Ulf Harnhammar discovered a buffer overflow in a function
that handles the escaping of special characters.
Impact
An attacker could setup a malicious NNTP server and entice a user
to access it using Lynx (either by creating NNTP links on a web page or
by forcing a redirect for Lynx users). The data returned by the NNTP
server would trigger the buffer overflow and execute arbitrary code
with the rights of the user running Lynx.
3.
Resolution Information
Workaround
There is no known workaround at this time.
Resolution
All Lynx users should upgrade to the latest version:
Code Listing 3.1: Resolution |
# emerge --sync
# emerge --ask --oneshot --verbose ">=www-client/lynx-2.8.5-r1"
|
4.
References
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