GLSA-200512-09 : cURL: Off-by-one errors in URL handling

This script is Copyright (C) 2005-2014 Tenable Network Security, Inc.


Synopsis :

The remote Gentoo host is missing one or more security-related
patches.

Description :

The remote host is affected by the vulnerability described in GLSA-200512-09
(cURL: Off-by-one errors in URL handling)

Stefan Esser from the Hardened-PHP Project has reported a
vulnerability in cURL that allows for a local buffer overflow when cURL
attempts to parse specially crafted URLs. The URL can be specially
crafted in one of two ways: the URL could be malformed in a way that
prevents a terminating null byte from being added to either a hostname
or path buffer
or the URL could contain a '?' separator in the
hostname portion, which causes a '/' to be prepended to the resulting
string.

Impact :

An attacker capable of getting cURL to parse a maliciously crafted
URL could cause a denial of service or execute arbitrary code with the
privileges of the user making the call to cURL. An attacker could also
escape open_basedir or safe_mode pseudo-restrictions when exploiting
this problem from within a PHP program when PHP is compiled with
libcurl.

Workaround :

There is no known workaround at this time.

See also :

http://www.hardened-php.net/advisory_242005.109.html
http://www.gentoo.org/security/en/glsa/glsa-200512-09.xml

Solution :

All cURL users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose '>=net-misc/curl-7.15.1'

Risk factor :

Medium / CVSS Base Score : 4.6
(CVSS2#AV:L/AC:L/Au:N/C:P/I:P/A:P)

Family: Gentoo Local Security Checks

Nessus Plugin ID: 20329 (gentoo_GLSA-200512-09.nasl)

Bugtraq ID:

CVE ID: CVE-2005-4077