Ubuntu 8.04 LTS / 8.10 / 9.04 : apr-util vulnerabilities (USN-786-1)

Ubuntu Security Notice (C) 2009-2016 Canonical, Inc. / NASL script (C) 2009-2016 Tenable Network Security, Inc.


Synopsis :

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

Description :

Matthew Palmer discovered an underflow flaw in apr-util. An attacker
could cause a denial of service via application crash in Apache using
a crafted SVNMasterURI directive, .htaccess file, or when using
mod_apreq2. Applications using libapreq2 are also affected.
(CVE-2009-0023)

It was discovered that the XML parser did not properly handle entity
expansion. A remote attacker could cause a denial of service via
memory resource consumption by sending a crafted request to an Apache
server configured to use mod_dav or mod_dav_svn. (CVE-2009-1955)

C. Michael Pilato discovered an off-by-one buffer overflow in apr-util
when formatting certain strings. For big-endian machines (powerpc,
hppa and sparc in Ubuntu), a remote attacker could cause a denial of
service or information disclosure leak. All other architectures for
Ubuntu are not considered to be at risk. (CVE-2009-1956).

Note that Tenable Network Security has extracted the preceding
description block directly from the Ubuntu security advisory. Tenable
has attempted to automatically clean and format it as much as possible
without introducing additional issues.

Solution :

Update the affected libaprutil1, libaprutil1-dbg and / or
libaprutil1-dev packages.

Risk factor :

High / CVSS Base Score : 7.8
(CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C)
CVSS Temporal Score : 6.4
(CVSS2#E:F/RL:OF/RC:ND)
Public Exploit Available : true

Family: Ubuntu Local Security Checks

Nessus Plugin ID: 39363 ()

Bugtraq ID: 35221
35251
35253

CVE ID: CVE-2009-0023
CVE-2009-1955
CVE-2009-1956

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