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

High Nessus Plugin ID 39363


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


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.

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.


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

See Also


Plugin Details

Severity: High

ID: 39363

File Name: ubuntu_USN-786-1.nasl

Version: 1.22

Type: local

Agent: unix

Published: 2009/06/11

Updated: 2019/08/02

Dependencies: 12634

Risk Information

Risk Factor: High

CVSS v2.0

Base Score: 7.8

Temporal Score: 6.1

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C

Temporal Vector: CVSS2#E:POC/RL:OF/RC:C

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:libaprutil1, p-cpe:/a:canonical:ubuntu_linux:libaprutil1-dbg, p-cpe:/a:canonical:ubuntu_linux:libaprutil1-dev, cpe:/o:canonical:ubuntu_linux:8.04:-:lts, cpe:/o:canonical:ubuntu_linux:8.10, cpe:/o:canonical:ubuntu_linux:9.04

Required KB Items: Host/cpu, Host/Ubuntu, Host/Ubuntu/release, Host/Debian/dpkg-l

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 2009/06/10

Reference Information

CVE: CVE-2009-0023, CVE-2009-1955, CVE-2009-1956

BID: 35221, 35251, 35253

USN: 786-1

CWE: 119, 189, 399