Debian DSA-2237-1 : apr - denial of service

medium Nessus Plugin ID 53900
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VPR Score: 2.2


The remote Debian host is missing a security-related update.


A flaw was found in the APR library, which could be exploited through Apache HTTPD's mod_autoindex. If a directory indexed by mod_autoindex contained files with sufficiently long names, a remote attacker could send a carefully crafted request which would cause excessive CPU usage. This could be used in a denial of service attack.


Upgrade the apr packages and restart the apache2 server.

For the oldstable distribution (lenny), this problem has been fixed in version 1.2.12-5+lenny3.

For the stable distribution (squeeze), this problem has been fixed in version 1.4.2-6+squeeze1.

See Also

Plugin Details

Severity: Medium

ID: 53900

File Name: debian_DSA-2237.nasl

Version: 1.22

Type: local

Agent: unix

Published: 5/16/2011

Updated: 1/4/2021

Dependencies: ssh_get_info.nasl

Risk Information

Risk Factor: Medium

VPR Score: 2.2

CVSS v2.0

Base Score: 4.3

Temporal Score: 3.4

Vector: AV:N/AC:M/Au:N/C:N/I:N/A:P

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

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:apr, cpe:/o:debian:debian_linux:5.0, cpe:/o:debian:debian_linux:6.0

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 5/15/2011

Reference Information

CVE: CVE-2011-0419

BID: 47820, 47929

DSA: 2237