Debian DSA-2579-1 : apache2 - Multiple issues

Medium Nessus Plugin ID 63114

Synopsis

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

Description

A vulnerability has been found in the Apache HTTPD Server :

- CVE-2012-4557 A flaw was found when mod_proxy_ajp connects to a backend server that takes too long to respond. Given a specific configuration, a remote attacker could send certain requests, putting a backend server into an error state until the retry timeout expired. This could lead to a temporary denial of service.

In addition, this update also adds a server side mitigation for the following issue :

- CVE-2012-4929 If using SSL/TLS data compression with HTTPS in an connection to a web browser, man-in-the-middle attackers may obtain plaintext HTTP headers. This issue is known as the 'CRIME' attack. This update of apache2 disables SSL compression by default. A new SSLCompression directive has been backported that may be used to re-enable SSL data compression in environments where the 'CRIME' attack is not an issue. For more information, please refer to the SSLCompression Directive documentation.

Solution

Upgrade the apache2 packages.

For the stable distribution (squeeze), these problems have been fixed in version 2.2.16-6+squeeze10.

See Also

https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=689936

https://security-tracker.debian.org/tracker/CVE-2012-4557

https://security-tracker.debian.org/tracker/CVE-2012-4929

https://httpd.apache.org/docs/current/mod/mod_ssl.html#sslcompression

https://packages.debian.org/source/squeeze/apache2

https://www.debian.org/security/2012/dsa-2579

Plugin Details

Severity: Medium

ID: 63114

File Name: debian_DSA-2579.nasl

Version: 1.11

Type: local

Agent: unix

Published: 2012/12/02

Updated: 2019/08/12

Dependencies: 12634

Risk Information

Risk Factor: Medium

CVSS v2.0

Base Score: 5

Temporal Score: 3.7

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

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

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:apache2, cpe:/o:debian:debian_linux:6.0

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

Exploit Available: false

Exploit Ease: No known exploits are available

Patch Publication Date: 2012/11/30

Vulnerability Publication Date: 2012/09/15

Reference Information

CVE: CVE-2012-4557, CVE-2012-4929

BID: 55704

DSA: 2579