[IT-SecNots] [SECURITY] [DSA 3796-1] apache2 security update

[Sebastien Delafond <seb AT debian.org>]

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Debian Security Advisory DSA-3796-1                   security AT debian.org
https://www.debian.org/security/                       Sebastien Delafond
February 26, 2017                     https://www.debian.org/security/faq
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Package        : apache2
CVE ID         : CVE-2016-0736 CVE-2016-2161 CVE-2016-8743

Several vulnerabilities were discovered in the Apache2 HTTP server.

CVE-2016-0736

  RedTeam Pentesting GmbH discovered that mod_session_crypto was
  vulnerable to padding oracle attacks, which could allow an attacker
  to guess the session cookie.

CVE-2016-2161

  Maksim Malyutin discovered that malicious input to mod_auth_digest
  could cause the server to crash, causing a denial of service.

CVE-2016-8743

  David Dennerline, of IBM Security's X-Force Researchers, and Régis
  Leroy discovered problems in the way Apache handled a broad pattern
  of unusual whitespace patterns in HTTP requests. In some
  configurations, this could lead to response splitting or cache
  pollution vulnerabilities.  To fix these issues, this update makes
  Apache httpd be more strict in what HTTP requests it accepts.

  If this causes problems with non-conforming clients, some checks can
  be relaxed by adding the new directive "HttpProtocolOptions unsafe"
  to the configuration.

This update also fixes the issue where mod_reqtimeout was not enabled
by default on new installations.

For the stable distribution (jessie), these problems have been fixed in
version 2.4.10-10+deb8u8.

For the testing (stretch) and unstable (sid) distributions, these
problems have been fixed in version 2.4.25-1.

We recommend that you upgrade your apache2 packages.

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/

Mailing list: debian-security-announce AT lists.debian.org
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