GLSA 201612-13: nghttp2: Denial of Service

http://security.gentoo.org/

Severity:	normal
Title:	nghttp2: Denial of Service
Date:	12/05/2016
Bugs:	#574780
ID:	201612-13

Synopsis

Nghttp2 is vulnerable to a Denial of Service attack.

Background

Nghttp2 is an implementation of HTTP/2 and its header compression algorithm HPACK in C.

Affected packages

Package	Vulnerable	Unaffected	Architecture(s)
net-libs/nghttp2	< 1.7.1	>= 1.7.1	All supported architectures

Description

Nghttpd, nghttp, and libnghttp2_asio applications do not limit the memory usage for the incoming HTTP header field. If a peer sends a specially crafted HTTP/2 HEADERS frame and CONTINUATION frame, they will crash with an out of memory error.

Impact

A remote attacker could possibly cause a Denial of Service condition.

Workaround

There is no known workaround at this time.

Resolution

All nghttp2 users should upgrade to the latest version:

      # emerge --sync
      # emerge --ask --oneshot --verbose ">=net-libs/nghttp2-1.7.1"

References

CVE-2016-1544

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-201612-13.xml

Concerns?

Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org.