[SECURITY] [DSA 2626-1] lighttpd security update

Debian Security Advisory DSA-2626-1 [email protected]
http://www.debian.org/security/ Thijs Kinkhorst
February 17, 2013 http://www.debian.org/security/faq

Package : lighttpd
Vulnerability : several issues
Problem type : remote
Debian-specific: no
CVE ID : CVE-2009-3555 CVE-2012-4929
Debian Bug : 700399

Several vulnerabilities were discovered in the TLS/SSL protocol. This
update addresses these protocol vulnerabilities in lighttpd.

CVE-2009-3555

Marsh Ray, Steve Dispensa, and Martin Rex discovered that the TLS
and SSLv3 protocols do not properly associate renegotiation
handshakes with an existing connection, which allows man-in-the-middle
attackers to insert data into HTTPS sessions. This issue is solved
in lighttpd by disabling client initiated renegotiation by default.

Those users that do actually need such renegotiations, can reenable
them via the new 'ssl.disable-client-renegotiation' parameter.

CVE-2012-4929

Juliano Rizzo and Thai Duong discovered a weakness in the TLS/SSL
protocol when using compression. This side channel attack, dubbed
'CRIME', allows eavesdroppers to gather information to recover the
original plaintext in the protocol. This update disables compression.

For the stable distribution (squeeze), these problems have been fixed in
version 1.4.28-2+squeeze1.2.

For the testing distribution (wheezy), and the unstable distribution (sid)
these problems have been fixed in version 1.4.30-1.

We recommend that you upgrade your lighttpd packages.

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

Mailing list: [email protected]