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CVE-2012-4929

Publication date 15 September 2012

Last updated 24 July 2024

Ubuntu priority

Medium

Why this priority?

The TLS protocol 1.2 and earlier, as used in Mozilla Firefox, Google Chrome, Qt, and other products, can encrypt compressed data without properly obfuscating the length of the unencrypted data, which allows man-in-the-middle attackers to obtain plaintext HTTP headers by observing length differences during a series of guesses in which a string in an HTTP request potentially matches an unknown string in an HTTP header, aka a "CRIME" attack.

Read the notes from the security team

Status

Package Ubuntu Release Status
apache2 13.10 saucy
Fixed 2.2.22-6ubuntu3
13.04 raring
Fixed 2.2.22-6ubuntu3
12.10 quantal
Fixed 2.2.22-6ubuntu2.1
12.04 LTS precise
Fixed 2.2.22-1ubuntu1.2
11.10 oneiric
Fixed 2.2.20-1ubuntu1.3
11.04 natty Ignored
10.04 LTS lucid
Fixed 2.2.14-5ubuntu8.10
8.04 LTS hardy
Fixed 2.2.8-1ubuntu0.24
chromium-browser 13.10 saucy
Not affected
13.04 raring
Not affected
12.10 quantal
Not affected
12.04 LTS precise
Fixed 23.0.1271.97-0ubuntu0.12.04.1
11.10 oneiric
Fixed 23.0.1271.97-0ubuntu0.11.10.1
11.04 natty Ignored
10.04 LTS lucid
Fixed 23.0.1271.97-0ubuntu0.10.04.1
8.04 LTS hardy Not in release
nss 13.10 saucy
Not affected
13.04 raring
Not affected
12.10 quantal
Not affected
12.04 LTS precise
Not affected
11.10 oneiric
Not affected
11.04 natty
Not affected
10.04 LTS lucid
Not affected
8.04 LTS hardy Ignored
openssl 13.10 saucy
Fixed 1.0.1e-2ubuntu1.1
13.04 raring
Fixed 1.0.1c-4ubuntu8.1
12.10 quantal
Fixed 1.0.1c-3ubuntu2.5
12.04 LTS precise
Fixed 1.0.1-4ubuntu5.10
11.10 oneiric Ignored
11.04 natty Ignored
10.04 LTS lucid
Fixed 0.9.8k-7ubuntu8.15
8.04 LTS hardy Ignored
openssl098 13.10 saucy Ignored
13.04 raring Ignored
12.10 quantal Ignored
12.04 LTS precise Ignored
11.10 oneiric Ignored
11.04 natty Not in release
10.04 LTS lucid Not in release
8.04 LTS hardy Not in release
qt4-x11 13.10 saucy
Fixed 4:4.8.3+dfsg-0ubuntu3
13.04 raring
Fixed 4:4.8.3+dfsg-0ubuntu3
12.10 quantal
Fixed 4:4.8.3+dfsg-0ubuntu3
12.04 LTS precise
Fixed 4:4.8.1-0ubuntu4.3
11.10 oneiric
Fixed 4:4.7.4-0ubuntu8.2
11.04 natty Ignored
10.04 LTS lucid
Fixed 4:4.6.2-0ubuntu5.5
8.04 LTS hardy Ignored

Notes

jdstrand

Fedora/RedHat has a patch to check for OPENSSL_NO_DEFAULT_ZLIB that can be used to mitigate this flaw. See RedHat bug #857051 No patch for upstream OpenSSL. This may be considered a flaw in the applications using OpenSSL and not OpenSSL itself.

mdeslaur

adding apache2, we should backport the SSLCompression option. in trunk and 2.4, sslcompression defaults to off with a second commit. Second commit to default to off isn't in 2.2 yet. redhat disabled zlib compression by default in openssl: https://rhn.redhat.com/errata/RHSA-2013-0587.html