CVE-2012-4929 Information disclosure in n/a

What is CVE-2012-4929?

CVE-2012-4929 is a low-severity vulnerability in Debian Debian Linux, published on 15 Sep 2012. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

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.

Weakness: CWE-310

Which versions are affected by CVE-2012-4929?

It affects 3 products.

Products include Debian Debian Linux, Google Chrome, Mozilla Firefox.

How do I fix CVE-2012-4929?

Apply the vendor's patch.

Is CVE-2012-4929 being exploited?

There is no known exploitation of CVE-2012-4929 in the wild and no public exploit code.

Public exploit code: 2 proofs of concept on GitHub.

Other vulnerabilities in Debian Debian Linux

• CVE-2015-3306 ProFTPD Improper Access Control Exploited Critical 10.0
• CVE-2025-49113 RoundCube Webmail Deserialization of Untrusted Data Exploited Critical 9.9
• CVE-2026-24061 GNU InetUtils Argument Injection Exploited Critical 9.8
• CVE-2025-39682 Linux Kernel Improper Check for Unusual or Exceptional Conditions Exploited Critical 9.8
• CVE-2024-9680 Mozilla Firefox Use-After-Free Exploited Critical 9.8

All Debian Debian Linux vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2012-4929, DSA-2627-1, GHSA-348j-44v2-vwfr, openSUSE-SU-2024:10531-1.