CVE-2012-2942 Memory corruption in n/a

What is CVE-2012-2942?

CVE-2012-2942 is a medium-severity memory corruption vulnerability in n/a, published on 27 May 2012. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Buffer overflow in the trash buffer in the header capture functionality in HAProxy before 1.4.21, when global.tune.bufsize is set to a value greater than the default and header rewriting is enabled, allows remote attackers to cause a denial of service and possibly execute arbitrary code via unspecified vectors.

Weakness: CWE-119

Which versions are affected by CVE-2012-2942?

It affects 1 product.

Products include Haproxy Haproxy.

How do I fix CVE-2012-2942?

Upgrade to a fixed version.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2012-2942 being exploited?

There is no known exploitation of CVE-2012-2942 in the wild and no public exploit code.

Other vulnerabilities in n/a

• CVE-2026-55203 HAProxy - Integer Overflow in FCGI Demux Record Length Field Critical 9.0
• CVE-2026-55204 HAProxy - NULL Pointer Dereference in hpack_dht_insert Function High 8.7
• CVE-2023-45539 Information disclosure in n/a High 8.2
• CVE-2024-45506 Denial of service in n/a High 7.5
• CVE-2023-0836 Information disclosure in HAProxy High 7.5

Sources

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

Also known as CVE-2012-2391, DEBIAN-CVE-2012-2942, GHSA-m6hh-qxwf-f2wj.