CVE-2011-1764

Severity: high (CVSS 7.5 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 3.9% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2011-10-05 · updated 2026-06-16
Weakness: CWE-134

Description

Format string vulnerability in the dkim_exim_verify_finish function in src/dkim.c in Exim before 4.76 might allow remote attackers to execute arbitrary code or cause a denial of service (daemon crash) via format string specifiers in data used in DKIM logging, as demonstrated by an identity field containing a % (percent) character.

Affected products

Exim: through 4.75; 2.10, 2.11, 2.12, 3.00, 3.01, 3.02 (+63)

References

http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=624670
http://bugs.exim.org/show_bug.cgi?id=1106
http://git.exim.org/exim.git/commit/337e3505b0e6cd4309db6bf6062b33fa56e06cf8
http://lists.opensuse.org/opensuse-security-announce/2011-05/msg00005.html
http://secunia.com/advisories/51155
http://www.debian.org/security/2011/dsa-2232
https://bugzilla.redhat.com/show_bug.cgi?id=702474
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=624670
http://bugs.exim.org/show_bug.cgi?id=1106
http://git.exim.org/exim.git/commit/337e3505b0e6cd4309db6bf6062b33fa56e06cf8
http://lists.opensuse.org/opensuse-security-announce/2011-05/msg00005.html
http://secunia.com/advisories/51155

Get alerted when CVE-2011-1764 or the next vulnerability affects your stack