CVE-2011-2535

Severity: medium (CVSS 5.0 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 4.6% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2011-07-06 · updated 2026-06-16
Weakness: CWE-20

Description

chan_iax2.c in the IAX2 channel driver in Asterisk Open Source 1.4.x before 1.4.41.1, 1.6.2.x before 1.6.2.18.1, and 1.8.x before 1.8.4.3, and Asterisk Business Edition C.3 before C.3.7.3, accesses a memory address contained in an option control frame, which allows remote attackers to cause a denial of service (daemon crash) or possibly have unspecified other impact via a crafted frame.

Affected products

Digium Asterisk: 1.8.0, 1.8.0-beta1, 1.8.0-beta2, 1.8.0-beta3, 1.8.0-beta4, 1.8.0-beta5 (+189)

References

http://downloads.asterisk.org/pub/security/AST-2011-010-1.8.diff
http://downloads.asterisk.org/pub/security/AST-2011-010.html
http://lists.fedoraproject.org/pipermail/package-announce/2011-July/062628.html
http://secunia.com/advisories/44973
http://secunia.com/advisories/45048
http://secunia.com/advisories/45201
http://secunia.com/advisories/45239
http://securitytracker.com/id?1025708
http://www.debian.org/security/2011/dsa-2276
http://www.osvdb.org/73309
http://www.securityfocus.com/bid/48431
https://exchange.xforce.ibmcloud.com/vulnerabilities/68205

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