CVE-2011-1147
Multiple stack-based and heap-based buffer overflows in the (1) decode_open_type and (2) udptl_rx_packet functions in main/udptl.c in Asterisk Open Source 1.4.x before 1.4.39.2, 1.6.1.x before 1.6.1.22, 1.6.2.x before 1.6.2.16.2, and 1.8 before 1.8.2.4; Business Edition C.x.x before C.3.6.3; AsteriskNOW 1.5; and s800i (Asterisk Appliance), when T.38 support is enabled, allow remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a crafted UDPTL packet.
Key facts
- CVSS score
- 6.8 (v2.0)
- Severity
- MEDIUM
- CVSS vector
AV:N/AC:M/Au:N/C:P/I:P/A:P- Weakness (CWE)
- CWE-119
- EPSS score
- 3.5% (89th percentile)
- In CISA KEV
- No
- In EU EUVD
- Yes (EUVD-2011-1161)
- Published
- March 15, 2011
- NVD last modified
- June 16, 2026
- Status
- Modified
EU Vulnerability Database (EUVD)
This vulnerability is also tracked by ENISA as EUVD-2011-1161 in the EU Vulnerability Database. Last updated in EUVD on August 6, 2024.
View on the EU Vulnerability DatabaseAffected products
- digium / asterisk
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and 153 more…
References
- http://downloads.asterisk.org/pub/security/AST-2011-002.html(Vendor Advisory)
- http://lists.fedoraproject.org/pipermail/package-announce/2011-March/055030.html(Patch)
- http://lists.fedoraproject.org/pipermail/package-announce/2011-March/055421.html(Patch)
- http://lists.fedoraproject.org/pipermail/package-announce/2011-March/055634.html(Patch)
- http://secunia.com/advisories/43429(Vendor Advisory)
- http://secunia.com/advisories/43702(Vendor Advisory)
- http://www.debian.org/security/2011/dsa-2225
- http://www.openwall.com/lists/oss-security/2011/03/11/2
- http://www.openwall.com/lists/oss-security/2011/03/11/8
- http://www.securityfocus.com/bid/46474
- http://www.securitytracker.com/id?1025101
- http://www.vupen.com/english/advisories/2011/0635(Vendor Advisory)
Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS
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