CVE-2011-1147
What it is
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.
At a glance
- Exploitability
- Can be exploited over the network without logging in. Limited direct impact.
- Exploit odds
- 3.5% chance of exploitation in the next 30 days (EPSS).
- Fix
- A patch, advisory or fixed version is referenced. Upgrade or apply it.
Timeline
- PublishedDisclosed publicly on CVE.org and NVD
- Last updatedMost recent change to the record
Why it ranks here
- Exploited in the wild: no, CISA does not list it.
- Exploit odds: 3.5% in the next 30 days (EPSS).
- Severity: 6.8 MEDIUM (CVSS).
- Fix: a patch or advisory is linked.
Details
- Published
- Last modified
- Exploit probability
- 3.5% · EPSS, next 30 days
- Weakness
- CWE-119 · Buffer errors
- Record status
- Modified
Affected
- Digium Asterisk 1.4.0
- Digium Asterisk 1.4.1
- Digium Asterisk 1.4.2
- Digium Asterisk 1.4.3
- Digium Asterisk 1.4.10
- Digium Asterisk 1.4.10.1
- Digium Asterisk 1.4.11
- Digium Asterisk 1.4.12
Attack profile CVSS 2.0 · 6.8
- Attack vector
- Network
- Complexity
- Medium
- Authentication
- None
- Confidentiality
- Partial
- Integrity
- Partial
- Availability
- Partial
Raw vector
AV:N/AC:M/Au:N/C:P/I:P/A:P
Is it in your code?
Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.
Read https://cve-list.com/agent/cve/CVE-2011-1147.md and follow it. Check whether this project is affected by CVE-2011-1147. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.
Fix and advisories
- http://downloads.asterisk.org/pub/security/AST-2011-002.html
- http://lists.fedoraproject.org/pipermail/package-announce/2011-March/055030.html
- http://lists.fedoraproject.org/pipermail/package-announce/2011-March/055421.html
- http://lists.fedoraproject.org/pipermail/package-announce/2011-March/055634.html
- http://secunia.com/advisories/43429
- http://secunia.com/advisories/43702
- http://www.vupen.com/english/advisories/2011/0635
- http://downloads.asterisk.org/pub/security/AST-2011-002.html
- http://lists.fedoraproject.org/pipermail/package-announce/2011-March/055030.html
- http://lists.fedoraproject.org/pipermail/package-announce/2011-March/055421.html
References
- http://downloads.asterisk.org/pub/security/AST-2011-002.html
- http://lists.fedoraproject.org/pipermail/package-announce/2011-March/055030.html
- http://lists.fedoraproject.org/pipermail/package-announce/2011-March/055421.html
- http://lists.fedoraproject.org/pipermail/package-announce/2011-March/055634.html
- http://secunia.com/advisories/43429
- http://secunia.com/advisories/43702
- 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
- http://downloads.asterisk.org/pub/security/AST-2011-002.html
- http://lists.fedoraproject.org/pipermail/package-announce/2011-March/055030.html
- http://lists.fedoraproject.org/pipermail/package-announce/2011-March/055421.html
- http://lists.fedoraproject.org/pipermail/package-announce/2011-March/055634.html
- http://secunia.com/advisories/43429
- http://secunia.com/advisories/43702
- 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