CVE-2013-2686
What it is
main/http.c in the HTTP server in Asterisk Open Source 1.8.x before 1.8.20.2, 10.x before 10.12.2, and 11.x before 11.2.2; Certified Asterisk 1.8.15 before 1.8.15-cert2; and Asterisk Digiumphones 10.x-digiumphones before 10.12.2-digiumphones does not properly restrict Content-Length values, which allows remote attackers to conduct stack-consumption attacks and cause a denial of service (daemon crash) via a crafted HTTP POST request. NOTE: this vulnerability exists because of an incorrect fix for CVE-2012-5976.
At a glance
- Exploitability
- Can be exploited over the network without logging in. Limited direct impact.
- Exploit odds
- 2.1% 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: 2.1% in the next 30 days (EPSS).
- Severity: 5.0 MEDIUM (CVSS).
- Fix: a patch or advisory is linked.
Details
- Published
- Last modified
- Exploit probability
- 2.1% · EPSS, next 30 days
- Weakness
- CWE-119 · Buffer errors
- Record status
- Modified
Affected
- Asterisk Open Source 1.8.0
- Asterisk Open Source 1.8.1
- Asterisk Open Source 1.8.1.1
- Asterisk Open Source 1.8.1.2
- Asterisk Open Source 1.8.2
- Asterisk Open Source 1.8.2.1
- Asterisk Open Source 1.8.2.2
- Asterisk Open Source 1.8.2.3
Attack profile CVSS 2.0 · 5.0
- Attack vector
- Network
- Complexity
- Low
- Authentication
- None
- Confidentiality
- None
- Integrity
- None
- Availability
- Partial
Raw vector
AV:N/AC:L/Au:N/C:N/I:N/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-2013-2686.md and follow it. Check whether this project is affected by CVE-2013-2686. 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-2013-002.html
- http://downloads.asterisk.org/pub/security/AST-2013-002.html
References
- http://downloads.asterisk.org/pub/security/AST-2013-002.html
- http://telussecuritylabs.com/threats/show/TSL20130327-01
- https://issues.asterisk.org/jira/browse/ASTERISK-20967
- http://downloads.asterisk.org/pub/security/AST-2013-002.html
- http://telussecuritylabs.com/threats/show/TSL20130327-01
- https://issues.asterisk.org/jira/browse/ASTERISK-20967