CVE-2012-2947

2.6 LOW 2% exploit odds Fix listed

What it is

chan_iax2.c in the IAX2 channel driver in Certified Asterisk 1.8.11-cert before 1.8.11-cert2 and Asterisk Open Source 1.8.x before 1.8.12.1 and 10.x before 10.4.1, when a certain mohinterpret setting is enabled, allows remote attackers to cause a denial of service (daemon crash) by placing a call on hold.

At a glance

Exploitability: Can be exploited over the network without logging in. Limited direct impact.
Exploit odds: 2.3% chance of exploitation in the next 30 days (EPSS).
Fix: A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

2012-06-02 15:55 UTC PublishedDisclosed publicly on CVE.org and NVD
2026-06-16 23:42 UTC Last updatedMost recent change to the record

Why it ranks here

Exploited in the wild: no, CISA does not list it.
Exploit odds: 2.3% in the next 30 days (EPSS).
Severity: 2.6 LOW (CVSS).
Fix: a patch or advisory is linked.

Details

Published: 2012-06-02 15:55 UTC
Last modified: 2026-06-16 23:42 UTC
Exploit probability: 2.3% · EPSS, next 30 days
Weakness: CWE-284 · Improper access control
Record status: Modified

Affected

Debian Linux 6.0
Digium Asterisk 1.8.0
Digium Asterisk 1.8.1
Digium Asterisk 1.8.1.1
Digium Asterisk 1.8.1.2
Digium Asterisk 1.8.2
Digium Asterisk 1.8.2.1
Digium Asterisk 1.8.2.2

Attack profile CVSS 2.0 · 2.6

Attack vector: Network
Complexity: High
Authentication: None
Confidentiality: None
Integrity: None
Availability: Partial

Raw vector

AV:N/AC:H/Au:N/C:N/I:N/A:P

Is it in your code?

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Fix and advisories

References

NVD record · CVE.org record