CVE-2011-2665: Null Pointer Dereference
First published: Wed Jul 06 2011(Updated: )
reqresp_parser.c in the SIP channel driver in Asterisk Open Source 1.8.x before 1.8.4.3 allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via a SIP packet with a Contact header that lacks a < (less than) character.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Asterisk | =1.8.3-rc3 | |
| Asterisk | =1.8.3 | |
| Asterisk | =1.8.2.4 | |
| Asterisk | =1.8.0-beta2 | |
| Asterisk | =1.8.3-rc1 | |
| Asterisk | =1.8.1 | |
| Asterisk | =1.8.1.2 | |
| Asterisk | =1.8.0-beta4 | |
| Asterisk | =1.8.4-rc1 | |
| Asterisk | =1.8.0-rc5 | |
| Asterisk | =1.8.3.1 | |
| Asterisk | =1.8.0-beta3 | |
| Asterisk | =1.8.0-beta5 | |
| Asterisk | =1.8.4 | |
| Asterisk | =1.8.3.2 | |
| Asterisk | =1.8.0-rc2 | |
| Asterisk | =1.8.3-rc2 | |
| Asterisk | =1.8.4.2 | |
| Asterisk | =1.8.2.3 | |
| Asterisk | =1.8.3.3 | |
| Asterisk | =1.8.4-rc2 | |
| Asterisk | =1.8.2.1 | |
| Asterisk | =1.8.1-rc1 | |
| Asterisk | =1.8.0 | |
| Asterisk | =1.8.0-rc3 | |
| Asterisk | =1.8.1.1 | |
| Asterisk | =1.8.2 | |
| Asterisk | =1.8.2.2 | |
| Asterisk | =1.8.4-rc3 | |
| Asterisk | =1.8.0-beta1 | |
| Asterisk | =1.8.0-rc4 | |
| Asterisk | =1.8.4.1 |
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Reference Links
- http://downloads.asterisk.org/pub/security/AST-2011-009.html
- http://secunia.com/advisories/45048
- http://downloads.asterisk.org/pub/security/AST-2011-009-1.8.diff
- http://www.debian.org/security/2011/dsa-2276
- http://secunia.com/advisories/45201
- http://secunia.com/advisories/45239
- http://lists.fedoraproject.org/pipermail/package-announce/2011-July/062628.html
Frequently Asked Questions
What is the severity of CVE-2011-2665?
CVE-2011-2665 is classified as a denial of service vulnerability which can lead to daemon crashes.
How do I fix CVE-2011-2665?
To fix CVE-2011-2665, upgrade Asterisk to version 1.8.4.3 or later.
What systems are affected by CVE-2011-2665?
CVE-2011-2665 affects various versions of Asterisk 1.8.x prior to 1.8.4.3.
What kind of attack does CVE-2011-2665 enable?
CVE-2011-2665 enables remote attackers to send a malformed SIP packet causing a denial of service.
Is CVE-2011-2665 exploitability easy or difficult?
The exploitability of CVE-2011-2665 is considered easy due to the nature of the vulnerability affecting SIP packets.
- agent/type
- collector/mitre-cve
- source/MITRE
- agent/last-modified-date
- agent/author
- agent/remedy
- agent/severity
- agent/references
- agent/weakness
- agent/description
- agent/first-publish-date
- agent/event
- agent/source
- collector/nvd-historical
- agent/software-canonical-lookup-request
- collector/nvd-index
- agent/softwarecombine
- agent/tags
- vendor/digium
- canonical/asterisk
- version/asterisk/1.8.3-rc3
- version/asterisk/1.8.3
- version/asterisk/1.8.2.4
- version/asterisk/1.8.0-beta2
- version/asterisk/1.8.3-rc1
- version/asterisk/1.8.1
- version/asterisk/1.8.1.2
- version/asterisk/1.8.0-beta4
- version/asterisk/1.8.4-rc1
- version/asterisk/1.8.0-rc5
- version/asterisk/1.8.3.1
- version/asterisk/1.8.0-beta3
- version/asterisk/1.8.0-beta5
- version/asterisk/1.8.4
- version/asterisk/1.8.3.2
- version/asterisk/1.8.0-rc2
- version/asterisk/1.8.3-rc2
- version/asterisk/1.8.4.2
- version/asterisk/1.8.2.3
- version/asterisk/1.8.3.3
- version/asterisk/1.8.4-rc2
- version/asterisk/1.8.2.1
- version/asterisk/1.8.1-rc1
- version/asterisk/1.8.0
- version/asterisk/1.8.0-rc3
- version/asterisk/1.8.1.1
- version/asterisk/1.8.2
- version/asterisk/1.8.2.2
- version/asterisk/1.8.4-rc3
- version/asterisk/1.8.0-beta1
- version/asterisk/1.8.0-rc4
- version/asterisk/1.8.4.1