CVE-2011-1175: Null Pointer Dereference
First published: Thu Mar 17 2011(Updated: )
AST-2011-004 [1] describes a remote crash vulnerability in the Asterisk TCP/TLS server. If a remote, unauthenticated, attacker were to rapidly open and close TCP connections to services using the ast_tcptls_* API, they could cause Asterisk to crash after dereferencing a NULL pointer. This flaw affects 1.6.2.x and 1.8.x, and is corrected in 1.6.2.17.1 and 1.8.3.1. [1] <a href="http://downloads.asterisk.org/pub/security/AST-2011-004.pdf">http://downloads.asterisk.org/pub/security/AST-2011-004.pdf</a>
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Asterisk | =1.6.1-beta2 | |
| Asterisk | =1.6.1.0-rc4 | |
| Asterisk | =1.6.1.8 | |
| Asterisk | =1.6.1.7-rc1 | |
| Asterisk | =1.6.1.5-rc1 | |
| Asterisk | =1.6.1.12 | |
| Asterisk | =1.6.1.0-rc5 | |
| Asterisk | =1.6.1.3-rc1 | |
| Asterisk | =1.6.1-beta4 | |
| Asterisk | =1.6.1.15-rc2 | |
| Asterisk | =1.6.1.18-rc1 | |
| Asterisk | =1.6.1.2 | |
| Asterisk | =1.6.1.19-rc2 | |
| Asterisk | =1.6.1.6 | |
| Asterisk | =1.6.1.5 | |
| Asterisk | =1.6.1.20-rc1 | |
| Asterisk | =1.6.1.0 | |
| Asterisk | =1.6.1.18-rc2 | |
| Asterisk | =1.6.1.14 | |
| Asterisk | =1.6.1.20-rc2 | |
| Asterisk | =1.6.1-rc1 | |
| Asterisk | =1.6.1.10-rc2 | |
| Asterisk | =1.6.1.19 | |
| Asterisk | =1.6.1.12-rc1 | |
| Asterisk | =1.6.1.22 | |
| Asterisk | =1.6.1.11 | |
| Asterisk | =1.6.1.10-rc3 | |
| Asterisk | =1.6.1 | |
| Asterisk | =1.6.1.20 | |
| Asterisk | =1.6.1.9 | |
| Asterisk | =1.6.1.19-rc3 | |
| Asterisk | =1.6.1.18 | |
| Asterisk | =1.6.1.17 | |
| Asterisk | =1.6.1-beta3 | |
| Asterisk | =1.6.1.4 | |
| Asterisk | =1.6.1.10 | |
| Asterisk | =1.6.1.16 | |
| Asterisk | =1.6.1.7-rc2 | |
| Asterisk | =1.6.1.0-rc2 | |
| Asterisk | =1.6.1.21 | |
| Asterisk | =1.6.1.0-rc3 | |
| Asterisk | =1.6.1.10-rc1 | |
| Asterisk | =1.6.1.19-rc1 | |
| Asterisk | =1.6.1.13 | |
| Asterisk | =1.6.1.13-rc1 | |
| Asterisk | =1.6.1.1 | |
| Asterisk | =1.6.1-beta1 | |
| Asterisk | =1.6.2.0-rc3 | |
| Asterisk | =1.6.2.0-rc2 | |
| Asterisk | =1.6.2.1 | |
| Asterisk | =1.6.2.0-rc4 | |
| Asterisk | =1.6.2.4 | |
| Asterisk | =1.6.2.6 | |
| Asterisk | =1.6.2.0-rc5 | |
| Asterisk | =1.6.2.0-rc7 | |
| Asterisk | =1.6.2.16-rc1 | |
| Asterisk | =1.6.2.17-rc1 | |
| Asterisk | =1.6.2.1-rc1 | |
| Asterisk | =1.6.2.16 | |
| Asterisk | =1.6.2.15-rc1 | |
| Asterisk | =1.6.2.17 | |
| Asterisk | =1.6.2.6-rc1 | |
| Asterisk | =1.6.2.2 | |
| Asterisk | =1.6.2.0-rc8 | |
| Asterisk | =1.6.2.3-rc2 | |
| Asterisk | =1.6.2.17-rc3 | |
| Asterisk | =1.6.2.16.1 | |
| Asterisk | =1.6.2.0 | |
| Asterisk | =1.6.2.17-rc2 | |
| Asterisk | =1.6.2.5 | |
| Asterisk | =1.6.2.0-rc6 | |
| Asterisk | =1.6.2.6-rc2 | |
| Asterisk | =1.8.3-rc3 | |
| Asterisk | =1.8.3 | |
| 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 | =1.8.0-rc5 | |
| Asterisk | =1.8.0-beta3 | |
| Asterisk | =1.8.0-beta5 | |
| Asterisk | =1.8.0-rc2 | |
| Asterisk | =1.8.3-rc2 | |
| Asterisk | =1.8.2.3 | |
| 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 | =1.8.0-beta1 | |
| Asterisk | =1.8.0-rc4 |
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Reference Links
- http://openwall.com/lists/oss-security/2011/03/17/5
- http://www.securityfocus.com/bid/46898
- http://www.vupen.com/english/advisories/2011/0686
- https://bugzilla.redhat.com/show_bug.cgi?id=688678
- http://lists.fedoraproject.org/pipermail/package-announce/2011-March/056945.html
- http://securitytracker.com/id?1025224
- http://openwall.com/lists/oss-security/2011/03/21/12
- http://downloads.asterisk.org/pub/security/AST-2011-004.html
- http://www.vupen.com/english/advisories/2011/0790
- http://lists.fedoraproject.org/pipermail/package-announce/2011-March/057156.html
- http://lists.fedoraproject.org/pipermail/package-announce/2011-March/057163.html
- http://www.debian.org/security/2011/dsa-2225
- https://exchange.xforce.ibmcloud.com/vulnerabilities/66140
- http://downloads.asterisk.org/pub/security/AST-2011-004.pdf
- https://access.redhat.com/security/cve/CVE-2011-1175
Frequently Asked Questions
What is the severity of CVE-2011-1175?
CVE-2011-1175 is classified as a high severity vulnerability due to its potential to cause a denial of service by crashing the Asterisk server.
How do I fix CVE-2011-1175?
To fix CVE-2011-1175, upgrade your Asterisk installation to the latest version that addresses this vulnerability.
Which versions of Asterisk are affected by CVE-2011-1175?
CVE-2011-1175 affects multiple versions of Asterisk, including versions 1.6.1.0-beta2 to 1.6.1.22.
What type of vulnerability is CVE-2011-1175?
CVE-2011-1175 is a remote crash vulnerability caused by rapid opening and closing of TCP connections.
Can CVE-2011-1175 be exploited remotely?
Yes, CVE-2011-1175 can be exploited remotely by an unauthenticated attacker.
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