Description (CNA)
The design of the dialplan functionality in Asterisk Open Source 1.2.x, 1.4.x, and 1.6.x; and Asterisk Business Edition B.x.x and C.x.x, when using the ${EXTEN} channel variable and wildcard pattern matches, allows context-dependent attackers to inject strings into the dialplan using metacharacters that are injected when the variable is expanded, as demonstrated using the Dial application to process a crafted SIP INVITE message that adds an unintended outgoing channel leg. NOTE: it could be argued that this is not a vulnerability in Asterisk, but a class of vulnerabilities that can occur in any program that uses this feature without the associated filtering functionality that is already available.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| n/a / n/a | affected n/a |
CWE
No CWE identifiers supplied.
References
- http://svn.asterisk.org/svn/asterisk/branches/1.2/README-SERIOUSLY.bestpractices.txt
- http://secunia.com/advisories/39096
- http://www.securitytracker.com/id?1023637
- http://lists.fedoraproject.org/pipermail/package-announce/2010-March/037679.html
- http://www.securityfocus.com/archive/1/509608/100/0/threaded
- http://secunia.com/advisories/38641
- http://downloads.digium.com/pub/security/AST-2010-002.html
- http://www.vupen.com/english/advisories/2010/0439
- https://exchange.xforce.ibmcloud.com/vulnerabilities/56397
ADP enrichment
No English description supplied.
- http://svn.asterisk.org/svn/asterisk/branches/1.2/README-SERIOUSLY.bestpractices.txt
- http://secunia.com/advisories/39096
- http://www.securitytracker.com/id?1023637
- http://lists.fedoraproject.org/pipermail/package-announce/2010-March/037679.html
- http://www.securityfocus.com/archive/1/509608/100/0/threaded
- http://secunia.com/advisories/38641
- http://downloads.digium.com/pub/security/AST-2010-002.html
- http://www.vupen.com/english/advisories/2010/0439
- https://exchange.xforce.ibmcloud.com/vulnerabilities/56397