Vulnerability in Digium Asterisk
CVE-2010-0685
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.
EPSS: 0.014 (69.3th percentile) — read the EPSS interpretation.
Affected products
- Digium Asterisk — versions 1.2.19, 1.4.11, 1.2.23
- N/a — versions n/a
References
- cve@mitre.org (x_refsource_CONFIRM, Exploit, Vendor Advisory)
- cve@mitre.org (x_refsource_FEDORA, vendor-advisory)
- cve@mitre.org (x_refsource_SECUNIA, third-party-advisory, Vendor Advisory)
- cve@mitre.org (x_refsource_SECUNIA, third-party-advisory)
- cve@mitre.org (x_refsource_MISC)
- cve@mitre.org (mailing-list, x_refsource_BUGTRAQ)
- cve@mitre.org (vdb-entry, x_refsource_SECTRACK)
- cve@mitre.org (vdb-entry, x_refsource_VUPEN, Vendor Advisory)
- cve@mitre.org (vdb-entry, x_refsource_XF)