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.
Published · last modified .
CVSS v2 metric
CVSS v2 base score 5.0 (Medium). Vector: AV:N/AC:L/Au:N/C:N/I:P/A:N. This CVE predates CVSS v3 and has no v3 score from NVD.
EPSS exploit prediction
EPSS: 0.014 (70.8th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 71st percentile — 70.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.014 · newest: 0.014 · change: -0.000
Affected products
- Digium Asterisk — versions 1.2.19, 1.4.11, 1.2.23
References
- downloads.digium.com/pub/security/AST-2010-002.html (Exploit, Vendor Advisory)
- lists.fedoraproject.org/pipermail/package-announce/2010-March/037679.html (vendor-advisory)
- secunia.com/advisories/38641 (third-party-advisory, Vendor Advisory)
- secunia.com/advisories/39096 (third-party-advisory)
- svn.asterisk.org/svn/asterisk/branches/1.2/README-SERIOUSLY.bestpractices.txt
- www.securityfocus.com/archive/1/509608/100/0/threaded (mailing-list)
- www.securitytracker.com/id (vdb-entry)
- www.vupen.com/english/advisories/2010/0439 (vdb-entry, Vendor Advisory)
- exchange.xforce.ibmcloud.com/vulnerabilities/56397 (vdb-entry)