Buffer overflow in Digium Asterisk
CVE-2011-2529
chan_sip.c in the SIP channel driver in Asterisk Open Source 1.6.x before 1.6.2.18.1 and 1.8.x before 1.8.4.3 does not properly handle '\0' characters in SIP packets, which allows remote attackers to cause a denial of service (memory corruption) or possibly have unspecified other impact via a crafted packet.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v2 metric
CVSS v2 base score 5.0 (Medium). Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P. This CVE predates CVSS v3 and has no v3 score from NVD.
EPSS exploit prediction
EPSS: 0.043 (90.8th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 91st percentile — 90.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.043 · newest: 0.043 · change: 0.000
Affected products
- Digium Asterisk — versions 1.6.0, 1.6.0.1, 1.6.0.2
Weakness classification (CWE)
References
- exchange.xforce.ibmcloud.com/vulnerabilities/68203 (vdb-entry)
- www.osvdb.org/73307 (vdb-entry)
- www.securityfocus.com/bid/48431 (vdb-entry)
- downloads.asterisk.org/pub/security/AST-2011-008.html (Vendor Advisory)
- secunia.com/advisories/45239 (third-party-advisory)
- downloads.asterisk.org/pub/security/AST-2011-008.diff (Patch)
- www.debian.org/security/2011/dsa-2276 (vendor-advisory)
- lists.fedoraproject.org/pipermail/package-announce/2011-July/062628.html (vendor-advisory)
- secunia.com/advisories/45048 (Vendor Advisory, third-party-advisory)
- securitytracker.com/id (vdb-entry)