CVE-2009-0871
The SIP channel driver in Asterisk Open Source 1.4.22, 1.4.23, and 1.4.23.1; 1.6.0 before 1.6.0.6; 1.6.1 before 1.6.1.0-rc2; and Asterisk…
- 3.5LowCVSS base score
- 2.6%Exploitation in 30 daysEPSS · top 15% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
The SIP channel driver in Asterisk Open Source 1.4.22, 1.4.23, and 1.4.23.1; 1.6.0 before 1.6.0.6; 1.6.1 before 1.6.1.0-rc2; and Asterisk Business Edition C.2.3, with the pedantic option enabled, allows remote authenticated users to cause a denial of service (crash) via a SIP INVITE request without any headers, which triggers a NULL pointer dereference in the (1) sip_uri_headers_cmp and (2) sip_uri_params_cmp functions.
Timeline
ID reserved
By mitre
Published
- 15 years later
· 15 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | Low3.5 | AV:N/AC:M/Au:S/C:N/I:N/A:P |
- EPSS (exploitation in 30 days)
- 2.6% · top 15% of all CVEs (10 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Low 3.5.
Affected products
n/a
- affected n/a
References
9
- 52568 (opens in a new tab)vdb-entryx_refsource_OSVDBx_transferred
- 34070 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- 1021834 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_transferred
- 20090310 AST-2009-002: Remote Crash Vulnerability in SIP channel driver (opens in a new tab)mailing-listx_refsource_BUGTRAQx_transferred
- http://bugs.digium.com/view.php?id=14417 (opens in a new tab)x_refsource_CONFIRMx_transferred
- http://bugs.digium.com/view.php?id=13547 (opens in a new tab)x_refsource_CONFIRMx_transferred
- http://downloads.digium.com/pub/security/AST-2009-002.html (opens in a new tab)x_refsource_CONFIRMx_transferred
- ADV-2009-0667 (opens in a new tab)vdb-entryx_refsource_VUPENx_transferred
- 34229 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2009-0868 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2009-0871)Record last updated .