Signature Detail
Short Name |
VOIP:SIP:LIMITS:CSEQ-OF |
|---|---|
Severity |
High |
Recommended |
No |
Recommended Action |
Drop Packet |
Category |
VOIP |
Keywords |
CSEQ Too Long |
Release Date |
2007/07/18 |
Update Number |
1213 |
Supported Platforms |
idp-4.0.110090709+, isg-3.1.134269+, j-series-9.5+, mx-9.4+, srx-9.2+, srx-branch-9.4+, vsrx-12.1+ |
SIP: CSEQ Too Long
This signature triggers on traffic containing SIP CSeq: headers longer than 32 bytes, which can indicate a potential issue.
Extended Description
Asterisk is prone to multiple remote denial-of-service vulnerabilities. Successful exploits can crash the SIP channel driver, resulting in denial-of-service conditions for legitimate users. The issues affect the Asterisk 1.6.1. NOTE: Other versions may also include the affected code but may not be exploitable because they do not allow SIP packets to exceed 1500 bytes total.
Affected Products
- Asterisk 1.6.1
- Asterisk 1.6.2
- Asterisk 1.6.3
- Gentoo Linux
- Red Hat Fedora 10
References
- BugTraq: 36015
- CVE: CVE-2009-2726
- URL: http://www.ietf.org/rfc/rfc3261.txt