Vulnerability Description
In Kamailio before 5.0.7 and 5.1.x before 5.1.4, a crafted SIP message with an invalid Via header causes a segmentation fault and crashes Kamailio. The reason is missing input validation in the crcitt_string_array core function for calculating a CRC hash for To tags. (An additional error is present in the check_via_address core function: this function also misses input validation.) This could result in denial of service and potentially the execution of arbitrary code.
CVSS Score
CRITICAL
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Debian | Debian Linux | 8.0 |
| Kamailio | Kamailio | < 5.0.7 |
Related Weaknesses (CWE)
References
- https://lists.debian.org/debian-lts-announce/2018/09/msg00013.htmlMailing ListThird Party Advisory
- https://skalatan.de/blog/advisory-hw-2018-06ExploitPatchThird Party Advisory
- https://www.debian.org/security/2018/dsa-4292Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2018/09/msg00013.htmlMailing ListThird Party Advisory
- https://skalatan.de/blog/advisory-hw-2018-06ExploitPatchThird Party Advisory
- https://www.debian.org/security/2018/dsa-4292Third Party Advisory
FAQ
What is CVE-2018-16657?
CVE-2018-16657 is a vulnerability with a CVSS score of 9.8 (CRITICAL). In Kamailio before 5.0.7 and 5.1.x before 5.1.4, a crafted SIP message with an invalid Via header causes a segmentation fault and crashes Kamailio. The reason is missing input validation in the crcitt...
How severe is CVE-2018-16657?
CVE-2018-16657 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2018-16657?
Check the references section above for vendor advisories and patch information. Affected products include: Debian Debian Linux, Kamailio Kamailio.