CVE-2018-16657
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.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (3.58%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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 3.0
- 9.8 CRITICALCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 3.58% probability · 89th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-476
- Affected
- debian/debian linux · kamailio/kamailio
- Source
- cve@mitre.org
References
- https://lists.debian.org/debian-lts-announce/2018/09/msg00013.htmlMailing List, Third Party Advisory
- https://skalatan.de/blog/advisory-hw-2018-06Exploit, Patch, Third Party Advisory
- https://www.debian.org/security/2018/dsa-4292Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2018/09/msg00013.htmlMailing List, Third Party Advisory
- https://skalatan.de/blog/advisory-hw-2018-06Exploit, Patch, Third Party Advisory
- https://www.debian.org/security/2018/dsa-4292Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.