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CVE-2018-16657 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:9.8 CRITICALVector:CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://lists.debian.org/debian-lts-announce/2018/09/msg00013.html	CVE	Mailing ListThird Party Advisory
https://skalatan.de/blog/advisory-hw-2018-06	CVE	ExploitPatchThird Party Advisory
https://www.debian.org/security/2018/dsa-4292	CVE	Third Party Advisory
https://lists.debian.org/debian-lts-announce/2018/09/msg00013.html	[email protected]	Mailing ListThird Party Advisory
https://skalatan.de/blog/advisory-hw-2018-06	[email protected]	ExploitPatchThird Party Advisory
https://www.debian.org/security/2018/dsa-4292	[email protected]	Third Party Advisory

see all 6 references

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-476	NULL Pointer Dereference	[email protected]

Affected Products

Product	Versions
debian debian linux	8.0 9.0
CPE cpe:2.3:o:debian:debian_linux:8.0:::::::* cpe:2.3:o:debian:debian_linux:9.0:::::::* Remediation No remediation found in references.
kamailio kamailio	< 5.0.7 >= 5.1.0, < 5.1.4
CPE cpe:2.3:a:kamailio:kamailio:::::::: Remediation No remediation found in references.

Change History

7 change records found show changes

Date	Action	Recorded By
Jun 17, 2026	CVE Modified	[email protected]
Nov 21, 2024	CVE Modified	CVE
May 14, 2024	CVE Modified	[email protected]
Aug 24, 2020	CWE Remap	[email protected]
Nov 15, 2018	Initial Analysis	[email protected]
Sep 13, 2018	CVE Modified	[email protected]
Sep 12, 2018	CVE Modified	[email protected]