CVE-2018-16657

Published: 7 September 2018

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.

Priority

Cvss 3 Severity Score

9.8

Score breakdown

Status

Package	Release	Status
kamailio Launchpad, Ubuntu, Debian	bionic	Released (5.1.2-1ubuntu2+esm1) Available with Ubuntu Pro
	cosmic	Ignored (end of life)
	disco	Not vulnerable (5.2.1-1)
	eoan	Not vulnerable (5.2.3-1)
	focal	Not vulnerable (5.2.3-1)
	groovy	Not vulnerable (5.2.3-1)
	hirsute	Not vulnerable (5.2.3-1)
	impish	Not vulnerable (5.2.3-1)
	jammy	Not vulnerable (5.2.3-1)
	kinetic	Not vulnerable (5.2.3-1)
	lunar	Not vulnerable (5.2.3-1)
	trusty	Does not exist (trusty was needs-triage)
	upstream	Released (5.1.4-1)
	xenial	Released (4.3.4-1.1ubuntu2.1+esm1) Available with Ubuntu Pro

Severity score breakdown

Parameter	Value
Base score	9.8
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality	High
Integrity impact	High
Availability impact	High
Vector	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

Bugs

http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=908324

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