CVE-2018-16657
kamailio - security update
9.8
CRITICAL
CVSS 3.1
EPSS 0.92%
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.
How to fix CVE-2018-16657
To remediate CVE-2018-16657, upgrade the affected package to a fixed version below.
- —upgrade to 5.1.4-1 or later
- —upgrade to 4.2.0-2+deb8u5 or later
- —upgrade to 4.4.4-2+deb9u3 or later
Is CVE-2018-16657 being exploited?
Low — EPSS is 0.9%, meaning exploitation activity has not been observed at scale.
Affected packages (3)
- from 0, < 5.1.4-1
- from 0, < 4.2.0-2+deb8u5
- from 0, < 4.4.4-2+deb9u3
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | CRITICAL9.8 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |