CVE-2018-14767

moderate-risk
Published 2018-07-31

In Kamailio before 5.0.7 and 5.1.x before 5.1.4, a crafted SIP message with a double "To" header and an empty "To" tag causes a segmentation fault and crash. The reason is missing input validation in the "build_res_buf_from_sip_req" core function. This could result in denial of service and potentially the execution of arbitrary code.

Do I need to act?

~
1.1% chance of exploitation in next 30 days
EPSS score — moderate exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
+
Fix available
Upgrade to: 743c2d71beda536be3dd3b07b0f9b1d4b7e42743, b7547543f64511ca7103f21e24c839127b01a3f4
9
CVSS 9.8/10 Critical
NETWORK / LOW complexity

Affected Products (3)

Kamailio

Affected Vendors

Debian Kamailio

References (6)

Mailing List https://lists.debian.org/debian-lts-announce/2018/08/msg00018.html
Exploit https://skalatan.de/blog/advisory-hw-2018-05
Third Party Advisory https://www.debian.org/security/2018/dsa-4267
Mailing List https://lists.debian.org/debian-lts-announce/2018/08/msg00018.html
Exploit https://skalatan.de/blog/advisory-hw-2018-05
Third Party Advisory https://www.debian.org/security/2018/dsa-4267
44
/ 100
moderate-risk
Severity 32/34 · Critical
Exploitability 3/34 · Minimal
Exposure 9/34 · Low