CVE-2018-14767: Debian Linux

Critical severity, CVSS 9.8. EPSS: 29.3% chance of exploitation in the next 30 days.

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.

Affected products

• Debian Debian Linux: version 8.0 only; version 9.0 only
• Kamailio Kamailio: before 5.0.7 (fixed in 5.0.7); from 5.1.0, before 5.1.4 (fixed in 5.1.4)

Published 2018-07-31. Last modified 2026-06-17.