In the pjsip channel driver (res_pjsip) in Asterisk 13.x before 13.17.1 and 14.x before 14.6.1, a carefully crafted tel URI in a From, To, or Contact header could cause Asterisk to crash.
Upstream Patch 2/2:
Asterisk 13 - http://downloads.asterisk.org/pub/security/AST-2017-006
Asterisk 14 - http://downloads.asterisk.org/pub/security/AST-2017-006
Next time please update the summary vice an ambiguous blocker that requires tracing.
Added to an existing GLSA request
Gentoo Security Padawan
This issue was resolved and addressed in
GLSA 201710-29 at https://security.gentoo.org/glsa/201710-29
by GLSA coordinator Aaron Bauman (b-man).