| Name | CVE-2019-18976 |
| Description | An issue was discovered in res_pjsip_t38.c in Sangoma Asterisk through 13.x and Certified Asterisk through 13.21-x. If it receives a re-invite initiating T.38 faxing and has a port of 0 and no c line in the SDP, a NULL pointer dereference and crash will occur. This is different from CVE-2019-18940. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DLA-2969-1 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| asterisk (PTS) | jessie, jessie (lts) | 1:11.13.1~dfsg-2+deb8u8 | fixed |
| stretch (security) | 1:13.14.1~dfsg-2+deb9u6 | fixed |
| stretch (lts), stretch | 1:13.14.1~dfsg-2+deb9u9 | fixed |
| buster | 1:16.2.1~dfsg-1+deb10u2 | fixed |
| buster (security) | 1:16.28.0~dfsg-0+deb10u4 | fixed |
| bullseye | 1:16.28.0~dfsg-0+deb11u3 | fixed |
| bullseye (security) | 1:16.28.0~dfsg-0+deb11u4 | fixed |
| sid | 1:20.6.0~dfsg+~cs6.13.40431414-2 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| asterisk | source | wheezy | (unfixed) | end-of-life | | |
| asterisk | source | jessie | (not affected) | | | |
| asterisk | source | stretch | 1:13.14.1~dfsg-2+deb9u6 | | DLA-2969-1 | |
| asterisk | source | (unstable) | 1:16.1.1~dfsg-1 | | | |
Notes
[jessie] - asterisk <not-affected> (Vulnerable code not present)
https://downloads.asterisk.org/pub/security/AST-2019-008.html
https://issues.asterisk.org/jira/browse/ASTERISK-28612
Only affects 13.x, marking first unstable upload after 13.x as fixed