| Name | CVE-2025-49832 |
| Description | Asterisk is an open source private branch exchange and telephony toolkit. In versions up to and including 18.26.2, between 20.00.0 and 20.15.0, 20.7-cert6, 21.00.0, 22.00.0 through 22.5.0, there is a remote DoS and possible RCE condition in `asterisk/res/res_stir_shaken /verification.c` that can be exploited when an attacker can set an arbitrary Identity header, or STIR/SHAKEN is enabled, with verification set in the SIP profile associated with the endpoint to be attacked. This is fixed in versions 18.26.3, 20.7-cert6, 20.15.1, 21.10.1 and 22.5.1. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| Debian Bugs | 1110317 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| asterisk (PTS) | bullseye | 1:16.28.0~dfsg-0+deb11u4 | fixed |
| bullseye (security) | 1:16.28.0~dfsg-0+deb11u7 | fixed | |
| sid | 1:22.5.2~dfsg+~cs6.15.60671435-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| asterisk | source | bullseye | (not affected) | |||
| asterisk | source | (unstable) | 1:22.5.1~dfsg+~cs6.15.60671435-1 | 1110317 |
[bullseye] - asterisk <not-affected> (Vulnerable code introduced later)
https://github.com/asterisk/asterisk/security/advisories/GHSA-mrq5-74j5-f5cr
Introduced by: https://github.com/asterisk/asterisk/commit/628f8d7a43517e5da5becda33471dc2c44841bb6 (22.0.0-pre1)
Earliest version with backport of the vulnerable code is 18.22.0-rc1
Fixed by: https://github.com/asterisk/asterisk/commit/723410e3126e2d6a6a05e89cdf0cb23f4556af3a (master)
Fixed by: https://github.com/asterisk/asterisk/commit/f8c6ad7916a9d233eb9e685365132e0435535216 (22.5.1)