Description
A buffer overflow in res_pjsip_diversion.c in Sangoma Asterisk versions 13.38.1, 16.15.1, 17.9.1, and 18.1.1 allows remote attacker to crash Asterisk by deliberately misusing SIP 181 responses.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | asterisk | 1:16.16.1~dfsg-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | asterisk | No fix yet | — |
| Ubuntu 26.04 LTS | asterisk | No fix yet | — |
| Ubuntu 25.10 | asterisk | No fix yet | — |
| Ubuntu 24.04 LTS | asterisk | No fix yet | — |
| Ubuntu 22.04 LTS | asterisk | No fix yet | — |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 20.04 LTS | asterisk | No fix yet | — |
| Ubuntu 18.04 LTS | asterisk | No fix yet | — |
| Ubuntu Pro 16.04 LTS | asterisk | No fix yet | — |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | asterisk | 18.1.1-r0 | — |
| Alpine v3.23 | asterisk | 18.1.1-r0 | — |
| Alpine v3.22 | asterisk | 18.1.1-r0 | — |
| Alpine v3.21 | asterisk | 18.1.1-r0 | — |
| Alpine v3.20 | asterisk | 18.1.1-r0 | — |
Show 8 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | asterisk | 18.1.1-r0 | — |
| Alpine v3.18 | asterisk | 18.1.1-r0 | — |
| Alpine v3.17 | asterisk | 18.1.1-r0 | — |
| Alpine v3.16 | asterisk | 18.1.1-r0 | — |
| Alpine v3.15 | asterisk | 18.1.1-r0 | — |
| Alpine v3.14 | asterisk | 18.1.1-r0 | — |
| Alpine v3.13 | asterisk | 18.1.1-r0 | — |
| Alpine v3.12 | asterisk | 16.16.1-r0 | — |
Advisories 1
- WID-SEC-2024-3633 Asterisk: Mehrere Schwachstellen ermöglichen Denial of Service BSI CERT-Bund (WID) · Dec 8, 2024
References
- https://issues.asterisk.org/
- 20210218 AST-2021-001: Remote crash in res_pjsip_diversion mailing-list
- https://downloads.asterisk.org/pub/security/AST-2021-001.html
- https://issues.asterisk.org/jira/browse/ASTERISK-29227
- http://packetstormsecurity.com/files/161470/Asterisk-Project-Security-Advisory-AST-2021-001.html