VulnerabilityModified
CVE-2021-32558
If the IAX2 channel driver receives a packet that contains an unsupported media format, a crash can occur.
HIGH 7.5EPSS 9.11%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (9.11%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
An issue was discovered in Sangoma Asterisk 13.x before 13.38.3, 16.x before 16.19.1, 17.x before 17.9.4, and 18.x before 18.5.1, and Certified Asterisk before 16.8-cert10. If the IAX2 channel driver receives a packet that contains an unsupported media format, a crash can occur.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 9.11% probability · 95th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-74
- Affected
- digium/asterisk · digium/certified asterisk · debian/debian linux
- Source
- cve@mitre.org
References
- http://packetstormsecurity.com/files/163639/Asterisk-Project-Security-Advisory-AST-2021-008.htmlPatch, Third Party Advisory, VDB Entry
- http://seclists.org/fulldisclosure/2021/Jul/49Mailing List, Patch, Third Party Advisory
- https://downloads.asterisk.org/pub/security/AST-2021-008.htmlPatch, Vendor Advisory
- https://issues.asterisk.org/jira/browse/ASTERISK-29392Exploit, Issue Tracking, Patch, Vendor Advisory
- https://lists.debian.org/debian-lts-announce/2021/08/msg00005.htmlMailing List, Third Party Advisory
- https://www.debian.org/security/2021/dsa-4999Third Party Advisory
- http://packetstormsecurity.com/files/163639/Asterisk-Project-Security-Advisory-AST-2021-008.htmlPatch, Third Party Advisory, VDB Entry
- http://seclists.org/fulldisclosure/2021/Jul/49Mailing List, Patch, Third Party Advisory
- https://downloads.asterisk.org/pub/security/AST-2021-008.htmlPatch, Vendor Advisory
- https://issues.asterisk.org/jira/browse/ASTERISK-29392Exploit, Issue Tracking, Patch, Vendor Advisory
- https://lists.debian.org/debian-lts-announce/2021/08/msg00005.htmlMailing List, Third Party Advisory
- https://www.debian.org/security/2021/dsa-4999Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.