CVE-2020-28242
An issue was discovered in Asterisk Open Source 13.x before 13.37.1, 16.x before 16.14.1, 17.x before 17.8.1, and 18.x before 18.0.1 and Certified Asterisk before 16.8-cert5.
Does this matter?
Lower severity and a low EPSS score (1.56%). Track it; it rarely justifies an emergency change on its own.
Description
An issue was discovered in Asterisk Open Source 13.x before 13.37.1, 16.x before 16.14.1, 17.x before 17.8.1, and 18.x before 18.0.1 and Certified Asterisk before 16.8-cert5. If Asterisk is challenged on an outbound INVITE and the nonce is changed in each response, Asterisk will continually send INVITEs in a loop. This causes Asterisk to consume more and more memory since the transaction will never terminate (even if the call is hung up), ultimately leading to a restart or shutdown of Asterisk. Outbound authentication must be configured on the endpoint for this to occur.
- CVSS 3.1
- 6.5 MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 1.56% probability · 74th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-674
- Affected
- asterisk/certified asterisk · sangoma/asterisk · fedoraproject/fedora · debian/debian linux
- Source
- cve@mitre.org
References
- http://downloads.asterisk.org/pub/security/AST-2020-002.htmlVendor Advisory
- https://lists.debian.org/debian-lts-announce/2022/04/msg00001.htmlMailing List, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QUS54QTQCYKR36EIULYD544GXDA644HB/
- http://downloads.asterisk.org/pub/security/AST-2020-002.htmlVendor Advisory
- https://lists.debian.org/debian-lts-announce/2022/04/msg00001.htmlMailing List, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QUS54QTQCYKR36EIULYD544GXDA644HB/
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.