CVE-2018-12227
However, if an endpoint is not identified, then a 401 unauthorized response is sent.
Does this matter?
Lower severity and a low EPSS score (3.36%). Track it; it rarely justifies an emergency change on its own.
Description
An issue was discovered in Asterisk Open Source 13.x before 13.21.1, 14.x before 14.7.7, and 15.x before 15.4.1 and Certified Asterisk 13.18-cert before 13.18-cert4 and 13.21-cert before 13.21-cert2. When endpoint specific ACL rules block a SIP request, they respond with a 403 forbidden. However, if an endpoint is not identified, then a 401 unauthorized response is sent. This vulnerability just discloses which requests hit a defined endpoint. The ACL rules cannot be bypassed to gain access to the disclosed endpoints.
- CVSS 3.0
- 5.3 MEDIUMCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
- EPSS
- 3.36% probability · 89th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-200
- Affected
- digium/asterisk · digium/certified asterisk · debian/debian linux
- Source
- cve@mitre.org
EPSS 3.4% since 27 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://downloads.asterisk.org/pub/security/AST-2018-008.htmlVendor Advisory
- http://www.securityfocus.com/bid/104455Third Party Advisory, VDB Entry
- https://issues.asterisk.org/jira/browse/ASTERISK-27818Patch, Vendor Advisory
- https://security.gentoo.org/glsa/201811-11Third Party Advisory
- https://www.debian.org/security/2018/dsa-4320Third Party Advisory
- http://downloads.asterisk.org/pub/security/AST-2018-008.htmlVendor Advisory
- http://www.securityfocus.com/bid/104455Third Party Advisory, VDB Entry
- https://issues.asterisk.org/jira/browse/ASTERISK-27818Patch, Vendor Advisory
- https://security.gentoo.org/glsa/201811-11Third Party Advisory
- https://www.debian.org/security/2018/dsa-4320Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.