Information disclosure in Digium Asterisk
CVE-2018-12227
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.
Vulnerability class: Information Disclosure
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.
EPSS exploit prediction
EPSS: 0.035 (88.7th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 89th percentile — 88.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.035 · newest: 0.035 · change: 0.000
Affected products
- Digium Asterisk
- Digium Certified Asterisk — versions 13.18, 13.21
- Debian Linux — versions 9.0
Weakness classification (CWE)
References
- www.debian.org/security/2018/dsa-4320 (vendor-advisory, Third Party Advisory)
- issues.asterisk.org/jira/browse/ASTERISK-27818 (Patch, Vendor Advisory)
- downloads.asterisk.org/pub/security/AST-2018-008.html (Vendor Advisory)
- www.securityfocus.com/bid/104455 (VDB Entry, Third Party Advisory, vdb-entry)
- security.gentoo.org/glsa/201811-11 (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2018-12227?
- CVE-2018-12227 is a medium-severity vulnerability in Digium Asterisk, classified under Information Disclosure. CVSS score: 5.3/10. Published 2018-06-12.
- How severe is CVE-2018-12227?
- Medium severity. CVSS v3 base score is 5.3 out of 10.