Buffer overflow in Digium Asterisk
CVE-2017-16671
A Buffer Overflow issue was discovered in Asterisk Open Source 13 before 13.18.1, 14 before 14.7.1, and 15 before 15.1.1 and Certified Asterisk 13.13 before 13.13-cert7. No size checking is done when setting the user field for Party B on a CDR. Thus, it is possible for someone to use an arbitrarily large string and write past the end of the user field storage buffer. NOTE: this is different from CVE-2017-7617, which was only about the Party A buffer.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.033 (88.2th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 88th percentile — 88.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.033 · newest: 0.033 · change: 0.000
Affected products
- Digium Asterisk
- Digium Certified Asterisk — versions 13.13.0
Weakness classification (CWE)
References
- www.securityfocus.com/bid/101760 (VDB Entry, Third Party Advisory, vdb-entry)
- downloads.digium.com/pub/security/AST-2017-010.html (Vendor Advisory)
- security.gentoo.org/glsa/201811-11 (vendor-advisory)
- www.debian.org/security/2017/dsa-4076 (vendor-advisory)
- issues.asterisk.org/jira/browse/ASTERISK-27337 (Issue Tracking, Vendor Advisory)
Frequently asked questions
- What is CVE-2017-16671?
- CVE-2017-16671 is a high-severity vulnerability in Digium Asterisk, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 8.8/10. Published 2017-11-09.
- How severe is CVE-2017-16671?
- High severity. CVSS v3 base score is 8.8 out of 10.