Buffer overflow in Musl-Libc Musl
CVE-2017-15650
musl libc before 1.1.17 has a buffer overflow via crafted DNS replies because dns_parse_callback in network/lookup_name.c does not restrict the number of addresses, and thus an attacker can provide an unexpected number by sending A records in a reply to an AAAA query.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.020 (80.1th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 80th percentile — 80.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.020 · newest: 0.020 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- git.musl-libc.org/cgit/musl/commit/ (Vendor Advisory)
- git.musl-libc.org/cgit/musl/tree/WHATSNEW (Vendor Advisory)
- openwall.com/lists/oss-security/2017/10/19/5 (Mailing List, Third Party Advisory, Mitigation)
Frequently asked questions
- What is CVE-2017-15650?
- CVE-2017-15650 is a high-severity vulnerability in Musl-Libc Musl, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 7.5/10. Published 2017-10-19.
- How severe is CVE-2017-15650?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2017-15650 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.