CVE-2017-15650

Severity: high (CVSS 7.5 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.0% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2017-10-19 · updated 2026-06-17
Weakness: CWE-119

Description

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.

Affected products

musl-libc musl: through 1.1.6

References

http://git.musl-libc.org/cgit/musl/commit/?id=45ca5d3fcb6f874bf5ba55d0e9651cef68515395
http://git.musl-libc.org/cgit/musl/tree/WHATSNEW
http://openwall.com/lists/oss-security/2017/10/19/5
http://git.musl-libc.org/cgit/musl/commit/?id=45ca5d3fcb6f874bf5ba55d0e9651cef68515395
http://git.musl-libc.org/cgit/musl/tree/WHATSNEW
http://openwall.com/lists/oss-security/2017/10/19/5

Get alerted when CVE-2017-15650 or the next vulnerability affects your stack