CVE-2017-15650

Source
Severity Critical
Remote Yes
Type Arbitrary code execution
Description
A stack-based buffer overflow has been found in the DNS response parsing code of musl libc <= 1.1.16. When an application makes a request via getaddrinfo for both IPv4 and IPv6 results (AF_UNSPEC), an attacker who controls or can spoof the nameservers configured in resolv.conf can reply to both the A and AAAA queries with A results. Since A records are smaller than AAAA records, it's possible to fit more addresses than the precomputed bound, and a buffer overflow occurs.
Group Package Affected Fixed Severity Status Ticket
AVG-457 musl 1.1.16-2 1.1.17-1 Critical Fixed
Date Advisory Group Package Severity Description
21 Oct 2017 ASA-201710-28 AVG-457 musl Critical arbitrary code execution
References
http://seclists.org/oss-sec/2017/q4/107
https://git.musl-libc.org/cgit/musl/commit/?id=45ca5d3fcb6f874bf5ba55d0e9651cef68515395