CVE-2017-15650: musl-libc musl

Vulnerability summary

CVE-2017-15650 is a high (CVSS 7.5) vulnerability in musl-libc musl. EPSS estimates a 2.02% chance of exploitation in the next 30 days, higher than 80.7% of scored vulnerabilities.

Timeline

1. 19-10-2017
   PublishedVulnerability first disclosed.
2. 05-08-2024
   Last modifiedVulnerability information updated.

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.

• CWE-119Improper Restriction of Operations within the Bounds of a Memory BufferThe product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.