PJSIP is vulnerable to Heap-based Buffer Overflow through DNS parser
Summary
PJSIP is vulnerable to Heap-based Buffer Overflow through DNS parser
Original description
The description as published by the source.
PJSIP is a free and open source multimedia communication library written in C. Versions 2.16 and below have a Heap-based Buffer Overflowvulnerability in the DNS parser's name length handler. Thisimpacts applications using PJSIP's built-in DNS resolver, such as those configured with pjsua_config.nameserver or UaConfig.nameserver in PJSUA/PJSUA2. It does not affect users who rely on the OS resolver (e.g., getaddrinfo()) by not configuring a nameserver, or those using an external resolver via pjsip_resolver_set_ext_resolver(). This issue is fixed in version 2.17. For users unable to upgrade, a workaround is to disable DNS resolution in the PJSIP config (by setting nameserver_count to zero) or to use an external resolver implementation instead.
Source: OSV.dev (Open Source Vulnerabilities) NVD GitHub Advisory OSV
Fix status by distribution
Fixed packages published by each distribution for this CVE
- Alpine Linux ALPINE-CVE-2026-32945 pjproject Fixed in: 2.17-r0
- Debian DEBIAN-CVE-2026-32945 asterisk
References
- advisory github.com
- advisory github.com
- advisory nvd.nist.gov
- patch github.com