DEBIAN-CVE-2026-65981
- Source
- https://security-tracker.debian.org/tracker/CVE-2026-65981
- Import Source
- https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-65981.json
- JSON Data
- https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-65981
- Upstream
- Published
- 2026-07-31T21:17:31Z
- Modified
- 2026-09-14T16:00:12Z
- Severity
-
- 7.1 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:L CVSS Calculator
- Summary
- [none]
- Details
-
Coturn is a free open source implementation of TURN and STUN Server. Prior to 4.15.0, a server using --mobility authenticates a resumed REFRESH request with the resuming user's credentials but does not verify that identity against the original allocation owner, allowing an authenticated attacker who obtains a victim MOBILITY-TICKET to receive and inject relayed traffic and consume the victim's quota. In the handle_turn_refresh resume branch, the victim allocation (orig_ss) is located solely by the attacker-controlled mobile id, and credentials are only adopted (via copy_auth_parameters) when the resuming session is unauthenticated. Because the attacker's session already has hmackey_set set to 1 from its own prior authentication (which is never reset for long-term-credential sessions), the credential copy is skipped and check_stun_auth validates the REFRESH against the attacker's own identity rather than the allocation owner's. This issue is fixed in version 4.15.0.
- References
Affected packages
Debian:12 / coturn
Package
- Name
- coturn
- Purl
- pkg:deb/debian/coturn?arch=source&distro=bookworm
Debian:13 / coturn
Package
- Name
- coturn
- Purl
- pkg:deb/debian/coturn?arch=source&distro=trixie