DEBIAN-CVE-2026-14957
- Source
- https://security-tracker.debian.org/tracker/CVE-2026-14957
- Import Source
- https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-14957.json
- JSON Data
- https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-14957
- Upstream
- Published
- 2026-09-02T03:16:47Z
- Modified
- 2026-09-10T08:47:25Z
- Severity
-
- 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
- Summary
- [none]
- Details
-
In FIPS mode, Libreswan's add_decoded_cert() function calls CERT_ExtractPublicKey() and asserts that the result is not NULL. However, CERT_ExtractPublicKey() returns NULL when public key extraction fails, for example if the RSA exponent is set to 0. A remote attacker can send a malformed X.509 certificate in a CERT payload to trigger the assertion, causing the pluto daemon to abort and restart. Continued exploitation causes a denial of service. No remote code execution is possible. Both IKEv1 and IKEv2 are affected. The vulnerability is only exploitable when both the OS and libreswan are running in FIPS mode and at least one CA certificate is loaded. The CERT payload is processed before peer authentication, so no credentials are needed to exploit this. Configurations using only PreSharedKey (PSK) authentication with no CA certificates loaded in the NSS database are not vulnerable.
- References
Affected packages
Debian:12 / libreswan
Package
- Name
- libreswan
- Purl
- pkg:deb/debian/libreswan?arch=source&distro=bookworm
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0 Unknown introduced version / All previous versions are affected
Debian:13 / libreswan
Package
- Name
- libreswan
- Purl
- pkg:deb/debian/libreswan?arch=source&distro=trixie
Debian:14 / libreswan
Package
- Name
- libreswan
- Purl
- pkg:deb/debian/libreswan?arch=source&distro=forky