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FreeBSD : Erlang/OTP -- OCSP responder certificate accepted after expiry in public_key (9357d6fb-5a54-11f1-b886-4c526214c986)

medium Nessus Plugin ID 317387

Synopsis

The remote FreeBSD host is missing one or more security-related updates.

Description

The version of FreeBSD installed on the remote host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the 9357d6fb-5a54-11f1-b886-4c526214c986 advisory.

 https://github.com/erlang/otp/security/advisories/GHSA-cjxj-wj6x-3fff reports:
 Erlang/OTP's public_key application fails to validate the validity period of OCSP responder certificates during response verification. An attacker possessing an expired OCSP responder's private key can forge responses that the system accepts as valid, potentially allowing acceptance of revoked TLS certificates in OCSP stapling scenarios or authentication bypass in applications using the public_key:pkix_ocsp_validate/5 API directly.

Tenable has extracted the preceding description block directly from the FreeBSD security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Update the affected packages.

See Also

https://github.com/erlang/otp/security/advisories/GHSA-cjxj-wj6x-3fff

http://www.nessus.org/u?165bccfc

Plugin Details

Severity: Medium

ID: 317387

File Name: freebsd_pkg_9357d6fb5a5411f1b8864c526214c986.nasl

Version: 1.2

Type: Local

Published: 5/28/2026

Updated: 5/29/2026

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.0

CVSS v2

Risk Factor: Medium

Base Score: 5.8

Temporal Score: 4.3

Vector: CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:N

CVSS Score Source: CVE-2026-42791

CVSS v3

Risk Factor: High

Base Score: 7.4

Temporal Score: 6.4

Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

CVSS v4

Risk Factor: Medium

Base Score: 6.3

Threat Score: 1.7

Threat Vector: CVSS:4.0/E:U

Vector: CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:L/SI:L/SA:N

Vulnerability Information

CPE: p-cpe:/a:freebsd:freebsd:erlang-runtime28, cpe:/o:freebsd:freebsd, p-cpe:/a:freebsd:freebsd:erlang-runtime27, p-cpe:/a:freebsd:freebsd:erlang-runtime29

Required KB Items: Host/local_checks_enabled, Host/FreeBSD/release, Host/FreeBSD/pkg_info

Exploit Ease: No known exploits are available

Patch Publication Date: 5/28/2026

Vulnerability Publication Date: 5/27/2026

Reference Information

CVE: CVE-2026-42791

IAVA: 2026-A-0522