Description
A vulnerability was found that the response times to malformed ciphertexts in RSA-PSK ClientKeyExchange differ from response times of ciphertexts with correct PKCS#1 v1.5 padding.
Published: 2023-11-28
Score: 5.9 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

No analysis available yet.

Remediation

Vendor Workaround

To address the issue found upgrade to GnuTLS 3.8.2 or later versions.

Tracking

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Advisories
Source ID Title
Debian DLA Debian DLA DLA-3660-1 gnutls28 security update
Debian DLA Debian DLA DLA-3740-1 gnutls28 security update
EUVD EUVD EUVD-2023-58248 A vulnerability was found that the response times to malformed ciphertexts in RSA-PSK ClientKeyExchange differ from response times of ciphertexts with correct PKCS#1 v1.5 padding.
Ubuntu USN Ubuntu USN USN-6499-1 GnuTLS vulnerability
Ubuntu USN Ubuntu USN USN-6499-2 GnuTLS vulnerability
History

Wed, 25 Mar 2026 20:15:00 +0000

Type Values Removed Values Added
First Time appeared Debian
Debian debian Linux
CPEs cpe:2.3:a:gnu:gnutls:1.5.0:*:*:*:*:*:*:* cpe:2.3:a:gnu:gnutls:*:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
Vendors & Products Debian
Debian debian Linux

Wed, 25 Feb 2026 19:00:00 +0000

Type Values Removed Values Added
Weaknesses CWE-208

Tue, 04 Nov 2025 20:30:00 +0000

Type Values Removed Values Added
References

Wed, 16 Jul 2025 13:45:00 +0000

Type Values Removed Values Added
Metrics epss

{'score': 0.00561}

epss

{'score': 0.00577}


Fri, 22 Nov 2024 12:00:00 +0000


Mon, 16 Sep 2024 13:30:00 +0000


Subscriptions

Debian Debian Linux
Fedoraproject Fedora
Gnu Gnutls
Redhat Enterprise Linux Linux Logging Openshift Data Foundation Rhel Eus
cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2026-02-25T18:19:40.648Z

Reserved: 2023-11-07T08:05:10.875Z

Link: CVE-2023-5981

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Analyzed

Published: 2023-11-28T12:15:07.040

Modified: 2026-03-25T20:01:09.507

Link: CVE-2023-5981

cve-icon Redhat

Severity : Moderate

Publid Date: 2023-11-15T00:00:00Z

Links: CVE-2023-5981 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses