CVE-2023-5981
MEDIUMCVSS 5.9/10EPSS 1.26%
Last modified
CVE-2023-5981 is a medium-severity vulnerability rated 5.9/10 on the CVSS scale. 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.. EPSS estimates a 1.26% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Debian | Debian Linux | 10.0 |
| Gnu | Gnutls | < 3.8.2 |
| Redhat | Linux | 8.0 |
| Redhat | Linux | 9.0 |
| Fedoraproject | Fedora | 37 |
| Fedoraproject | Fedora | 38 |
References
- https://access.redhat.com/errata/RHSA-2024:0155Third Party Advisory
- https://access.redhat.com/errata/RHSA-2024:0319Third Party Advisory
- https://access.redhat.com/errata/RHSA-2024:0399Third Party Advisory
- https://access.redhat.com/errata/RHSA-2024:0451Third Party Advisory
- https://access.redhat.com/errata/RHSA-2024:0533Third Party Advisory
- https://access.redhat.com/errata/RHSA-2024:1383Third Party Advisory
- https://access.redhat.com/errata/RHSA-2024:2094Third Party Advisory
- https://access.redhat.com/security/cve/CVE-2023-5981Third Party Advisory, Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2248445Issue Tracking, Third Party Advisory
- https://gnutls.org/security-new.html#GNUTLS-SA-2023-10-23Issue Tracking, Vendor Advisory
- http://www.openwall.com/lists/oss-security/2024/01/19/3Third Party Advisory
- https://access.redhat.com/errata/RHSA-2024:0155Third Party Advisory
- https://access.redhat.com/errata/RHSA-2024:0319Third Party Advisory
- https://access.redhat.com/errata/RHSA-2024:0399Third Party Advisory
- https://access.redhat.com/errata/RHSA-2024:0451Third Party Advisory
- https://access.redhat.com/errata/RHSA-2024:0533Third Party Advisory
- https://access.redhat.com/errata/RHSA-2024:1383Third Party Advisory
- https://access.redhat.com/errata/RHSA-2024:2094Third Party Advisory
- https://access.redhat.com/security/cve/CVE-2023-5981Third Party Advisory, Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2248445Issue Tracking, Third Party Advisory
- https://gnutls.org/security-new.html#GNUTLS-SA-2023-10-23Issue Tracking, Vendor Advisory
- https://lists.debian.org/debian-lts-announce/2023/11/msg00016.htmlThird Party Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2023-5981?
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.
How severe is CVE-2023-5981?
CVE-2023-5981 has a CVSS score of 5.9/10 (MEDIUM severity). The EPSS model estimates a 1.26% probability of exploitation in the next 30 days.
How do I fix CVE-2023-5981?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2023-5981?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST