# CVE-2024-0553

## Summary

- **CVE ID:** CVE-2024-0553
- **Severity:** HIGH
- **CVSS Score:** 7.5 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N)
- **CWE:** CWE-203, CWE-385
- **Published:** Jan 16, 2024
- **Last Modified:** Mar 24, 2026

## Description

A vulnerability was found in GnuTLS. The response times to malformed ciphertexts in RSA-PSK ClientKeyExchange differ from the response times of ciphertexts with correct PKCS#1 v1.5 padding. This issue may allow a remote attacker to perform a timing side-channel attack in the RSA-PSK key exchange, potentially leading to the leakage of sensitive data. CVE-2024-0553 is designated as an incomplete resolution for CVE-2023-5981.

## Affected Products

- Unknown product (3.8.0)
- Red Hat — Red Hat Enterprise Linux 8 (0:3.6.16-8.el8_9.1)
- Red Hat — Red Hat Enterprise Linux 8.6 Extended Update Support (0:3.6.16-5.el8_6.3)
- Red Hat — Red Hat Enterprise Linux 8.8 Extended Update Support (0:3.6.16-7.el8_8.2)
- Red Hat — Red Hat Enterprise Linux 9 (0:3.7.6-23.el9_3.3)
- Red Hat — Red Hat Enterprise Linux 9.2 Extended Update Support (0:3.7.6-21.el9_2.2)
- Red Hat — RHODF-4.15-RHEL-9 (v4.15.0-37)
- Red Hat — RHODF-4.15-RHEL-9 (v4.15.0-68)
- Red Hat — RHODF-4.15-RHEL-9 (v4.15.0-158)
- Red Hat — RHODF-4.15-RHEL-9 (v4.15.0-39)
- Red Hat — RHODF-4.15-RHEL-9 (v4.15.0-58)
- Red Hat — RHODF-4.15-RHEL-9 (v4.15.0-13)
- Red Hat — RHODF-4.15-RHEL-9 (v4.15.0-81)
- Red Hat — RHODF-4.15-RHEL-9 (v4.15.0-79)
- Red Hat — RHODF-4.15-RHEL-9 (v4.15.0-22)
- Red Hat — RHODF-4.15-RHEL-9 (v4.15.0-57)
- Red Hat — RHODF-4.15-RHEL-9 (v4.15.0-6)
- Red Hat — RHODF-4.15-RHEL-9 (v4.15.0-15)
- Red Hat — RHODF-4.15-RHEL-9 (v4.15.0-54)
- Red Hat — RHODF-4.15-RHEL-9 (v4.15.0-10)
- Red Hat — RHODF-4.15-RHEL-9 (v4.15.0-26)
- Red Hat — RHODF-4.15-RHEL-9 (v4.15.0-19)
- Red Hat — RHODF-4.15-RHEL-9 (v4.15.0-21)
- Red Hat — RHODF-4.15-RHEL-9 (v4.15.0-103)
- Red Hat — RHOL-5.8-RHEL-9 (v5.8.6-22)
- Red Hat — RHOL-5.8-RHEL-9 (v5.8.6-11)
- Red Hat — RHOL-5.8-RHEL-9 (v6.8.1-407)
- Red Hat — RHOL-5.8-RHEL-9 (v5.8.6-19)
- Red Hat — RHOL-5.8-RHEL-9 (v1.0.0-479)
- Red Hat — RHOL-5.8-RHEL-9 (v5.8.6-7)
- Red Hat — RHOL-5.8-RHEL-9 (v0.4.0-247)
- Red Hat — RHOL-5.8-RHEL-9 (v5.8.6-5)
- Red Hat — RHOL-5.8-RHEL-9 (v1.1.0-227)
- Red Hat — RHOL-5.8-RHEL-9 (v5.8.1-470)
- Red Hat — RHOL-5.8-RHEL-9 (v2.9.6-14)
- Red Hat — RHOL-5.8-RHEL-9 (v5.8.6-2)
- Red Hat — RHOL-5.8-RHEL-9 (v5.8.6-24)
- Red Hat — RHOL-5.8-RHEL-9 (v5.8.6-10)
- Red Hat — RHOL-5.8-RHEL-9 (v0.1.0-525)
- Red Hat — RHOL-5.8-RHEL-9 (v0.1.0-224)
- Red Hat — RHOL-5.8-RHEL-9 (v0.28.1-56)

## References

- [CNA](https://access.redhat.com/errata/RHSA-2024:0533)
- [CNA](https://access.redhat.com/errata/RHSA-2024:0627)
- [CNA](https://access.redhat.com/errata/RHSA-2024:0796)
- [CNA](https://access.redhat.com/errata/RHSA-2024:1082)
- [CNA](https://access.redhat.com/errata/RHSA-2024:1108)
- [CNA](https://access.redhat.com/errata/RHSA-2024:1383)
- [CNA](https://access.redhat.com/errata/RHSA-2024:2094)
- [CNA](https://access.redhat.com/security/cve/CVE-2024-0553)
- [CNA](https://bugzilla.redhat.com/show_bug.cgi?id=2258412)
- [CNA](https://gitlab.com/gnutls/gnutls/-/issues/1522)
- [CNA](https://lists.gnupg.org/pipermail/gnutls-help/2024-January/004841.html)
- [CVE](http://www.openwall.com/lists/oss-security/2024/01/19/3)
- [CVE](https://lists.debian.org/debian-lts-announce/2024/02/msg00010.html)
- [CVE](https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/7ZEIOLORQ7N6WRPFXZSYDL2MC4LP7VFV/)
- [CVE](https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GNXKVR5YNUEBNHAHM5GSYKBZX4W2HMN2/)
- [CVE](https://security.netapp.com/advisory/ntap-20240202-0011/)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 1.61%
- **EPSS Percentile:** 74.9

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-19._