CVE-2024-0553

What it is

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.

At a glance

Exploitability

Can be exploited over the network without logging in. High risk of data exposure.

Exploit odds

1.6% chance of exploitation in the next 30 days (EPSS).

Fix

A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

1. 2024-01-16 12:15 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-11-05 12:17 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 1.6% in the next 30 days (EPSS).
• Severity: 7.5 HIGH (CVSS).
• Fix: a patch or advisory is linked.

Details

Published

2024-01-16 12:15 UTC

Last modified

2026-11-05 12:17 UTC

Exploit probability

1.6% · EPSS, next 30 days

Weakness

CWE-203

Record status

Modified

Affected

• Gnu Gnutls < 3.8.3
• Fedoraproject Fedora 39
• Redhat Enterprise Linux 8.0
• Redhat Enterprise Linux 9.0

Attack profile CVSS 3.1 · 7.5

Attack vector

Network

Complexity

Low

Privileges needed

None

User interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2024-0553.md and follow it. Check whether this project is affected by CVE-2024-0553. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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