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CVE

CVE-2024-0553

A vulnerability was found in GnuTLS. The response times to malformed ciphertexts in RSA-PSK ClientKeyExchange differ fro

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.

HIGH · CVSS 7.5 EPSS 0.01028
Act now
  • Public exploit or PoC is available
  • SSVC automatable: yes - attacks can be scripted at scale
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-203Observable Discrepancy
CWE-203Observable Discrepancy
▤

Affected Products & Versions

3
gnu gnutls< 3.8.3
fedoraproject fedoraall versions
redhat enterprise linuxall versions
⚠

Public Exploits & PoCs

1
pocgitlab.com · 1522gitlab.com
▣

Scoring & Timeline

7.5
HIGH · CVSS v3.1 · secalert@redhat.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD16 Jan 2024 · 12:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
yes
Technical impact
partial
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
⚑

Vendor Advisories

16
msrcCVE-2024-0553
suse-csafopenSUSE-SU-2024:13593-1
suse-csafSUSE-SU-2024:0638-2
suse-csafSUSE-SU-2024:1179-1
suse-csafSUSE-SU-2024:0860-1
🔗

References & Sources

8
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://access.redhat.com/security/cve/CVE-2024-0553Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2258412Issue TrackingThird Party Advisory
https://lists.gnupg.org/pipermail/gnutls-help/2024-January/004841.htmlMailing List
http://www.openwall.com/lists/oss-security/2024/01/19/3
https://lists.debian.org/debian-lts-announce/2024/02/msg00010.html
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/7ZEIOLORQ7N6WRPFXZSYDL2MC4LP7VFV/
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