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CVE-2024-0553

Gnu Gnutls vulnerability

7.5 HIGHPublic exploitEPSS 1.61%
  1. Published16 Jan 2024

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.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityNone
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected products

Gnu Gnutls< 3.8.3
Fedoraproject Fedora39
Redhat Enterprise Linux8.0 · 9.0

Remediation

Fixed in
Gnu Gnutls≥ 3.8.3

References

and 6 more references

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Frequently asked

Is CVE-2024-0553 being actively exploited?

CVE-2024-0553 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 1.61%.

How severe is CVE-2024-0553?

CVE-2024-0553 has a CVSS 3.1 base score of 7.5, rated high. EPSS estimates a 1.61% probability of exploitation.

Which products are affected by CVE-2024-0553?

Affected products include Gnu Gnutls, Fedoraproject Fedora, Redhat Enterprise Linux.

How do I fix CVE-2024-0553?

Upgrade affected software to a fixed version, for example Gnu Gnutls 3.8.3 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2024-0553 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.