5.3

CVE-2024-12243: gnutls Inefficient Algorithmic Complexity

CVSS: 5.3v3.1MediumDeferred
AliasesALPINE-CVE-2024-12243MGASA-2025-0071SUSE-SU-2025:00764-1
Published 10-02-2025Last modified 15-10-2026
Open JSON

Vulnerability summary

CVE-2024-12243 is a medium (CVSS 5.3) Inefficient Algorithmic Complexity vulnerability in gnutls. EPSS estimates a 1.29% chance of exploitation in the next 30 days, higher than 69.8% of scored vulnerabilities.

Overall risk
21/100
0100
Low · default modelHow is this calculated?
CVSS score
5.3/10
010
Medium · v3.1 (CVE.org)
EPSS score
1.29%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 3 · Related 2
OPENSUSE-SU-2025:14835-1RHSA-2025:17361USN-8502-1

Timeline

  1. 10-02-2025
    PublishedVulnerability first disclosed.
  2. 15-10-2026
    Last modifiedVulnerability information updated.

Description

A flaw was found in GnuTLS, which relies on libtasn1 for ASN.1 data processing. Due to an inefficient algorithm in libtasn1, decoding certain DER-encoded certificate data can take excessive time, leading to increased resource consumption. This flaw allows a remote attacker to send a specially crafted certificate, causing GnuTLS to become unresponsive or slow, resulting in a denial-of-service condition.

CVSS metrics

6 scores · 6 sources · 1 version

EPSS trend

Probability

1.29%

Chance of exploitation in the next 30 days

Percentile

70%

Versus all other CVEs

30-day change

0.00 pp

From 1.29% on 19-09-2026

19-09-202619-10-2026
EPSS score
1.29%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Redhat10 products
  • gnutls< 0:3.6.16-8.el8_10.3 | < 0:3.8.3-6.el9 | < 0:3.8.3-4.el9_4.2
  • gnutls-c++< 0:3.6.16-8.el8_10.3 | < 0:3.8.3-6.el9 | < 0:3.8.3-4.el9_4.2
  • gnutls-c++-debuginfo< 0:3.6.16-8.el8_10.3 | < 0:3.8.3-6.el9 | < 0:3.8.3-4.el9_4.2
  • gnutls-dane< 0:3.6.16-8.el8_10.3 | < 0:3.8.3-6.el9 | < 0:3.8.3-4.el9_4.2
  • gnutls-dane-debuginfo< 0:3.6.16-8.el8_10.3 | < 0:3.8.3-6.el9 | < 0:3.8.3-4.el9_4.2
Suse10 products
  • gnutls&distro=SUSE Linux Enterprise Micro 5.1< 3.6.7-150200.14.34.1
  • gnutls&distro=SUSE Linux Enterprise Micro 5.2< 3.6.7-150200.14.34.1
  • gnutls&distro=SUSE Linux Enterprise Micro 5.3< 3.7.3-150400.11.1
  • gnutls&distro=SUSE Linux Enterprise Micro 5.4< 3.7.3-150400.4.47.1
  • gnutls&distro=SUSE Linux Enterprise Micro 5.5< 3.7.3-150400.4.47.1
Alpine1 product
  • gnutls< 3.8.12-r0 | < 3.8.11-r0
Debian1 product
  • gnutls28< 3.8.9-2 | < 3.7.9-2+deb12u4 | < 3.7.1-5+deb11u7
Mageia1 product
  • gnutls< 3.8.4-1.1.mga9
Opensuse1 product
  • gnutls&distro=openSUSE Leap 15.6< 3.8.3-150600.4.6.2
Ubuntu1 product
  • gnutls28< 3.5.18-1ubuntu1.6+esm3 | All versions (No fix recorded) | < 3.7.3-4ubuntu1.6+Fips1 | < 3.8.3-1.1ubuntu3.4+Fips1 | < 3.6.13-2ubuntu1.12 | < 3.7.3-4ubuntu1.6 | < 3.8.3-1.1ubuntu3.3

7 vendors · 25 products

References

40 links
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