Skip to content
Noroxi
NVD / CVE Program· CNA redhat

CVE-2024-12243: Gnutls: gnutls impacted by inefficient der decoding in libtasn1 leading to remote dos

Noroxi assessment

Priority: Monitor (action score 21/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 1.2% (FIRST EPSS); higher than 70.2% of all records.
  • Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
  • According to CISA the attack is automatable: targets can be found by mass scanning.
  • Fixed version: gitlab.com/gnutls/gnutls/ gnutls 3.8.8; azl3 gnutls 3.8.3-4 on Azure Linux 3.0 3.8.3-4; cbl2 gnutls 3.7.11-3 on CBL Mariner 2.0 3.7.11-3.

Low priority for now. Upgrade to gitlab.com/gnutls/gnutls/ gnutls 3.8.8; azl3 gnutls 3.8.3-4 on Azure Linux 3.0 3.8.3-4; cbl2 gnutls 3.7.11-3 on CBL Mariner 2.0 3.7.11-3 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

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.

MediumCVSS 5.3 · v3.1—No exploit Fix available
Published
Feb 10, 2025
Updated
Oct 22, 2026
EPSS
1.2% · 70th percentile

Report tools

JSON

Action score

21

Monitor

Low priority for now.

CVSS
21 / 40 · 5.3 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 1.2%

CISA SSVC decision

Exploitation
none
Automatable
yes
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · redhat
5.3
NVD has not scored this yet; the score shown is the CNA’s.

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2024-12243

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

One daily email digest (06:00 UTC); connect a webhook for KEV listings and weaponized exploits instantly.

Your free account also gets you

Running WordPress? Scan your site free with WP Lens

  • Stack alerts: add the products and versions you run, get the new CVEs that affect them
  • Uptime monitoring: 1 site, instant email when it goes down
  • Add your domain: subdomains and takeover risk scanned every week (1 domain)
  • 10 scans an hour on the security tools (3 a day without an account), an API key and MCP
  • All your scans in one panel: findings, what changed in the last scan, a report per domain or per client (PDF, share link)
All free tools

Sign up with email · Have an account? Sign in

Free account, no card. Unfollow any time.

Don't want an account? Get "Exploited this week" by email every MondayDon't want an account? RSS feed for red hat records

Running WordPress? Scan your site free with WP Lens

Is your version affected? Check it

Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

We use this product, ask for help

Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

—

Versions reported by the vendor

Affected version ranges reported by the assigning authority (redhat). Independent of NVD's CPE analysis and usually ahead of it.

  • gitlab.com/gnutls/gnutls/ gnutls

    • up to and including 3.6.16affected · semver
    • 3.7.0 and later · up to and including 3.7.11affected · semver
    • 3.8.0 and later · before 3.8.8affected · semver
    • 3.8.9 and laternot affected · semver

  • Red Hat Red Hat Discovery 1.14

    • 1.14.3-1748529279 and laternot affected · rpm
    • 1.14.2-1748467619 and laternot affected · rpm

  • Red Hat Red Hat Enterprise Linux 10

    • all versionsunknown

  • Red Hat Red Hat Enterprise Linux 6

    • all versionsunknown

  • Red Hat Red Hat Enterprise Linux 7

    • all versionsunknown

  • Red Hat Red Hat Enterprise Linux 8

    • 0:3.6.16-8.el8_10.3 and laternot affected · rpm
    • 0:3.6.16-8.el8_10.3 and laternot affected · rpm

  • Red Hat Red Hat Enterprise Linux 9

    • 0:3.8.3-6.el9 and laternot affected · rpm
    • 0:3.8.3-6.el9 and laternot affected · rpm

  • Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions

    • 0:3.7.6-21.el9_2.4 and laternot affected · rpm

  • Red Hat Red Hat Enterprise Linux 9.4 Extended Update Support

    • 0:3.8.3-4.el9_4.2 and laternot affected · rpm

  • Red Hat Red Hat OpenShift Container Platform 4

    • all versionsaffected

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
AlmaLinux:8gnutlsbefore 3.6.16-8.el8_10.33.6.16-8.el8_10.3
AlmaLinux:8gnutls-c++before 3.6.16-8.el8_10.33.6.16-8.el8_10.3
AlmaLinux:8gnutls-danebefore 3.6.16-8.el8_10.33.6.16-8.el8_10.3
AlmaLinux:8gnutls-develbefore 3.6.16-8.el8_10.33.6.16-8.el8_10.3
AlmaLinux:8gnutls-utilsbefore 3.6.16-8.el8_10.33.6.16-8.el8_10.3
AlmaLinux:9gnutlsbefore 3.8.3-6.el93.8.3-6.el9
AlmaLinux:9gnutls-c++before 3.8.3-6.el93.8.3-6.el9
AlmaLinux:9gnutls-danebefore 3.8.3-6.el93.8.3-6.el9
AlmaLinux:9gnutls-develbefore 3.8.3-6.el93.8.3-6.el9
AlmaLinux:9gnutls-utilsbefore 3.8.3-6.el93.8.3-6.el9
Alpine:v3.20gnutlsbefore 3.8.12-r03.8.12-r0
Alpine:v3.23gnutlsbefore 3.8.11-r03.8.11-r0
Debian:11gnutls28before 3.7.1-5+deb11u73.7.1-5+deb11u7
Debian:12gnutls28before 3.7.9-2+deb12u43.7.9-2+deb12u4
Debian:13gnutls28before 3.8.9-23.8.9-2
openSUSE:Leap 15.6gnutlsbefore 3.8.3-150600.4.6.23.8.3-150600.4.6.2
openSUSE:Tumbleweedgnutlsbefore 3.8.9-1.13.8.9-1.1
Red Hat:enterprise_linux:8::appstreamgnutls-c++before 0:3.6.16-8.el8_10.30:3.6.16-8.el8_10.3
Red Hat:enterprise_linux:8::appstreamgnutls-c++-debuginfobefore 0:3.6.16-8.el8_10.30:3.6.16-8.el8_10.3
Red Hat:enterprise_linux:8::appstreamgnutls-danebefore 0:3.6.16-8.el8_10.30:3.6.16-8.el8_10.3
Red Hat:enterprise_linux:8::appstreamgnutls-dane-debuginfobefore 0:3.6.16-8.el8_10.30:3.6.16-8.el8_10.3
Red Hat:enterprise_linux:8::appstreamgnutls-debuginfobefore 0:3.6.16-8.el8_10.30:3.6.16-8.el8_10.3
Red Hat:enterprise_linux:8::appstreamgnutls-debugsourcebefore 0:3.6.16-8.el8_10.30:3.6.16-8.el8_10.3
Red Hat:enterprise_linux:8::appstreamgnutls-develbefore 0:3.6.16-8.el8_10.30:3.6.16-8.el8_10.3

+43

Same product

red hat: all records

Other highest-scoring records for the same primary product.

  • CVE-2024-3019Pcp: exposure of the redis server backend allows remote command execution via pmproxy
    35Monitor
  • CVE-2024-11218Podman: buildah: container breakout by using --jobs=2 and a race condition when building a malicious containerfile
    34Monitor
  • CVE-2024-1753Buildah: buildah: container escape via improper bind mount validation
    34Monitor

Published before and after this one in the same product

  • ← EarlierCVE-2024-10963Nov 7, 2024 · Pam: improper hostname interpretation in pam_access leads to access control bypass
    29Monitor
  • ← EarlierCVE-2024-12133Feb 10, 2025 · Libtasn1: inefficient der decoding in libtasn1 leading to potential remote dos
    21Monitor
  • Later →CVE-2025-32050Apr 3, 2025 · Libsoup: integer overflow in append_param_quoted
    23Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
gitlab.com/gnutls/gnutls/ gnutls3.8.8Vendor (CNA)
azl3 gnutls 3.8.3-4 on Azure Linux 3.03.8.3-4 · CBL-Mariner ReleasesMicrosoft (MSRC)
cbl2 gnutls 3.7.11-3 on CBL Mariner 2.03.7.11-3 · CBL-Mariner ReleasesMicrosoft (MSRC)
cbl2 gnutls 3.7.11-3 on CBL-Mariner 2.03.7.11-3 · CBL-Mariner ReleasesMicrosoft (MSRC)
almalinux:gnutls3.6.16-8.el8_10.3 · AlmaLinux:8Package registry (OSV)
almalinux:gnutls-c++3.6.16-8.el8_10.3 · AlmaLinux:8Package registry (OSV)
almalinux:gnutls-dane3.6.16-8.el8_10.3 · AlmaLinux:8Package registry (OSV)
almalinux:gnutls-devel3.6.16-8.el8_10.3 · AlmaLinux:8Package registry (OSV)
almalinux:gnutls-utils3.6.16-8.el8_10.3 · AlmaLinux:8Package registry (OSV)
alpine:gnutls3.8.12-r0 · Alpine:v3.20Package registry (OSV)
debian:gnutls283.7.9-2+deb12u4 · Debian:12Package registry (OSV)
opensuse:gnutls3.8.3-150600.4.6.2 · openSUSE:Leap 15.6Package registry (OSV)
red hat:gnutls0:3.7.6-21.el9_2.4 · Red Hat:rhel_e4s:9.2::baseosPackage registry (OSV)
red hat:gnutls-c++0:3.7.6-21.el9_2.4 · Red Hat:rhel_e4s:9.2::appstreamPackage registry (OSV)
red hat:gnutls-c++-debuginfo0:3.7.6-21.el9_2.4 · Red Hat:rhel_e4s:9.2::appstreamPackage registry (OSV)
red hat:gnutls-dane0:3.7.6-21.el9_2.4 · Red Hat:rhel_e4s:9.2::appstreamPackage registry (OSV)
red hat:gnutls-dane-debuginfo0:3.7.6-21.el9_2.4 · Red Hat:rhel_e4s:9.2::appstreamPackage registry (OSV)
red hat:gnutls-debuginfo0:3.7.6-21.el9_2.4 · Red Hat:rhel_e4s:9.2::appstreamPackage registry (OSV)
red hat:gnutls-debugsource0:3.7.6-21.el9_2.4 · Red Hat:rhel_e4s:9.2::appstreamPackage registry (OSV)
red hat:gnutls-devel0:3.7.6-21.el9_2.4 · Red Hat:rhel_e4s:9.2::appstreamPackage registry (OSV)
red hat:gnutls-utils0:3.7.6-21.el9_2.4 · Red Hat:rhel_e4s:9.2::appstreamPackage registry (OSV)
red hat:gnutls-utils-debuginfo0:3.7.6-21.el9_2.4 · Red Hat:rhel_e4s:9.2::appstreamPackage registry (OSV)
rocky linux:gnutls0:3.6.16-8.el8_10.3 · Rocky Linux:8Package registry (OSV)
suse:gnutls3.8.3-150600.4.6.2 · SUSE:Linux Enterprise Module for Certifications 15 SP7Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

No history yet (it accumulates with the daily EPSS job).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

  • CVE-2024-121330 days apartLibtasn1: inefficient der decoding in libtasn1 leading to potential remote dos
    21Monitor

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
none
Integrity
none
Availability
low · the service can be disrupted
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
None
Integrity impact
None
Availability impact
Low

Weakness class (CWE)

CWE-407 · Inefficient Algorithmic Complexity

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

nvd-secondary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (12 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records