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CVE-2006-7239· NVD / CVE Program· CNA redhat

The _gnutls_x509_oid2mac_algorithm function in lib/gnutls_algorithms.c in GnuTLS before 1.4.2 allows remote attackers to cause a denial of s

The _gnutls_x509_oid2mac_algorithm function in lib/gnutls_algorithms.c in GnuTLS before 1.4.2 allows remote attackers to cause a denial of service (crash) via a crafted X.509 certificate that uses a hash algorithm that is not supported by GnuTLS, which triggers a NULL pointer dereference.

MediumCVSS 5.0 · v2.0—No exploit Fix available
Published
May 24, 2010
Updated
Jun 16, 2026
EPSS
1.5% · 74th percentile
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Report tools

JSON

Action score

20

Monitor

Low priority for now.

CVSS
20 / 40 · 5.0 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 1.5%

Affected systems

VendorProduct
gnugnutls

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • gnu gnutlsup to 1.4.1 inclusive
  • gnu gnutls1.0.16
  • gnu gnutls1.0.17
  • gnu gnutls1.0.18
  • gnu gnutls1.0.19
  • gnu gnutls1.0.20
  • gnu gnutls1.0.21
  • gnu gnutls1.0.22
  • gnu gnutls1.0.23
  • gnu gnutls1.0.24
  • gnu gnutls1.0.25
  • gnu gnutls1.1.13
  • gnu gnutls1.1.14
  • gnu gnutls1.1.15
  • gnu gnutls1.1.16
  • gnu gnutls1.1.17
  • gnu gnutls1.1.18
  • gnu gnutls1.1.19
  • gnu gnutls1.1.20
  • gnu gnutls1.1.21

Package-level exposure

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

EcosystemPackageAffected rangeFix
Red Hat:enterprise_linux:5::clientgnutlsbefore 0:1.4.1-7.el5_8.10:1.4.1-7.el5_8.1
Red Hat:enterprise_linux:5::clientgnutls-debuginfobefore 0:1.4.1-7.el5_8.10:1.4.1-7.el5_8.1
Red Hat:enterprise_linux:5::clientgnutls-utilsbefore 0:1.4.1-7.el5_8.10:1.4.1-7.el5_8.1
Red Hat:enterprise_linux:5::client_workstationgnutls-develbefore 0:1.4.1-7.el5_8.10:1.4.1-7.el5_8.1

Same product

gnu: all records

Other highest-scoring records for the same primary product.

  • CVE-2017-5334Double free vulnerability in the gnutls_x509_ext_import_proxy function in GnuTLS before 3.3.26 and 3.5.x before 3.5.8 allows remote attacker
    49Plan
  • CVE-2019-3829A vulnerability was found in gnutls versions from 3.5.8 before 3.6.7.
    48Plan
  • CVE-2008-1948The _gnutls_server_name_recv_params function in lib/ext_server_name.c in libgnutls in gnutls-serv in GnuTLS before 2.2.4 does not properly c
    44Plan
  • CVE-2017-5337Multiple heap-based buffer overflows in the read_attribute function in GnuTLS before 3.3.26 and 3.5.x before 3.5.8 allow remote attackers to
    41Plan
  • CVE-2017-5336Stack-based buffer overflow in the cdk_pk_get_keyid function in lib/opencdk/pubkey.c in GnuTLS before 3.3.26 and 3.5.x before 3.5.8 allows r
    41Plan
  • CVE-2021-20232A flaw was found in gnutls.
    40Plan

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
red hat:gnutls0:1.4.1-7.el5_8.1 · Red Hat:enterprise_linux:5::clientPackage registry (OSV)
red hat:gnutls-debuginfo0:1.4.1-7.el5_8.1 · Red Hat:enterprise_linux:5::clientPackage registry (OSV)
red hat:gnutls-devel0:1.4.1-7.el5_8.1 · Red Hat:enterprise_linux:5::client_workstationPackage registry (OSV)
red hat:gnutls-utils0:1.4.1-7.el5_8.1 · Red Hat:enterprise_linux:5::clientPackage 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.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

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.

No credits in the CNA record.

Variant candidates

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

No nightly-computed relations.

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

  • No special conditions are required; it is repeatable.

If successful

Confidentiality
none
Integrity
none
Availability
P · the service can be disrupted
Attack complexity
Low
Confidentiality impact
None
Integrity impact
None
Availability impact
P

Weakness class (CWE)

CWE-310 · Cryptographic Issues

CVSS vector

AV:N/AC:L/Au:N/C:N/I:N/A:P

nvd-primary

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.

Noroxi analysis

No Noroxi analysis for this record yet

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Change log

  1. Fix✗ → ✓

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

References

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

All records