5.0
MEDIUM
CVE-2006-7239
GnuTLS Null Pointer Dereference in X.509 Certificate Handling
Description

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.

INFO

Published Date :

May 24, 2010, 7:30 p.m.

Last Modified :

Feb. 13, 2023, 2:17 a.m.

Remotely Exploitable :

Yes !

Impact Score :

2.9

Exploitability Score :

10.0
Affected Products

The following products are affected by CVE-2006-7239 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Gnu gnutls
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2006-7239.

URL Resource
http://lists.gnupg.org/pipermail/gnutls-dev/2006-August/001190.html
http://lists.gnupg.org/pipermail/gnutls-dev/2006-August/001192.html Patch
http://www.gnu.org/software/gnutls/security.html Vendor Advisory

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2006-7239 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2006-7239 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CVE Modified by [email protected]

    Feb. 13, 2023

    Action Type Old Value New Value
    Changed Description CVE-2006-7239 gnutls: unknown hash algorithm NULL pointer derefence [GNUTLS-SA-2006-2] 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.
    Removed CVSS V2 Red Hat, Inc. (AV:N/AC:M/Au:S/C:N/I:N/A:P)
    Removed Reference https://access.redhat.com/errata/RHBA-2012:0319 [No Types Assigned]
    Removed Reference https://access.redhat.com/security/cve/CVE-2006-7239 [No Types Assigned]
    Removed Reference https://bugzilla.redhat.com/show_bug.cgi?id=595229 [No Types Assigned]
  • CVE Modified by [email protected]

    Feb. 02, 2023

    Action Type Old Value New Value
    Changed Description 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. CVE-2006-7239 gnutls: unknown hash algorithm NULL pointer derefence [GNUTLS-SA-2006-2]
    Added CVSS V2 Red Hat, Inc. (AV:N/AC:M/Au:S/C:N/I:N/A:P)
    Added Reference https://bugzilla.redhat.com/show_bug.cgi?id=595229 [No Types Assigned]
    Added Reference https://access.redhat.com/errata/RHBA-2012:0319 [No Types Assigned]
    Added Reference https://access.redhat.com/security/cve/CVE-2006-7239 [No Types Assigned]
  • Initial Analysis by [email protected]

    May. 25, 2010

    Action Type Old Value New Value
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2006-7239 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2006-7239 weaknesses.

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.30 }} 0.00%

score

0.64490

percentile

CVSS2 - Vulnerability Scoring System
Access Vector
Access Complexity
Authentication
Confidentiality
Integrity
Availability