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Last updated: 8/2/2014 4:41:16 AM

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National Cyber Awareness System

Vulnerability Summary for CVE-2010-2547

Original release date: 08/05/2010
Last revised: 12/10/2010
Source: US-CERT/NIST

Overview

Use-after-free vulnerability in kbx/keybox-blob.c in GPGSM in GnuPG 2.x through 2.0.16 allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a certificate with a large number of Subject Alternate Names, which is not properly handled in a realloc operation when importing the certificate or verifying its signature.

Impact

CVSS Severity (version 2.0):
CVSS v2 Base Score: 5.1 (MEDIUM) (AV:N/AC:H/Au:N/C:P/I:P/A:P) (legend)
Impact Subscore: 6.4
Exploitability Subscore: 4.9
CVSS Version 2 Metrics:
Access Vector: Network exploitable; Victim must voluntarily interact with attack mechanism
Access Complexity: High
Authentication: Not required to exploit
Impact Type: Allows unauthorized disclosure of information; Allows unauthorized modification; Allows disruption of service
Per: http://lists.gnupg.org/pipermail/gnupg-announce/2010q3/000302.html 'GnuPG 1.x is NOT affected because it does not come with the GPGSM tool.'

References to Advisories, Solutions, and Tools

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External Source: SLACKWARE
Name: SSA:2010-240-01
External Source: VUPEN
Name: ADV-2010-2217
External Source: SECTRACK
Name: 1024247
External Source: SECUNIA
Name: 38877
Type: Advisory
External Source: BID
Name: 41945
External Source: FEDORA
Name: FEDORA-2010-11413
External Source: CONFIRM
Name: https://issues.rpath.com/browse/RPL-3229
External Source: MLIST
Name: [gnupg-announce] 20100723 [Announce] Security Alert for GnuPG 2.0 - Realloc bug in GPGSM
Type: Advisory; Patch Information
External Source: VUPEN
Name: ADV-2010-1988
Type: Advisory
External Source: SUSE
Name: SUSE-SR:2010:020
External Source: VUPEN
Name: ADV-2010-3125
External Source: DEBIAN
Name: DSA-2076
External Source: SECUNIA
Name: 40841
Type: Advisory
External Source: CONFIRM
Name: http://wiki.rpath.com/wiki/Advisories:rPSA-2010-0076
External Source: VUPEN
Name: ADV-2010-1931
Type: Advisory
External Source: VUPEN
Name: ADV-2010-1950
Type: Advisory
External Source: SECUNIA
Name: 40718
Type: Advisory
External Source: MANDRIVA
Name: MDVSA-2010:143

Technical Details

Vulnerability Type (View All)
  • Resource Management Errors (CWE-399)