Executive Summary

Summary
Title GnuPG: User-assisted execution of arbitrary code
Informations
Name GLSA-201110-15 First vendor Publication 2011-10-22
Vendor Gentoo Last vendor Modification 2011-10-22
Severity (Vendor) Normal Revision N/A

Security-Database Scoring CVSS v3

Cvss vector : N/A
Overall CVSS Score NA
Base Score NA Environmental Score NA
impact SubScore NA Temporal Score NA
Exploitabality Sub Score NA
 
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:H/Au:N/C:P/I:P/A:P)
Cvss Base Score 5.1 Attack Range Network
Cvss Impact Score 6.4 Attack Complexity High
Cvss Expoit Score 4.9 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

Synopsis

The GPGSM utility included in GnuPG contains a use-after-free vulnerability that may allow an unauthenticated remote attacker to execute arbitrary code.

Background

The GNU Privacy Guard, GnuPG, is a free replacement for the PGP suite of cryptographic software. The GPGSM utility in GnuPG is responsible for processing X.509 certificates, signatures and encryption as well as S/MIME messages.

Description

The GPGSM utility in GnuPG contains a use-after-free vulnerability that may be exploited when importing a crafted X.509 certificate explicitly or during the signature verification process.

Impact

An unauthenticated remote attacker may execute arbitrary code with the privileges of the user running GnuPG by enticing them to import a crafted certificate.

Workaround

There is no known workaround at this time.

Resolution

All GnuPG 2.x users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=app-crypt/gnupg-2.0.16-r1"

References

[ 1 ] CVE-2010-2547 : http://nvd.nist.gov/nvd.cfm?cvename=CVE-2010-2547

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website:

http://security.gentoo.org/glsa/glsa-201110-15.xml

Original Source

Url : http://security.gentoo.org/glsa/glsa-201110-15.xml

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-416 Use After Free

OVAL Definitions

Definition Id: oval:org.mitre.oval:def:11631
 
Oval ID: oval:org.mitre.oval:def:11631
Title: DSA-2076 gnupg2 -- use-after-free
Description: It was discovered that GnuPG 2 uses a freed pointer when verifying a signature or importing a certificate with many Subject Alternate Names, potentially leading to arbitrary code execution.
Family: unix Class: patch
Reference(s): DSA-2076
CVE-2010-2547
 Version: 5
Platform(s): Debian GNU/Linux 5.0
 Product(s): gnupg2
Definition Synopsis:
Definition Id: oval:org.mitre.oval:def:13159
 
Oval ID: oval:org.mitre.oval:def:13159
Title: USN-970-1 -- gnupg2 vulnerability
Description: It was discovered that GPGSM in GnuPG2 did not correctly handle certificates with a large number of Subject Alternate Names. If a user or automated system were tricked into processing a specially crafted certificate, an attacker could cause a denial of service or execute arbitrary code with privileges of the user invoking the program.
Family: unix Class: patch
Reference(s): USN-970-1
CVE-2010-2547
 Version: 5
Platform(s): Ubuntu 8.04
Ubuntu 10.04
Ubuntu 9.04
Ubuntu 9.10
 Product(s): gnupg2
Definition Synopsis:
Definition Id: oval:org.mitre.oval:def:20091
 
Oval ID: oval:org.mitre.oval:def:20091
Title: DSA-2076-1 gnupg2 - execution of arbitrary code
Description: It was discovered that GnuPG 2 uses a freed pointer when verifying a signature or importing a certificate with many Subject Alternate Names, potentially leading to arbitrary code execution.
Family: unix Class: patch
Reference(s): DSA-2076-1
CVE-2010-2547
 Version: 5
Platform(s): Debian GNU/Linux 5.0
 Product(s): gnupg2
Definition Synopsis:
Definition Id: oval:org.mitre.oval:def:22297
 
Oval ID: oval:org.mitre.oval:def:22297
Title: RHSA-2010:0603: gnupg2 security update (Moderate)
Description: 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.
Family: unix Class: patch
Reference(s): RHSA-2010:0603-01
CESA-2010:0603
CVE-2010-2547
 Version: 4
Platform(s): Red Hat Enterprise Linux 5
CentOS Linux 5
 Product(s): gnupg2
Definition Synopsis:
Definition Id: oval:org.mitre.oval:def:22992
 
Oval ID: oval:org.mitre.oval:def:22992
Title: ELSA-2010:0603: gnupg2 security update (Moderate)
Description: 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.
Family: unix Class: patch
Reference(s): ELSA-2010:0603-01
CVE-2010-2547
 Version: 6
Platform(s): Oracle Linux 5
 Product(s): gnupg2
Definition Synopsis:
Definition Id: oval:org.mitre.oval:def:27257
 
Oval ID: oval:org.mitre.oval:def:27257
Title: DEPRECATED: ELSA-2010-0603 -- gnupg2 security update (moderate)
Description: [2.0.10-3.1] - fix use after free when importing certain X509 certificates CVE-2010-2547 (#618156)
Family: unix Class: patch
Reference(s): ELSA-2010-0603
CVE-2010-2547
 Version: 4
Platform(s): Oracle Linux 5
 Product(s): gnupg2
Definition Synopsis:

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 91
Os 1
Os 1

OpenVAS Exploits

Date Description
2012-02-12 Name : Gentoo Security Advisory GLSA 201110-15 (GnuPG)
File : nvt/glsa_201110_15.nasl
2011-08-09 Name : CentOS Update for gnupg2 CESA-2010:0603 centos5 i386
File : nvt/gb_CESA-2010_0603_gnupg2_centos5_i386.nasl
2010-08-21 Name : Debian Security Advisory DSA 2076-1 (gnupg2)
File : nvt/deb_2076_1.nasl
2010-08-20 Name : Fedora Update for gnupg2 FEDORA-2010-11382
File : nvt/gb_fedora_2010_11382_gnupg2_fc12.nasl
2010-08-13 Name : Ubuntu Update for gnupg2 vulnerability USN-970-1
File : nvt/gb_ubuntu_USN_970_1.nasl
2010-08-06 Name : RedHat Update for gnupg2 RHSA-2010:0603-01
File : nvt/gb_RHSA-2010_0603-01_gnupg2.nasl
2010-08-06 Name : Fedora Update for gnupg2 FEDORA-2010-11413
File : nvt/gb_fedora_2010_11413_gnupg2_fc13.nasl
2010-08-02 Name : Mandriva Update for gnupg2 MDVSA-2010:143 (gnupg2)
File : nvt/gb_mandriva_MDVSA_2010_143.nasl
0000-00-00 Name : Slackware Advisory SSA:2010-240-01 gnupg2
File : nvt/esoft_slk_ssa_2010_240_01.nasl

Open Source Vulnerability Database (OSVDB)

Id Description
66624 GnuPG GPGSM kbx/keybox-blob.c Crafted Certificate Use-after-free Arbitrary Co...

Nessus® Vulnerability Scanner

Date Description
2014-06-13 Name : The remote openSUSE host is missing a security update.
File : suse_11_3_gpg2-100728.nasl - Type : ACT_GATHER_INFO
2013-07-12 Name : The remote Oracle Linux host is missing a security update.
File : oraclelinux_ELSA-2010-0603.nasl - Type : ACT_GATHER_INFO
2012-08-01 Name : The remote Scientific Linux host is missing a security update.
File : sl_20100804_gnupg2_on_SL5_x.nasl - Type : ACT_GATHER_INFO
2011-10-24 Name : The remote Gentoo host is missing one or more security-related patches.
File : gentoo_GLSA-201110-15.nasl - Type : ACT_GATHER_INFO
2010-12-02 Name : The remote SuSE 11 host is missing one or more security updates.
File : suse_11_gpg2-100728.nasl - Type : ACT_GATHER_INFO
2010-10-11 Name : The remote SuSE 10 host is missing a security-related patch.
File : suse_gpg2-7107.nasl - Type : ACT_GATHER_INFO
2010-08-29 Name : The remote Slackware host is missing a security update.
File : Slackware_SSA_2010-240-01.nasl - Type : ACT_GATHER_INFO
2010-08-12 Name : The remote Ubuntu host is missing one or more security-related patches.
File : ubuntu_USN-970-1.nasl - Type : ACT_GATHER_INFO
2010-08-09 Name : The remote CentOS host is missing a security update.
File : centos_RHSA-2010-0603.nasl - Type : ACT_GATHER_INFO
2010-08-06 Name : The remote openSUSE host is missing a security update.
File : suse_11_1_gpg2-100728.nasl - Type : ACT_GATHER_INFO
2010-08-06 Name : The remote openSUSE host is missing a security update.
File : suse_11_2_gpg2-100728.nasl - Type : ACT_GATHER_INFO
2010-08-05 Name : The remote Red Hat host is missing a security update.
File : redhat-RHSA-2010-0603.nasl - Type : ACT_GATHER_INFO
2010-08-03 Name : The remote Fedora host is missing a security update.
File : fedora_2010-11413.nasl - Type : ACT_GATHER_INFO
2010-08-02 Name : The remote Mandriva Linux host is missing a security update.
File : mandriva_MDVSA-2010-143.nasl - Type : ACT_GATHER_INFO
2010-07-29 Name : The remote Debian host is missing a security-related update.
File : debian_DSA-2076.nasl - Type : ACT_GATHER_INFO

Alert History

If you want to see full details history, please login or register.
0
Date Informations
2014-02-17 11:37:02
  • Multiple Updates