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National Cyber Awareness System

Vulnerability Summary for CVE-2008-7159

Original release date:09/10/2009
Last revised:10/23/2012
Source: US-CERT/NIST

Overview

The silc_asn1_encoder function in lib/silcasn1/silcasn1_encode.c in Secure Internet Live Conferencing (SILC) Toolkit before 1.1.8 allows remote attackers to overwrite a stack location and possibly execute arbitrary code via a crafted OID value, related to incorrect use of a %lu format string.

Impact

CVSS Severity (version 2.0):
CVSS v2 Base Score:5.8 (MEDIUM) (AV:N/AC:M/Au:N/C:N/I:P/A:P) (legend)
Impact Subscore: 4.9
Exploitability Subscore: 8.6
CVSS Version 2 Metrics:
Access Vector: Network exploitable
Access Complexity: Medium
Authentication: Not required to exploit
Impact Type:Allows unauthorized modification; Allows disruption of service

Vendor Statements (disclaimer)

Official Statement from Red Hat (09/11/2009)
Not vulnerable. This issue did not affect the versions of libsilc as shipped with Red Hat Enterprise Linux 4, or 5.

References to Advisories, Solutions, and Tools

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External Source: BID
Name: 36192
Type: Patch Information
Hyperlink:http://www.securityfocus.com/bid/36192
External Source: MLIST
Name: [oss-security] 20090831 CVE id request: silc-toolkit
Type: Patch Information
Hyperlink:http://www.openwall.com/lists/oss-security/2009/08/31/5
External Source: DEBIAN
Name: DSA-1879
Type: Patch Information
Hyperlink:http://www.debian.org/security/2009/dsa-1879
External Source: CONFIRM
Name: http://silcnet.org/general/news/news_toolkit.php
Type: Advisory; Patch Information
Hyperlink:http://silcnet.org/general/news/news_toolkit.php
External Source: CONFIRM
Name: http://silcnet.org/docs/changelog/SILC%20Toolkit%201.1.8
Type: Advisory; Patch Information
Hyperlink:http://silcnet.org/docs/changelog/SILC%20Toolkit%201.1.8
External Source: XF
Name: silctoolkit-silcasn1encoder-format-string(53477)
Hyperlink:http://xforce.iss.net/xforce/xfdb/53477
External Source: MLIST
Name: [oss-security] 20090903 Re: CVE id request: silc-toolkit
Hyperlink:http://www.openwall.com/lists/oss-security/2009/09/03/5
External Source: MANDRIVA
Name: MDVSA-2009:234
Hyperlink:http://www.mandriva.com/security/advisories?name=MDVSA-2009:234
External Source: SECUNIA
Name: 36625
Type: Advisory
Hyperlink:http://secunia.com/advisories/36625
External Source: SECUNIA
Name: 36614
Type: Advisory
Hyperlink:http://secunia.com/advisories/36614
External Source: SUSE
Name: SUSE-SR:2009:016
Hyperlink:http://lists.opensuse.org/opensuse-security-announce/2009-10/msg00001.html

Vulnerable software and versions

Nav control imageConfiguration 1
spacerNav control imageOR
spacerspacerNav control image* cpe:/a:silcnet:silc_toolkit:1.1.3
spacerspacerNav control image* cpe:/a:silcnet:silc_toolkit:1.1.4
spacerspacerNav control image* cpe:/a:silcnet:silc_toolkit:1.1.5
spacerspacerNav control image* cpe:/a:silcnet:silc_toolkit:1.1.1
spacerspacerNav control image* cpe:/a:silcnet:silc_toolkit:1.1.2
spacerspacerNav control image* cpe:/a:silcnet:silc_toolkit:1.1
spacerspacerNav control image* cpe:/a:silcnet:silc_toolkit:1.1.6 and previous versions
* Denotes Vulnerable Software
* Changes related to vulnerability configurations

Technical Details

Vulnerability Type (View All)
  • Format String Vulnerability (CWE-134)
CVE Standard Vulnerability Entry:http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-7159