Executive Summary

Summary
Title FontForge: User-assisted execution of arbitrary code
Informations
Name GLSA-201201-08 First vendor Publication 2012-01-23
Vendor Gentoo Last vendor Modification 2012-01-23
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:M/Au:N/C:P/I:P/A:P)
Cvss Base Score 6.8 Attack Range Network
Cvss Impact Score 6.4 Attack Complexity Medium
Cvss Expoit Score 8.6 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

Synopsis

A stack-based buffer overflow flaw in FontForge could result in execution of arbitrary code or a Denial of Service.

Background

FontForge is a PostScript font editor and converter.

Description

FontForge is vulnerable to an error when processing the
"CHARSET_REGISTRY" header in font files, which could cause a stack-based buffer overflow.

Impact

A remote attacker could entice a user to open a specially crafted BDF file using FontForge font editor, possibly resulting in the remote execution of arbitrary code with the privileges of the FontForge process, or a Denial of Service (application crash).

Workaround

There is no known workaround at this time.

Resolution

All FontForge users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot -v ">=media-gfx/fontforge-20110222-r1"

NOTE: This is a legacy GLSA. Updates for all affected architectures are available since October 12, 2011. It is likely that your system is already no longer affected by this issue.

References

[ 1 ] CVE-2010-4259 : http://nvd.nist.gov/nvd.cfm?cvename=CVE-2010-4259

Availability

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

http://security.gentoo.org/glsa/glsa-201201-08.xml

Original Source

Url : http://security.gentoo.org/glsa/glsa-201201-08.xml

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-119 Failure to Constrain Operations within the Bounds of a Memory Buffer

OVAL Definitions

Definition Id: oval:org.mitre.oval:def:13065
 
Oval ID: oval:org.mitre.oval:def:13065
Title: DSA-2253-1 fontforge -- buffer overflow
Description: Ulrik Persson reported a stack-based buffer overflow flaw in FontForge, a font editor. When processed a crafted Bitmap Distribution Format FontForge could crash or execute arbitrary code with the privileges of the user running FontForge.
Family: unix Class: patch
Reference(s): DSA-2253-1
CVE-2010-4259
 Version: 5
Platform(s): Debian GNU/Linux 5.0
 Product(s): fontforge
Definition Synopsis:

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 1

OpenVAS Exploits

Date Description
2012-02-12 Name : Gentoo Security Advisory GLSA 201201-08 (FontForge)
File : nvt/glsa_201201_08.nasl
2011-08-03 Name : Debian Security Advisory DSA 2253-1 (fontforge)
File : nvt/deb_2253_1.nasl
2010-12-28 Name : Fedora Update for fontforge FEDORA-2010-18573
File : nvt/gb_fedora_2010_18573_fontforge_fc14.nasl
2010-12-28 Name : Fedora Update for fontforge FEDORA-2010-18577
File : nvt/gb_fedora_2010_18577_fontforge_fc13.nasl

Open Source Vulnerability Database (OSVDB)

Id Description
69652 FontForge BDF Font File CHARSET_REGISTRY Header Overflow

FontForge is prone to an overflow condition. The program fails to parse overly long 'CHARSET_REGISTRY' lines properly, resulting in a stack-based buffer overflow. With a specially crafted BDF font file, a remote attacker can potentially execute arbitrary code.

Nessus® Vulnerability Scanner

Date Description
2012-01-24 Name : The remote Gentoo host is missing one or more security-related patches.
File : gentoo_GLSA-201201-08.nasl - Type : ACT_GATHER_INFO
2011-06-10 Name : The remote Debian host is missing a security-related update.
File : debian_DSA-2253.nasl - Type : ACT_GATHER_INFO
2010-12-14 Name : The remote Fedora host is missing a security update.
File : fedora_2010-18573.nasl - Type : ACT_GATHER_INFO
2010-12-14 Name : The remote Fedora host is missing a security update.
File : fedora_2010-18577.nasl - Type : ACT_GATHER_INFO

Alert History

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0
Date Informations
2014-02-17 11:37:08
  • Multiple Updates