Oracle Secure Global Desktop 4.63/4.71/5.0/5.1 LibXfont bitmap/bdfread.c BDF Font File memory corruption

CVSS Meta Temp Score
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8.7$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, has been found in Oracle Secure Global Desktop 4.63/4.71/5.0/5.1. The impacted element is an unknown function of the file bitmap/bdfread.c of the component LibXfont. The manipulation as part of BDF Font File leads to memory corruption. This vulnerability is referenced as CVE-2013-6462. No exploit is available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in Oracle Secure Global Desktop 4.63/4.71/5.0/5.1 (Connectivity Software) and classified as critical. This issue affects an unknown functionality of the file bitmap/bdfread.c of the component LibXfont. The manipulation as part of a BDF Font File leads to a memory corruption vulnerability. Using CWE to declare the problem leads to CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

Stack-based buffer overflow in the bdfReadCharacters function in bitmap/bdfread.c in X.Org libXfont 1.1 through 1.4.6 allows remote attackers to cause a denial of service (crash) or possibly execute arbitrary code via a long string in a character name in a BDF font file.

The weakness was published 04/15/2014 by Alan Coopersmith as Oracle Critical Patch Update Advisory - April 2014 as confirmed advisory (Website). The advisory is shared at oracle.com. The identification of this vulnerability is CVE-2013-6462 since 11/04/2013. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details are known, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 71901 (CentOS 5 / 6 : libXfont (CESA-2014:0018)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family CentOS Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 167200 (SUSE Enterprise Linux Security Update for xorg-x11-libs (SUSE-SU-2014:0881-1)).

Upgrading eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at cgit.freedesktop.org. The best possible mitigation is suggested to be upgrading to the latest version. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (90123), Tenable (71901), SecurityFocus (BID 64694†), OSVDB (101842†) and Secunia (SA56240†). Similar entries are available at VDB-8885, VDB-8888, VDB-8892 and VDB-8897. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 10.0
VulDB Meta Temp Score: 8.7

VulDB Base Score: 10.0
VulDB Temp Score: 8.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VulDB Base Score: 🔍
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Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Unproven

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 71901
Nessus Name: CentOS 5 / 6 : libXfont (CESA-2014:0018)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

OpenVAS ID: 702838
OpenVAS Name: Debian Security Advisory DSA 2838-1 (libxfont - buffer overflow
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
Exposure Time: 🔍

Patch: cgit.freedesktop.org

Timelineinfo

11/04/2013 🔍
12/24/2013 +50 days 🔍
01/08/2014 +15 days 🔍
01/09/2014 +1 days 🔍
01/12/2014 +3 days 🔍
04/15/2014 +93 days 🔍
04/15/2014 +0 days 🔍
04/15/2014 +0 days 🔍
04/16/2014 +1 days 🔍
04/16/2014 +0 days 🔍
04/16/2014 +0 days 🔍
06/17/2021 +2619 days 🔍

Sourcesinfo

Vendor: oracle.com

Advisory: Oracle Critical Patch Update Advisory - April 2014
Researcher: Alan Coopersmith
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2013-6462 (🔍)
GCVE (CVE): GCVE-0-2013-6462
GCVE (VulDB): GCVE-100-12965

OVAL: 🔍
IAVM: 🔍

X-Force: 90123 - X.Org libXfont BDF buffer overflow
SecurityFocus: 64694 - X.Org libXfont BDF Font File Handling Stack Buffer Overflow Vulnerability
Secunia: 56240 - X.Org libXfont "bdfReadCharacters()" Buffer Overflow Vulnerability, Moderately Critical
OSVDB: 101842
SecurityTracker: 1030101 - Oracle Virtualization Multiple Flaws Let Remote Users Gain Elevated Privileges, Local Users Deny Service, and Local and Remote Users Partially Access and Modify Data
Vulnerability Center: 44101 - X.Org libXfontLocal DoS and Code Execution Vulnerability via a BDF Font File, Critical

See also: 🔍

Entryinfo

Created: 04/16/2014 10:33
Updated: 06/17/2021 09:34
Changes: 04/16/2014 10:33 (96), 05/25/2017 10:43 (1), 06/17/2021 09:34 (2)
Complete: 🔍
Cache ID: 216::103

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