X.org X11 X Font Server build_range memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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5.5$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic was found in X.org X11. Impacted is the function build_range of the component X Font Server. The manipulation results in memory corruption. This vulnerability is known as CVE-2007-4568. No exploit is available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability, which was classified as problematic, was found in X.org X11 (Windowing System Software) (version unknown). Affected is the function build_range of the component X Font Server. The manipulation with an unknown input leads to a memory corruption vulnerability. CWE is classifying the issue as 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. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

Integer overflow in the build_range function in X.Org X Font Server (xfs) before 1.0.5 allows context-dependent attackers to execute arbitrary code via (1) QueryXBitmaps and (2) QueryXExtents protocol requests with crafted size values, which triggers a heap-based buffer overflow.

The bug was discovered 10/02/2007. The weakness was published 10/03/2007 by Sean Larsson with iDefense (Website). The advisory is shared for download at labs.idefense.com. This vulnerability is traded as CVE-2007-4568 since 08/28/2007. The attack needs to approached within the local network. The exploitation doesn't require any form of authentication. There are known technical details, but no exploit is available.

It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 1 days. During that time the estimated underground price was around $25k-$100k. The vulnerability scanner Nessus provides a plugin with the ID 67634 (Oracle Linux 3 : XFree86 (ELSA-2008-0029)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Oracle Linux Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 117368 (CentOS Security Update for xorg (CESA-2008:0030)).

Upgrading eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at lists.freedesktop.org. The best possible mitigation is suggested to be upgrading to the latest version. A possible mitigation has been published 6 days after the disclosure of the vulnerability. Attack attempts may be identified with Snort ID 15382. In this case the pattern |12 01 03 00|<|00 00 00|AAAA is used for detection. Furthermore it is possible to detect and prevent this kind of attack with TippingPoint and the filter 8987.

The vulnerability is also documented in the databases at X-Force (36919), Tenable (67634), SecurityFocus (BID 25898†), OSVDB (37721†) and Secunia (SA28891†). Similar entries are available at VDB-3361, VDB-40977, VDB-40976 and VDB-40975. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 5.5

VulDB Base Score: 6.3
VulDB Temp Score: 5.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

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

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Proof-of-Concept

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 67634
Nessus Name: Oracle Linux 3 : XFree86 (ELSA-2008-0029)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
Nessus Port: 🔍

OpenVAS ID: 58787
OpenVAS Name: FreeBSD Ports: xfs
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Patch: lists.freedesktop.org

Snort ID: 15382
Snort Message: SPECIFIC-THREATS X.Org X Font Server QueryXBitmaps and QueryXExtents Handlers integer overflow attempt
Snort Pattern: 🔍
TippingPoint: 🔍

McAfee IPS: 🔍
McAfee IPS Version: 🔍

ISS Proventia IPS: 🔍
PaloAlto IPS: 🔍
Fortigate IPS: 🔍

Timelineinfo

08/28/2007 🔍
10/02/2007 +35 days 🔍
10/02/2007 +0 days 🔍
10/03/2007 +1 days 🔍
10/03/2007 +0 days 🔍
10/05/2007 +2 days 🔍
10/05/2007 +0 days 🔍
10/09/2007 +4 days 🔍
10/11/2007 +2 days 🔍
10/16/2007 +4 days 🔍
10/18/2007 +2 days 🔍
02/12/2008 +117 days 🔍
07/12/2013 +1977 days 🔍
07/27/2019 +2206 days 🔍

Sourcesinfo

Vendor: x.org

Advisory: labs.idefense.com⛔
Researcher: Sean Larsson
Organization: iDefense
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2007-4568 (🔍)
GCVE (CVE): GCVE-0-2007-4568
GCVE (VulDB): GCVE-100-3360

OVAL: 🔍

X-Force: 36919 - X.Org XFS protocol requests buffer overflow, High Risk
SecurityFocus: 25898 - X.Org X Font Server Multiple Memory Corruption Vulnerabilities
Secunia: 28891
OSVDB: 37721 - X.Org X Font Server (xfs) build_range Function Overflow
SecurityTracker: 1018763
Vulnerability Center: 16532 - X.Org X Font Server <1.0.5 Local Code Execution via QueryXBitmaps and QueryXExtents Requests, Medium
Vupen: ADV-2008-0495

See also: 🔍

Entryinfo

Created: 10/18/2007 09:48
Updated: 07/27/2019 17:40
Changes: 10/18/2007 09:48 (112), 07/27/2019 17:40 (1)
Complete: 🔍
Cache ID: 216:679:103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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