CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
9.5	$0-$5k	0.00

A vulnerability was found in Digia Qt and classified as very critical. This issue affects the function Lookup_MarkMarkPos of the file harfbuzz-gpos.c. The manipulation with an unknown input 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:

Heap-based buffer overflow in the Lookup_MarkMarkPos function in the HarfBuzz module (harfbuzz-gpos.c), as used by Qt before 4.7.4 and Pango, allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a crafted font file.

The weakness was shared 06/15/2012 by Josh Bressers as confirmed git commit (GIT Repository). The advisory is shared at cgit.freedesktop.org. The identification of this vulnerability is CVE-2011-3193 since 08/19/2011. 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 price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 12/03/2021).

The vulnerability scanner Nessus provides a plugin with the ID 75609 (openSUSE Security Update : libQtWebKit-devel (openSUSE-SU-2011:1119-1)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family SuSE Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 119653 (CentOS Security Update for Qt 4 (CESA-2011:1324)).

Upgrading to version 4.5.2 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 patching the affected component.

The vulnerability is also documented in the databases at X-Force (69991), Tenable (75609), SecurityFocus (BID 49723†), OSVDB (75652†) and Secunia (SA41537†). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Vendor

• Digia

Name

• Qt

Version

• 4.0.0
• 4.0.1
• 4.1.0
• 4.1.1
• 4.1.2
• 4.1.3
• 4.1.4
• 4.1.5
• 4.2.0
• 4.2.1
• 4.2.3
• 4.3.0
• 4.3.1
• 4.3.2
• 4.3.3
• 4.3.4
• 4.3.5
• 4.4.0
• 4.4.1
• 4.4.2
• 4.4.3
• 4.5.0
• 4.5.1
• 4.5.2
• 4.5.3
• 4.6.0
• 4.6.1
• 4.6.2
• 4.6.3
• 4.6.4
• 4.7.0
• 4.7.1
• 4.7.2
• 4.7.3

License

• open-source

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 10.0
VulDB Meta Temp Score: 9.5

VulDB Base Score: 10.0
VulDB Temp Score: 9.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock

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

NVD Base Score: 🔍

Exploitinginfo

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

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	unlock	unlock	unlock	unlock
Today	unlock	unlock	unlock	unlock

Nessus ID: 75609
Nessus Name: openSUSE Security Update : libQtWebKit-devel (openSUSE-SU-2011:1119-1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

OpenVAS ID: 881004
OpenVAS Name: CentOS Update for qt4 CESA-2011:1324 centos5 i386
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Upgrade: Qt 4.5.2
Patch: cgit.freedesktop.org

Timelineinfo

09/21/2010 🔍
08/19/2011 +332 days 🔍
09/21/2011 +33 days 🔍
09/22/2011 +1 days 🔍
09/27/2011 +5 days 🔍
06/15/2012 +262 days 🔍
06/15/2012 +0 days 🔍
06/13/2014 +728 days 🔍
03/23/2015 +283 days 🔍
12/03/2021 +2447 days 🔍

Sourcesinfo

Advisory: USN-1504-1
Researcher: Josh Bressers
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2011-3193 (🔍)
GCVE (CVE): GCVE-0-2011-3193
GCVE (VulDB): GCVE-100-60989

OVAL: 🔍

X-Force: 69991
SecurityFocus: 49723 - Pango HarfBuzz Engine Buffer Overflow Vulnerability
Secunia: 41537 - Qt Insecure Library Loading and Buffer Overflow Vulnerabilities, Highly Critical
OSVDB: 75652
Vulnerability Center: 33326 - Pango 1.2.3, 1.2.4, 1.2.5 and 1.28.3 HarfBuzz Remote Code Execution Vulnerability, Medium

Entryinfo

Created: 03/23/2015 04:50 PM
Updated: 12/03/2021 11:05 PM
Changes: 03/23/2015 04:50 PM (68), 04/02/2017 01:52 PM (14), 12/03/2021 10:46 PM (2), 12/03/2021 10:55 PM (1), 12/03/2021 11:05 PM (1)
Complete: 🔍
Cache ID: 18:757:40

Discussion

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