VDB-51615 · CVE-2009-4012 · BID 37822

Linux.thai LibThai up to 0.1.12 numeric error

CVSS Meta Temp Score
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CTI Interest Score
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A vulnerability classified as very critical has been found in Linux.thai LibThai up to 0.1.12. This affects an unknown code. The manipulation with an unknown input leads to a numeric error vulnerability. CWE is classifying the issue as CWE-189. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

Multiple integer overflows in LibThai before 0.1.13 might allow context-dependent attackers to execute arbitrary code via long strings that trigger heap-based buffer overflows, related to (1) thbrk/thbrk.c and (2) thwbrk/thwbrk.c. NOTE: some of these details are obtained from third party information.

The weakness was published 01/19/2010 by Tim Starling (Website). It is possible to read the advisory at security.debian.org. This vulnerability is uniquely identified as CVE-2009-4012. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 08/31/2021).

The vulnerability scanner Nessus provides a plugin with the ID 44372 (openSUSE Security Update : libthai (libthai-1808)), 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 165237 (SUSE Security Update for Multiple Packages (SUSE-SR:2010:002)).

Upgrading to version 0.1.2 eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (44372), SecurityFocus (BID 37822†) and Vulnerability Center (SBV-24670†).





CPE 2.3info

CPE 2.2info


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

VulDB Base Score: 10.0
VulDB Temp Score: 9.5
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Class: Numeric error
CWE: CWE-189

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

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Nessus ID: 44372
Nessus Name: openSUSE Security Update : libthai (libthai-1808)
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OpenVAS ID: 830817
OpenVAS Name: Mandriva Update for libthai MDVSA-2010:010 (libthai)
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Threat Intelligenceinfo

Interest: 🔍
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Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: LibThai 0.1.2


11/19/2009 🔍
01/15/2010 +57 days 🔍
01/19/2010 +4 days 🔍
01/19/2010 +0 days 🔍
01/19/2010 +0 days 🔍
01/25/2010 +6 days 🔍
02/02/2010 +8 days 🔍
03/18/2015 +1870 days 🔍
08/31/2021 +2358 days 🔍


Advisory: security.debian.org
Researcher: Tim Starling
Status: Not defined
Confirmation: 🔍

CVE: CVE-2009-4012 (🔍)

SecurityFocus: 37822 - LibThai Unspecified Integer Overflow Vulnerability
Vulnerability Center: 24670 - LibThai Prior to 0.1.12 Arbitrary Code Execution Vulnerability via Long Strings, High


Created: 03/18/2015 03:15 PM
Updated: 08/31/2021 10:58 AM
Changes: 03/18/2015 03:15 PM (61), 02/20/2017 10:10 AM (10), 08/31/2021 10:52 AM (3), 08/31/2021 10:58 AM (1)
Complete: 🔍
Cache ID: 3:A03:40


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