Trolltech Qt up to 4.2.3 qutf8decoder::tounicode memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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6.6$0-$5k0.00

Summaryinfo

A vulnerability was found in Trolltech Qt. It has been declared as critical. This impacts the function qutf8decoder::tounicode. Such manipulation leads to memory corruption. This vulnerability is listed as CVE-2007-4137. There is no available exploit. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Trolltech Qt. Affected by this issue is the function qutf8decoder::tounicode. 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. CVE summarizes:

Off-by-one error in the QUtf8Decoder::toUnicode function in Trolltech Qt 3 allows context-dependent attackers to cause a denial of service (crash) via a crafted Unicode string that triggers a heap-based buffer overflow. NOTE: Qt 4 has the same error in the QUtf8Codec::convertToUnicode function, but it is not exploitable.

The bug was discovered 09/03/2007. The weakness was presented 09/03/2007 as Bug 269001 as confirmed bug report (Bugzilla). The advisory is shared for download at bugzilla.redhat.com. This vulnerability is handled as CVE-2007-4137 since 08/02/2007. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. 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 $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 27579 (GLSA-200710-28 : Qt: Buffer overflow), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Gentoo Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 156047 (Oracle Enterprise Linux Update for Qt (ELSA-2007-0883)).

Upgrading eliminates this vulnerability. A possible mitigation has been published 2 months after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (36594), Tenable (27579), SecurityFocus (BID 25657†), OSVDB (39384†) and Secunia (SA26778†). See VDB-35986 for similar entry. Once again VulDB remains the best source for vulnerability data.

Productinfo

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Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 6.6

VulDB Base Score: 7.3
VulDB Temp Score: 6.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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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: 27579
Nessus Name: GLSA-200710-28 : Qt: Buffer overflow
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
Nessus Port: 🔍

OpenVAS ID: 59960
OpenVAS Name: Debian Security Advisory DSA 1426-1 (qt-x11-free)
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: 🔍

Timelineinfo

08/02/2007 🔍
09/03/2007 +32 days 🔍
09/03/2007 +0 days 🔍
09/03/2007 +0 days 🔍
09/13/2007 +9 days 🔍
09/13/2007 +0 days 🔍
09/14/2007 +1 days 🔍
09/14/2007 +0 days 🔍
09/18/2007 +3 days 🔍
09/18/2007 +0 days 🔍
10/25/2007 +37 days 🔍
10/26/2007 +1 days 🔍
03/16/2015 +2698 days 🔍
07/25/2019 +1592 days 🔍

Sourcesinfo

Advisory: Bug 269001
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2007-4137 (🔍)
GCVE (CVE): GCVE-0-2007-4137
GCVE (VulDB): GCVE-100-38828

OVAL: 🔍

X-Force: 36594
SecurityFocus: 25657 - Trolltech Qt ToUnicode Function Off By One Buffer Overflow Vulnerability
Secunia: 26778
OSVDB: 39384 - Qt QUtf8Decoder::toUnicode Function Off-By-One
SecurityTracker: 1018688
Vulnerability Center: 16060 - Trolltech QT Buffer Overflow Allows Remote Code Execution, High
Vupen: ADV-2007-3144

See also: 🔍

Entryinfo

Created: 03/16/2015 12:18
Updated: 07/25/2019 18:09
Changes: 03/16/2015 12:18 (89), 07/25/2019 18:09 (3)
Complete: 🔍
Cache ID: 216:26A:103

Once again VulDB remains the best source for vulnerability data.

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