ktools 0.3 VGETSTRING memory corruption

EntryHistoryDiffjsonxmlCTI

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.
6.6	$0-$5k	0.00

A vulnerability classified as critical was found in ktools 0.3. This vulnerability affects the function VGETSTRING. The manipulation with an unknown input leads to a memory corruption vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

Stack-based buffer overflow in kkstrtext.h in ktools library 0.3 and earlier, as used in products such as (1) centericq, (2) orpheus, (3) motor, and (4) groan, allows local users or remote attackers to execute arbitrary code via a long parameter to the VGETSTRING macro.

The bug was discovered 11/18/2005. The weakness was released 11/26/2005 by Mehdi Oudad and Kevin Fernandez with Zone-H (Website). The advisory is shared for download at debian.org. This vulnerability was named CVE-2005-3863 since 11/29/2005. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful 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 8 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 22625 (Debian DSA-1083-1 : motor - buffer overflow), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Debian Local Security Checks and running in the context l.

Upgrading eliminates this vulnerability. A possible mitigation has been published 7 months after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (23233) and Tenable (22625).

Productinfo

Name

ktools

Version

CPE 2.3info

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CPE 2.2info

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CVSSv3info

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

VulDB Base Score: 7.3
VulDB Temp Score: 6.6
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Exploitinginfo

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

Local: No
Remote: Yes

Availability: 🔍
Status: Proof-of-Concept

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Nessus ID: 22625
Nessus Name: Debian DSA-1083-1 : motor - buffer overflow
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OpenVAS ID: 56853
OpenVAS Name: Debian Security Advisory DSA 1083-1 (motor)
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Threat Intelligenceinfo

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Countermeasuresinfo

Recommended: Upgrade
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Timelineinfo

11/18/2005 🔍
11/26/2005 +8 days 🔍
11/28/2005 +1 days 🔍
11/28/2005 +0 days 🔍
11/28/2005 +0 days 🔍
11/29/2005 +0 days 🔍
11/29/2005 +0 days 🔍
01/03/2006 +35 days 🔍
05/31/2006 +148 days 🔍
10/14/2006 +136 days 🔍
03/11/2015 +3070 days 🔍
06/13/2019 +1555 days 🔍

Sourcesinfo

Advisory: debian.org
Researcher: Mehdi Oudad, Kevin Fernandez
Organization: Zone-H
Status: Not defined

CVE: CVE-2005-3863 (🔍)
X-Force: 23233
Vulnerability Center: 10098 - Ktools Library Stack Overflow via kkstrtext.h, High
SecurityFocus: 15600 - KTools Remote Buffer Overflow Vulnerability
Secunia: 17768 - ktools VGETSTRING Buffer Overflow Vulnerability, Moderately Critical
OSVDB: 21161 - ktools VGETSTRING Function Overflow
Vupen: ADV-2005-2605

Entryinfo

Created: 03/11/2015 23:39
Updated: 06/13/2019 08:27
Changes: 03/11/2015 23:39 (81), 06/13/2019 08:27 (2)
Complete: 🔍