Linux Kernel 2.6.9 z90crypt_unlocked_ioctl access control

CVSS Meta Temp Score
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CTI Interest Score
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5.6$0-$5k0.00

A vulnerability has been found in Linux Kernel 2.6.9 (Operating System) and classified as problematic. Affected by this vulnerability is the function z90crypt_unlocked_ioctl. The manipulation with an unknown input leads to a access control vulnerability. The CWE definition for the vulnerability is CWE-264. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

The z90crypt_unlocked_ioctl function in the z90crypt driver in the Linux kernel 2.6.9 does not perform a capability check for the Z90QUIESCE operation, which allows local users to leverage euid 0 privileges to force a driver outage.

The issue has been introduced in 10/19/2004. The weakness was shared 09/18/2009 as Bug 505983 as not defined bug report (Bugzilla). The advisory is shared at bugzilla.redhat.com. This vulnerability is known as CVE-2009-1883. An attack has to be approached locally. The exploitation doesn't need any form of authentication. Technical details and also a public exploit are known. MITRE ATT&CK project uses the attack technique T1068 for this issue.

A public exploit has been developed in ANSI C. It is possible to download the exploit at securityfocus.com. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 1795 days. During that time the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 67925 (Oracle Linux 4 : kernel (ELSA-2009-1438)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Oracle Linux Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 155789 (Oracle Enterprise Linux Update for Kernel (ELSA-2009-1438)).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at Tenable (67925). The entry 49466 is related to this item.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
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CVSSv3info

VulDB Meta Base Score: 5.9
VulDB Meta Temp Score: 5.6

VulDB Base Score: 5.9
VulDB Temp Score: 5.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
unlockunlockunlockunlockunlockunlock
unlockunlockunlockunlockunlockunlock
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VulDB Base Score: 🔍
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Exploitinginfo

Class: Access control
CWE: CWE-264
ATT&CK: T1068

Local: Yes
Remote: No

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Programming Language: 🔍
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Dayunlockunlockunlockunlock
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Nessus ID: 67925
Nessus Name: Oracle Linux 4 : kernel (ELSA-2009-1438)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

OpenVAS ID: 66209
OpenVAS Name: Debian Security Advisory DSA 1929-1 (linux-2.6)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

10/19/2004 🔍
06/02/2009 +1686 days 🔍
08/06/2009 +65 days 🔍
09/18/2009 +43 days 🔍
09/18/2009 +0 days 🔍
09/18/2009 +0 days 🔍
10/07/2009 +19 days 🔍
07/12/2013 +1374 days 🔍
03/18/2015 +614 days 🔍
08/22/2021 +2349 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: Bug 505983
Status: Not defined
Confirmation: 🔍

CVE: CVE-2009-1883 (🔍)
OVAL: 🔍

Vulnerability Center: 23624 - Linux kernel 2.6.9 z90crypt Driver Z90QUIESCE Operation Local DoS Vulnerability, Medium
SecurityFocus: 36176 - Linux Kernel Multiple Protocols Local Information Disclosure Vulnerabilities

scip Labs: https://www.scip.ch/en/?labs.20161013
See also: 🔍

Entryinfo

Created: 03/18/2015 15:15
Updated: 08/22/2021 19:25
Changes: 03/18/2015 15:15 (67), 02/15/2017 09:26 (11), 08/22/2021 19:17 (4), 08/22/2021 19:25 (1)
Complete: 🔍

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