GNU C Library 2.1.1 ld_library_path unsetenv privileges management

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CTI Interest Score
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8.0$0-$5k0.00

A vulnerability was found in GNU C Library 2.1.1 (Software Library). It has been declared as critical. Affected by this vulnerability is the function unsetenv in the library ld_library_path. The manipulation with an unknown input leads to a privileges management vulnerability. The CWE definition for the vulnerability is CWE-269. The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

The unsetenv function in glibc 2.1.1 does not properly unset an environmental variable if the variable is provided twice to a program, which could allow local users to execute arbitrary commands in setuid programs by specifying their own duplicate environmental variables such as LD_PRELOAD or LD_LIBRARY_PATH.

The weakness was published 11/14/2000 (Website). It is possible to read the advisory at marc.info. This vulnerability is known as CVE-2000-0824. The exploitation appears to be easy. Attacking locally is a requirement. The exploitation doesn't need any form of authentication. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1068 according to MITRE ATT&CK.

The vulnerability scanner Nessus provides a plugin with the ID 61833 (Mandrake Linux Security Advisory : glibc (MDKSA-2000:040)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Mandriva Local Security Checks.

Upgrading eliminates this vulnerability.

The vulnerability is also documented in the databases at X-Force (5173) and Tenable (61833).

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: 8.4
VulDB Meta Temp Score: 8.0

VulDB Base Score: 8.4
VulDB Temp Score: 8.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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Exploitinginfo

Class: Privileges management
CWE: CWE-269 / CWE-266
ATT&CK: T1068

Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

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Nessus ID: 61833
Nessus Name: Mandrake Linux Security Advisory : glibc (MDKSA-2000:040)
Nessus File: 🔍
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Nessus Port: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

09/17/1999 🔍
09/17/1999 +0 days 🔍
11/14/2000 +424 days 🔍
11/14/2000 +0 days 🔍
09/06/2012 +4314 days 🔍
03/19/2013 +194 days 🔍
06/27/2014 +465 days 🔍
06/25/2021 +2555 days 🔍

Sourcesinfo

Vendor: gnu.org

Advisory: marc.info
Status: Not defined

CVE: CVE-2000-0824 (🔍)
X-Force: 5173
Vulnerability Center: 38839 - Glibc 2.1.1 Local Arbitrary Command Execution due to a Flaw in the unsetenv Function, High
SecurityFocus: 648 - FSF GNU glibc unsetenv Vulnerability

Entryinfo

Created: 06/27/2014 18:04
Updated: 06/25/2021 09:03
Changes: 06/27/2014 18:04 (63), 04/26/2017 09:12 (3), 06/25/2021 09:03 (3)
Complete: 🔍

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