Andries Brouwer util-linux 2.11m script Command symlink

CVSS Meta Temp Score
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CTI Interest Score
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3.8$0-$5k0.00

A vulnerability, which was classified as problematic, has been found in Andries Brouwer util-linux 2.11m. This issue affects an unknown code block of the component script Command. The manipulation with an unknown input leads to a symlink vulnerability. Using CWE to declare the problem leads to CWE-61. The product, when opening a file or directory, does not sufficiently account for when the file is a symbolic link that resolves to a target outside of the intended control sphere. This could allow an attacker to cause the product to operate on unauthorized files. Impacted is integrity. The summary by CVE is:

script command in the util-linux package before 2.11n allows local users to overwrite arbitrary files by setting a hardlink from the typescript log file to any file on the system, then having root execute the script command.

The bug was discovered 12/12/2001. The weakness was presented 12/31/2001 (Website). The advisory is shared at seclists.org. The identification of this vulnerability is CVE-2001-1494 since 06/21/2005. The exploitation is known to be easy. An attack has to be approached locally. No form of authentication is needed for a successful exploitation. Neither technical details nor an exploit are publicly available.

The vulnerability was handled as a non-public zero-day exploit for at least 19 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 20048 (RHEL 2.1 / 3 / 4 : util-linux and mount (RHSA-2005:782)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Red Hat Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 117813 (CentOS Security Update for util (CESA-2005:782)).

Upgrading to version 2.11n eliminates this vulnerability. A possible mitigation has been published 5 years after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (7718) and Tenable (20048). See 26278 for similar entry.

Productinfo

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Version

CPE 2.3info

CPE 2.2info

CVSSv4info

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CVSSv3info

VulDB Meta Base Score: 4.0
VulDB Meta Temp Score: 3.8

VulDB Base Score: 4.0
VulDB Temp Score: 3.8
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VulDB Reliability: 🔍

CVSSv2info

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Exploitinginfo

Class: Symlink
CWE: CWE-61 / CWE-59
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ATT&CK: 🔍

Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

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Nessus ID: 20048
Nessus Name: RHEL 2.1 / 3 / 4 : util-linux and mount (RHSA-2005:782)
Nessus File: 🔍
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Threat Intelligenceinfo

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Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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Upgrade: util-linux 2.11n

Timelineinfo

12/12/2001 🔍
12/12/2001 +0 days 🔍
12/12/2001 +0 days 🔍
12/31/2001 +19 days 🔍
12/31/2001 +0 days 🔍
06/21/2005 +1268 days 🔍
09/13/2005 +84 days 🔍
10/11/2005 +28 days 🔍
10/19/2005 +8 days 🔍
05/26/2009 +1315 days 🔍
07/11/2014 +1872 days 🔍
09/05/2019 +1882 days 🔍

Sourcesinfo

Advisory: seclists.org
Status: Not defined

CVE: CVE-2001-1494 (🔍)
OVAL: 🔍

X-Force: 7718
Vulnerability Center: 22195 - Util-Linux Package < 2.11n Local File Overwrite Vulnerability, High
SecurityFocus: 16280 - Util-Linux Script Command Arbitrary File Overwrite Vulnerability
Secunia: 16785 - util-linux umount "-r" Re-Mounting Security Issue, Not Critical
OSVDB: 19934 - CVE-2001-1494 - Util-Linux - File Modification Issue

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Entryinfo

Created: 07/11/2014 13:25
Updated: 09/05/2019 08:13
Changes: 07/11/2014 13:25 (78), 09/05/2019 08:13 (4)
Complete: 🔍

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