FreeBSD 4.4/4.5 File Descriptors privileges management

CVSS Meta Temp Score
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CTI Interest Score
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7.9$0-$5k0.00

Summaryinfo

A vulnerability labeled as problematic has been found in FreeBSD 4.4/4.5. Affected by this vulnerability is an unknown functionality of the component File Descriptors. Such manipulation leads to privileges management. This vulnerability is uniquely identified as CVE-2002-0572. Moreover, an exploit is present.

Detailsinfo

A vulnerability was found in FreeBSD 4.4/4.5 (Operating System) and classified as critical. Affected by this issue is an unknown part of the component File Descriptors. The manipulation with an unknown input leads to a privileges management vulnerability. Using CWE to declare the problem leads to 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. Impacted is confidentiality, integrity, and availability. CVE summarizes:

FreeBSD 4.5 and earlier, and possibly other BSD-based operating systems, allows local users to write to or read from restricted files by closing the file descriptors 0 (standard input), 1 (standard output), or 2 (standard error), which may then be reused by a called setuid process that intended to perform I/O on normal files.

The weakness was disclosed 04/22/2002 by Joost Pol as confirmed advisory (CERT.org). The advisory is shared for download at kb.cert.org. This vulnerability is handled as CVE-2002-0572. The exploitation is known to be easy. The attack needs to be approached locally. No form of authentication is required for exploitation. Technical details are unknown but a public exploit is available. The MITRE ATT&CK project declares the attack technique as T1068.

A public exploit has been developed in ANSI C and been published 1 days after the advisory. The exploit is available at downloads.securityfocus.com. It is declared as proof-of-concept. As 0-day the estimated underground price was around $5k-$25k.

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 databases at X-Force (8920), Exploit-DB (21407), SecurityFocus (BID 4568†) and OSVDB (6095†). The entry VDB-18706 is pretty similar. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

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Version

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.4
VulDB Meta Temp Score: 7.9

VulDB Base Score: 8.4
VulDB Temp Score: 7.9
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

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

Physical: Partially
Local: Yes
Remote: No

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

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Exploit-DB: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍
Exploit Delay Time: 🔍

Timelineinfo

04/22/2002 🔍
04/22/2002 +0 days 🔍
04/23/2002 +1 days 🔍
07/03/2002 +71 days 🔍
04/09/2004 +645 days 🔍
07/11/2014 +3745 days 🔍
01/21/2025 +3847 days 🔍

Sourcesinfo

Product: freebsd.org

Advisory: kb.cert.org
Researcher: Joost Pol
Status: Confirmed

CVE: CVE-2002-0572 (🔍)
GCVE (CVE): GCVE-0-2002-0572
GCVE (VulDB): GCVE-100-18392
CERT: 🔍
X-Force: 8920
SecurityFocus: 4568
OSVDB: 6095 - Multiple BSD exec C File Descriptor Privilege Escalation

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

Entryinfo

Created: 07/11/2014 14:22
Updated: 01/21/2025 07:48
Changes: 07/11/2014 14:22 (53), 06/07/2018 09:03 (8), 07/01/2024 13:27 (17), 01/21/2025 07:48 (2)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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