FreeBSD 4.0/4.1/4.2/4.3 Signal exec privileges management

CVSS Meta Temp Score
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CTI Interest Score
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7.6$0-$5k0.00

Summaryinfo

A vulnerability identified as problematic has been detected in FreeBSD 4.0/4.1/4.2/4.3. This issue affects the function exec of the component Signal Handler. Performing a manipulation results in privileges management. This vulnerability is reported as CVE-2001-1180. Moreover, an exploit is present. You should upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, was found in FreeBSD 4.0/4.1/4.2/4.3 (Operating System). This affects the function exec of the component Signal Handler. The manipulation with an unknown input leads to a privileges management vulnerability. CWE is classifying the issue as 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. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

FreeBSD 4.3 does not properly clear shared signal handlers when executing a process, which allows local users to gain privileges by calling rfork with a shared signal handler, having the child process execute a setuid program, and sending a signal to the child.

The weakness was disclosed 07/10/2001 by Georgi Guninski as confirmed advisory (CERT.org). The advisory is shared at kb.cert.org. This vulnerability is uniquely identified as CVE-2001-1180. The exploitability is told to be easy. An attack has to be approached locally. No form of authentication is needed for exploitation. Technical details and a exploit are known. MITRE ATT&CK project uses the attack technique T1068 for this issue.

After immediately, there has been an exploit disclosed. It is declared as proof-of-concept.

Upgrading eliminates this vulnerability.

The vulnerability is also documented in the databases at X-Force (6829), SecurityFocus (BID 3007†), OSVDB (1897†) and Vulnerability Center (SBV-22763†). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

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Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.4
VulDB Meta Temp Score: 7.6

VulDB Base Score: 8.4
VulDB Temp Score: 7.6
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: 🔍
Status: Proof-of-Concept

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍
Exploit Delay Time: 🔍

Timelineinfo

07/10/2001 🔍
07/10/2001 +0 days 🔍
07/10/2001 +0 days 🔍
07/10/2001 +0 days 🔍
07/10/2001 +0 days 🔍
02/21/2003 +591 days 🔍
07/05/2009 +2325 days 🔍
07/07/2014 +1828 days 🔍
12/15/2024 +3814 days 🔍

Sourcesinfo

Product: freebsd.org

Advisory: kb.cert.org
Researcher: Georgi Guninski
Status: Confirmed

CVE: CVE-2001-1180 (🔍)
GCVE (CVE): GCVE-0-2001-1180
GCVE (VulDB): GCVE-100-16977
CERT: 🔍
X-Force: 6829
SecurityFocus: 3007 - FreeBSD exec() Inherited Signal Handler Vulnerability
OSVDB: 1897 - FreeBSD exec() Inherited Signal Handler
Vulnerability Center: 22763 - FreeBSD <= 4.3 Rfork Shared Signal Handler Local Arbitrary Code Execution Vulnerability, High

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

Entryinfo

Created: 07/07/2014 12:57
Updated: 12/15/2024 05:32
Changes: 07/07/2014 12:57 (55), 02/11/2017 10:21 (9), 12/15/2024 05:32 (17)
Complete: 🔍
Cache ID: 216:590:103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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