PT-2001-2315 · Freebsd · Freebsd

Published 2001-07-10 · Updated 2017-10-10 · CVE-2001-1180

Positive Technologies (AI Summary)

CVSS v2.0

7.2

High

Base vector

AV:L/AC:L/Au:N/C:C/I:C/A:C

Name of the Vulnerable Software and Affected Versions FreeBSD version 4.3

Description The issue arises from improper clearing of shared signal handlers when executing a process. This 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.

Recommendations For FreeBSD version 4.3, consider updating to a newer version that properly clears shared signal handlers to prevent privilege escalation. As a temporary workaround, restrict the use of setuid programs and shared signal handlers to minimize the risk of exploitation.

Exploit

Fix

Related Identifiers

CVE-2001-1180

Affected Products

Freebsd

References · 8

• 🔥 http://securityfocus.com/bid/3007 · Exploit
• 🔥 http://archives.neohapsis.com/archives/bugtraq/2001-07/0179.html · Exploit
• http://kb.cert.org/vuls/id/943633 · Patch
• ftp://ftp.freebsd.org/pub/FreeBSD/CERT/advisories/FreeBSD-SA-01:42.signal.v1.1.asc · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2001-1180 · Security Note
• http://ciac.llnl.gov/ciac/bulletins/l-111.shtml · Note
• https://exchange.xforce.ibmcloud.com/vulnerabilities/6829 · Note
• http://osvdb.org/1897 · Note