PT-2002-2391 · Freebsd · Freebsd

Published 2002-12-31 · Updated 2017-07-11 · CVE-2002-1667

Positive Technologies (AI Summary)

CVSS v2.0

2.1

Low

Base vector

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

Name of the Vulnerable Software and Affected Versions FreeBSD versions 4.5 and earlier

Description The issue is related to the virtual memory management system, which does not properly check the existence of a VM object during page invalidation. This allows local users to cause a denial of service by calling msync on an unaccessed memory map created with MAP ANON and MAP NOSYNC flags.

Recommendations For FreeBSD versions 4.5 and earlier, consider updating to a newer version to resolve the issue. As a temporary workaround, avoid using the msync function on unaccessed memory maps created with MAP ANON and MAP NOSYNC flags to minimize the risk of a denial of service.

Fix

Related Identifiers

CVE-2002-1667

Affected Products

Freebsd

References · 3

• https://nvd.nist.gov/vuln/detail/CVE-2002-1667 · Security Note
• ftp://ftp.freebsd.org/pub/FreeBSD/CERT/advisories/FreeBSD-SA-02:22.mmap.asc · Vendor Advisory
• https://exchange.xforce.ibmcloud.com/vulnerabilities/8921 · Note