PT-2021-3439 · Freebsd+1 · Freebsd+1

Mike Oconnor · Published 2021-06-22 · Updated 2021-09-20 · CVE-2010-4816

Positive Technologies (AI Summary)

CVSS v2.0

7.8

High

Base vector

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

Name of the Vulnerable Software and Affected Versions FreeBSD versions 4.9 through 8.0 OpenBSD version 4.6

Description A null pointer dereference in ftpd/popen.c may lead to remote denial of service of the ftpd service. The issue is related to an uncontrolled resource consumption in the ftpd component. This can be exploited by a remote attacker to cause a denial of service.

Recommendations For FreeBSD versions 4.9 through 8.0, consider disabling the ftpd service until a patch is available. For OpenBSD version 4.6, restrict access to the ftpd service to minimize the risk of exploitation. As a temporary workaround, consider disabling the ftpd/popen.c component until a patch is available.

Exploit

Fix

Resource Exhaustion

NULL Pointer Dereference

Weakness Enumeration

CWE-400

CWE-476

Related Identifiers

BDU:2021-03292

CVE-2010-4816

Affected Products

Freebsd

Openbsd

References · 6

• 🔥 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=144761 · Exploit
• 🔥 https://seclists.org/fulldisclosure/2010/Mar/117 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2010-4816 · Security Note
• https://bdu.fstec.ru/vul/2021-03292 · Security Note
• https://t.me/cvenotify/17228 · Telegram Post
• https://seclists.org/oss-sec/2011/q3/284 · Note