FreeBSD 8.3/9.0 ftpd GLOB_LIMIT denial of service

CVSS Meta Temp Score
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CTI Interest Score
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6.5$0-$5k0.00

A vulnerability classified as critical has been found in FreeBSD 8.3/9.0 (Operating System). Affected is the function GLOB_LIMIT of the component ftpd. The manipulation with an unknown input leads to a denial of service vulnerability. CWE is classifying the issue as CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. This is going to have an impact on availability. CVE summarizes:

Unspecified vulnerability in the FTP Server in Oracle Solaris 8, 9, 10, and 11 Express allows remote attackers to affect availability. NOTE: the previous information was obtained from the January 2011 CPU. Oracle has not commented on claims from a reliable researcher that this is an issue in the glob implementation in libc that allows remote authenticated users to cause a denial of service (CPU and memory consumption) via crafted glob expressions that do not match any pathnames.

The weakness was presented 02/19/2013 by Maksymilian Arciemowicz as FreeBSD-SA-13:02.libc as confirmed advisory (Website). The advisory is available at freebsd.org. This vulnerability is traded as CVE-2010-2632 since 07/06/2010. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Technical details and a public exploit are known.

A public exploit has been developed by Maksymilian Arciemowicz and been published before and not just after the advisory. The exploit is shared for download at securityfocus.com. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 104 days. During that time the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 70481 (Juniper Junos GNU libc glob Remote DoS (JSA10598)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Junos Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 119352 (Apple Mac OS X v10.6.8 and Security Update 2011-004 Not Installed (APPLE-SA-2011-06-23-1)).

Upgrading to version 9.1 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability. Furthermore it is possible to detect and prevent this kind of attack with TippingPoint and the filter 11177.

The vulnerability is also documented in the databases at X-Force (64798), Tenable (70481) and Exploit-DB (15215). See 4241, 4244, 4245 and 4246 for similar entries.

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CPE 2.3info

CPE 2.2info

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CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 6.5

VulDB Base Score: 7.5
VulDB Temp Score: 6.5
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CVSSv2info

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Exploitinginfo

Class: Denial of service
CWE: CWE-404
ATT&CK: T1499

Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Author: Maksymilian Arciemowicz
Download: 🔍

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Nessus ID: 70481
Nessus Name: Juniper Junos GNU libc glob Remote DoS (JSA10598)
Nessus File: 🔍
Nessus Risk: 🔍
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Nessus Port: 🔍

OpenVAS ID: 831351
OpenVAS Name: Mandriva Update for vsftpd MDVSA-2011:049 (vsftpd)
OpenVAS File: 🔍
OpenVAS Family: 🔍

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Exploit-DB: 🔍

Threat Intelligenceinfo

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Countermeasuresinfo

Recommended: Upgrade
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Upgrade: FreeBSD 9.1
TippingPoint: 🔍

Timelineinfo

07/06/2010 🔍
08/20/2010 +45 days 🔍
10/07/2010 +48 days 🔍
10/07/2010 +0 days 🔍
01/18/2011 +103 days 🔍
01/18/2011 +0 days 🔍
01/19/2011 +1 days 🔍
01/19/2011 +0 days 🔍
02/19/2013 +762 days 🔍
02/19/2013 +0 days 🔍
08/13/2013 +175 days 🔍
10/17/2013 +65 days 🔍
05/21/2021 +2773 days 🔍

Sourcesinfo

Product: freebsd.org

Advisory: FreeBSD-SA-13:02.libc
Researcher: Maksymilian Arciemowicz
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2010-2632 (🔍)
OVAL: 🔍
IAVM: 🔍

X-Force: 64798 - Oracle Solaris FTP denial of service, Medium Risk
SecurityTracker: 1024975 - Solaris Multiple Flaws Let Remote Users Gain Full Control and Local Users Partially Access and Modify Data and Deny Service
Vulnerability Center: 29269 - [cpujan2011-194091] Oracle Solaris 8, 9 ,10 and 11 Express FTP Remote Unspecified Vulnerability, High
SecurityFocus: 42599 - Oracle MySQL 'EXPLAIN' Denial Of Service Vulnerability
Secunia: 42984 - Oracle Solaris Multiple Vulnerabilities, Moderately Critical
OSVDB: 96158
Vupen: ADV-2011-0151

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

Entryinfo

Created: 08/13/2013 16:57
Updated: 05/21/2021 10:37
Changes: 08/13/2013 16:57 (90), 03/13/2017 12:34 (14), 05/21/2021 10:37 (3)
Complete: 🔍

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