GNU C Library up to 2.12.2 proftpd.gnu.c denial of service

CVSS Meta Temp Score
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CTI Interest Score
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5.0$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic has been found in GNU C Library. The impacted element is an unknown function of the file proftpd.gnu.c. This manipulation causes denial of service. This vulnerability is handled as CVE-2010-4051. Additionally, an exploit exists.

Detailsinfo

A vulnerability was found in GNU C Library (Software Library). It has been declared as problematic. Affected by this vulnerability is some unknown processing of the file proftpd.gnu.c. The manipulation with an unknown input leads to a denial of service vulnerability. The CWE definition for the vulnerability is CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. As an impact it is known to affect availability. The summary by CVE is:

The regcomp implementation in the GNU C Library (aka glibc or libc6) through 2.11.3, and 2.12.x through 2.12.2, allows context-dependent attackers to cause a denial of service (application crash) via a regular expression containing adjacent bounded repetitions that bypass the intended RE_DUP_MAX limitation, as demonstrated by a {10,}{10,}{10,}{10,}{10,} sequence in the proftpd.gnu.c exploit for ProFTPD, related to a "RE_DUP_MAX overflow."

The weakness was released 01/13/2011 by Maksymilian Arciemowicz as confirmed advisory (CERT.org). The advisory is shared at kb.cert.org. This vulnerability is known as CVE-2010-4051. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details and also a public exploit are known.

A public exploit has been developed by Maksymilian Arciemowicz in ANSI C and been published before and not just after the advisory. It is possible to download the exploit at securityfocus.com. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 6 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 72001 (Juniper Junos CLI libc recomp() rpd DoS (JSA10612)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Junos Local Security Checks.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the databases at Exploit-DB (15935), Tenable (72001), SecurityFocus (BID 45233†), SecurityTracker (ID 1024832†) and Vulnerability Center (SBV-31375†). Entry connected to this vulnerability is available at VDB-56042. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.0

VulDB Base Score: 5.3
VulDB Temp Score: 5.0
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: Denial of service
CWE: CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

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

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 72001
Nessus Name: Juniper Junos CLI libc recomp() rpd DoS (JSA10612)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

OpenVAS ID: 861171
OpenVAS Name: Junos Stack Exhaustion Denial of Service Vulnerability
OpenVAS File: 🔍
OpenVAS Family: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

10/22/2010 🔍
12/07/2010 +46 days 🔍
12/07/2010 +0 days 🔍
01/07/2011 +31 days 🔍
01/07/2011 +0 days 🔍
01/13/2011 +6 days 🔍
01/13/2011 +0 days 🔍
05/09/2011 +116 days 🔍
01/16/2014 +983 days 🔍
03/19/2015 +427 days 🔍
12/29/2024 +3573 days 🔍

Sourcesinfo

Vendor: gnu.org

Advisory: kb.cert.org
Researcher: Maksymilian Arciemowicz
Status: Confirmed

CVE: CVE-2010-4051 (🔍)
GCVE (CVE): GCVE-0-2010-4051
GCVE (VulDB): GCVE-100-56041
CERT: 🔍
SecurityFocus: 45233 - GNU glibc 'regcomp()' Stack Exhaustion Denial Of Service Vulnerability
Secunia: 42547
SecurityTracker: 1024832
Vulnerability Center: 31375 - GNU C Library \x3C\x3D2.11.3 and 2.12-2.12.2 Remote Denial of Service Vulnerability, Medium

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

Entryinfo

Created: 03/19/2015 23:27
Updated: 12/29/2024 23:07
Changes: 03/19/2015 23:27 (58), 03/22/2017 09:41 (20), 10/11/2021 16:02 (4), 10/11/2021 16:09 (1), 06/10/2024 12:30 (15), 12/29/2024 23:07 (2)
Complete: 🔍
Cache ID: 216::103

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

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