Perl 5.10.1 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 marked as problematic has been reported in Perl 5.10.1. Impacted is an unknown function. Performing a manipulation results in denial of service. This vulnerability is cataloged as CVE-2009-3626. There is no exploit available.

Detailsinfo

A vulnerability was found in Perl 5.10.1 (Programming Language Software). It has been classified as problematic. This affects an unknown code. 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. The summary by CVE is:

Perl 5.10.1 allows context-dependent attackers to cause a denial of service (application crash) via a UTF-8 character with a large, invalid codepoint, which is not properly handled during a regular-expression match.

The weakness was shared 10/22/2009 by Martin (Website). The advisory is shared at vupen.com. This vulnerability is uniquely identified as CVE-2009-3626 since 10/09/2009. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Neither technical details nor an exploit are publicly available.

It is declared as proof-of-concept. The vulnerability scanner Nessus provides a plugin with the ID 266244 (NewStart CGSL MAIN 6.06 : perl Multiple Vulnerabilities (NS-SA-2025-0211)), which helps to determine the existence of the flaw in a target environment. The commercial vulnerability scanner Qualys is able to test this issue with plugin 116904 (ActivePerl UTF-8 Denial of Service Vulnerability).

A possible mitigation has been published 3 days after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (53939), Tenable (266244), SecurityFocus (BID 36812†), OSVDB (59283†) and Secunia (SA37144†). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

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Name

Version

License

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

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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
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Exploitinginfo

Class: Denial of service
CWE: CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Proof-of-Concept

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 266244
Nessus Name: NewStart CGSL MAIN 6.06 : perl Multiple Vulnerabilities (NS-SA-2025-0211)

OpenVAS ID: 800967
OpenVAS Name: Perl UTF-8 Regular Expression Processing DoS Vulnerability (Windows)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Timelineinfo

10/09/2009 🔍
10/22/2009 +13 days 🔍
10/25/2009 +3 days 🔍
10/25/2009 +0 days 🔍
10/25/2009 +0 days 🔍
10/26/2009 +1 days 🔍
10/26/2009 +0 days 🔍
10/26/2009 +0 days 🔍
10/29/2009 +2 days 🔍
03/01/2010 +123 days 🔍
03/18/2015 +1843 days 🔍
10/02/2025 +3851 days 🔍

Sourcesinfo

Advisory: vupen.com⛔
Researcher: Martin
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2009-3626 (🔍)
GCVE (CVE): GCVE-0-2009-3626
GCVE (VulDB): GCVE-100-50649
X-Force: 53939
SecurityFocus: 36812 - Perl UTF-8 Regular Expression Processing Remote Denial of Service Vulnerability
Secunia: 37144 - Perl UTF-8 Denial of Service Vulnerability, Moderately Critical
OSVDB: 59283 - Perl Interpreter RegEx UTF-8 Character Handling DoS
SecurityTracker: 1023077 - Perl UTF-8 Regex Processing Bug Lets Users Deny Service
Vulnerability Center: 24941 - ActivePerl Prior to 5.10.1 build 1007 Remote DoS Vulnerability via UTF-8 Character, Medium
Vupen: ADV-2009-3023

Entryinfo

Created: 03/18/2015 15:15
Updated: 10/02/2025 13:11
Changes: 03/18/2015 15:15 (61), 02/21/2017 17:21 (17), 02/16/2025 04:50 (18), 10/02/2025 13:11 (2)
Complete: 🔍
Cache ID: 216::103

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

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