Ruby up to 1.9.0 regex.c resource management

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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A vulnerability, which was classified as problematic, has been found in Ruby up to 1.9.0 (Programming Language Software). Affected by this issue is an unknown code block of the file regex.c. The manipulation with an unknown input leads to a resource management vulnerability. Using CWE to declare the problem leads to CWE-399. Impacted is availability.

The bug was discovered 08/13/2008. The weakness was released 08/14/2008 (Website). The advisory is available at This vulnerability is handled as CVE-2008-3443 since 08/01/2008. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. Technical details as well as a public exploit are known.

A public exploit has been developed in Perl. The exploit is available at It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 1 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 67751 (Oracle Linux 3 : ruby (ELSA-2008-0896)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Oracle Linux Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 165649 (SUSE Enterprise Linux Security Update dhcp-client (SUSE-SA:2009:037)).

Upgrading eliminates this vulnerability. A possible mitigation has been published 3 months after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (44688), Tenable (67751) and Exploit-DB (6239). Entries connected to this vulnerability are available at 3810, 3978, 23858 and 30376.






CPE 2.3info

CPE 2.2info


VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 4.8

VulDB Base Score: 5.3
VulDB Temp Score: 4.8
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Class: Resource management
CWE: CWE-399 / CWE-404
ATT&CK: Unknown

Local: No
Remote: Yes

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

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Nessus ID: 67751
Nessus Name: Oracle Linux 3 : ruby (ELSA-2008-0896)
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OpenVAS ID: 63099
OpenVAS Name: Debian Security Advisory DSA 1695-1 (ruby1.8, ruby1.9)
OpenVAS File: 🔍
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Qualys ID: 🔍
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Exploit-DB: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
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08/01/2008 🔍
08/13/2008 +12 days 🔍
08/13/2008 +0 days 🔍
08/13/2008 +0 days 🔍
08/14/2008 +1 days 🔍
08/14/2008 +0 days 🔍
10/12/2008 +59 days 🔍
10/21/2008 +9 days 🔍
10/21/2008 +0 days 🔍
07/12/2013 +1725 days 🔍
03/17/2015 +613 days 🔍
08/18/2019 +1615 days 🔍


Status: Not defined
Confirmation: 🔍

CVE: CVE-2008-3443 (🔍)

X-Force: 44688
SecurityTracker: 1021075
Vulnerability Center: 19676 - Ruby regex.c Remote Denial of Service via Multiple Requests to Ruby Socket, Medium
SecurityFocus: 30682 - Ruby 'regex.c' Remote Denial Of Service Vulnerability
Secunia: 31430
OSVDB: 47800 - CVE-2008-3443 - Ruby - Denial of Service Issue
Vupen: ADV-2009-1297

scip Labs:
See also: 🔍


Created: 03/17/2015 12:19 PM
Updated: 08/18/2019 08:53 AM
Changes: 03/17/2015 12:19 PM (79), 08/18/2019 08:53 AM (13)
Complete: 🔍


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