National Vulnerability Database (NVD) National Vulnerability Database (CVE-2013-0238)

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Last updated: Sun May 26 01:52:00 EDT 2013

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Vulnerability Summary for CVE-2013-0238

Original release date:02/13/2013

Last revised:02/13/2013

Source: US-CERT/NIST

Overview

The try_parse_v4_netmask function in hostmask.c in IRCD-Hybrid before 8.0.6 does not properly validate masks, which allows remote attackers to cause a denial of service (crash) via a mask that causes a negative number to be parsed.

Impact

CVSS Severity (version 2.0):

CVSS v2 Base Score:5.0 (MEDIUM) (AV:N/AC:L/Au:N/C:N/I:N/A:P) (legend)

Impact Subscore: 2.9

Exploitability Subscore: 10.0

CVSS Version 2 Metrics:

Access Vector: Network exploitable

Access Complexity: Low

Authentication: Not required to exploit

Impact Type:Allows disruption of serviceUnknown

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External Source: XF

Name: ircdhybrid-tryparsev4netmask-dos(81695)

Hyperlink:http://xforce.iss.net/xforce/xfdb/81695

External Source: BID

Name: 57610

Hyperlink:http://www.securityfocus.com/bid/57610

External Source: MLIST

Name: [oss-security] 20130129 ircd-hybrid: Denial of service vulnerability in hostmask.c:try_parse_v4_netmask()

Hyperlink:http://www.openwall.com/lists/oss-security/2013/01/29/8

External Source: DEBIAN

Name: DSA-2618

Hyperlink:http://www.debian.org/security/2013/dsa-2618