IRCD-Hybrid up to 8.0.5 hostmask.c try_parse_v4_netmask input validation

CVSS Meta Temp Score
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4.8$0-$5k0.00

A vulnerability, which was classified as problematic, has been found in IRCD-Hybrid up to 8.0.5. This issue affects the function try_parse_v4_netmask of the file hostmask.c. The manipulation with an unknown input leads to a input validation vulnerability. Using CWE to declare the problem leads to CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. Impacted is availability. The summary by CVE is:

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.

The weakness was released 02/12/2013 (Website). It is possible to read the advisory at wiki.mageia.org. The identification of this vulnerability is CVE-2013-0238 since 12/06/2012. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details as well as a public exploit are known.

A public exploit has been developed by kingcope in Perl and been published 3 months after the advisory. The exploit is available at securityfocus.com. It is declared as proof-of-concept. The vulnerability scanner Nessus provides a plugin with the ID 66105 (Mandriva Linux Security Advisory : ircd-hybrid (MDVSA-2013:093)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Mandriva Local Security Checks.

Upgrading to version 7.3.0 eliminates this vulnerability.

The vulnerability is also documented in the databases at X-Force (81695), Tenable (66105) and Exploit-DB (24951).

Productinfo

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Version

CPE 2.3info

CPE 2.2info

CVSSv4info

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CVSSv3info

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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CVSSv2info

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Exploitinginfo

Class: Input validation
CWE: CWE-20
ATT&CK: Unknown

Local: No
Remote: Yes

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

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Nessus ID: 66105
Nessus Name: Mandriva Linux Security Advisory : ircd-hybrid (MDVSA-2013:093)
Nessus File: 🔍
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OpenVAS ID: 892618
OpenVAS Name: Debian Security Advisory DSA 2618-1 (ircd-hybrid - denial of service
OpenVAS File: 🔍
OpenVAS Family: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

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Countermeasuresinfo

Recommended: Upgrade
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Upgrade: IRCD-Hybrid 7.3.0

Timelineinfo

12/06/2012 🔍
01/29/2013 +54 days 🔍
01/29/2013 +0 days 🔍
01/30/2013 +1 days 🔍
02/12/2013 +13 days 🔍
02/12/2013 +0 days 🔍
02/20/2013 +8 days 🔍
04/12/2013 +51 days 🔍
04/12/2013 +0 days 🔍
04/20/2013 +8 days 🔍
03/24/2015 +703 days 🔍
12/29/2021 +2472 days 🔍

Sourcesinfo

Advisory: dsa-2618
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2013-0238 (🔍)
OVAL: 🔍

X-Force: 81695
Vulnerability Center: 38503 - IRCD-Hybrid <8.0.6 Remote Denial of Service due to try_parse_v4_netmask Improperly Validating Masks, Medium
SecurityFocus: 57610 - IRCD-Hybrid 'try_parse_v4_netmask()' Denial of Service Vulnerability
Secunia: 51948 - IRCD-Hybrid "try_parse_v4_netmask()" Denial of Service Vulnerability, Less Critical
OSVDB: 89623

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

Entryinfo

Created: 03/24/2015 12:22
Updated: 12/29/2021 09:12
Changes: 03/24/2015 12:22 (71), 04/24/2017 20:13 (14), 12/29/2021 09:06 (3), 12/29/2021 09:08 (1), 12/29/2021 09:12 (1)
Complete: 🔍

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