Xinetd up to 2.3.14 Access Restriction builtins.c input validation

CVSS Meta Temp Score
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CTI Interest Score
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5.1$0-$5k0.00

Summaryinfo

A vulnerability was found in Xinetd up to 2.3.14. It has been declared as critical. The impacted element is an unknown function of the file builtins.c of the component Access Restriction. Executing a manipulation can lead to input validation. This vulnerability is tracked as CVE-2012-0862. No exploit exists. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in Xinetd up to 2.3.14 (Multimedia Player Software). It has been declared as critical. This vulnerability affects some unknown processing of the file builtins.c of the component Access Restriction. The manipulation with an unknown input leads to a input validation vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect confidentiality. CVE summarizes:

builtins.c in Xinetd before 2.3.15 does not check the service type when the tcpmux-server service is enabled, which exposes all enabled services and allows remote attackers to bypass intended access restrictions via a request to tcpmux port 1.

The weakness was disclosed 06/04/2012 as Bug 790940 as confirmed bug report (Bugzilla). The advisory is shared for download at bugzilla.redhat.com. This vulnerability was named CVE-2012-0862 since 01/19/2012. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 70364 (Scientific Linux Security Update : xinetd on SL5.x i386/x86_64), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Scientific Linux Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 167204 (SUSE Enterprise Linux Security Update for xinetd (SUSE-SU-2014:0871-1)).

Upgrading to version 2.3.10 eliminates this vulnerability.

The vulnerability is also documented in the databases at X-Force (75965), Tenable (70364), SecurityFocus (BID 53720†), OSVDB (81774†) and SecurityTracker (ID 1027050†). The entry VDB-65248 is pretty similar. Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.1

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
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: Input validation
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 70364
Nessus Name: Scientific Linux Security Update : xinetd on SL5.x i386/x86_64
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

OpenVAS ID: 72502
OpenVAS Name: FreeBSD Ports: xinetd
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Xinetd 2.3.10

Timelineinfo

01/19/2012 🔍
05/09/2012 +111 days 🔍
05/29/2012 +20 days 🔍
05/29/2012 +0 days 🔍
06/04/2012 +6 days 🔍
06/04/2012 +0 days 🔍
06/18/2012 +14 days 🔍
10/10/2013 +479 days 🔍
03/23/2015 +529 days 🔍
12/03/2021 +2447 days 🔍

Sourcesinfo

Advisory: Bug 790940
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2012-0862 (🔍)
GCVE (CVE): GCVE-0-2012-0862
GCVE (VulDB): GCVE-100-60892

OVAL: 🔍

X-Force: 75965
SecurityFocus: 53720 - Xinetd CVE-2012-0862 Security Bypass Vulnerability
OSVDB: 81774
SecurityTracker: 1027050 - Xinetd TCPMUX Bug Lets Remote Users Access Restricted Services
Vulnerability Center: 35352 - builtins.c in Xinetd <2.3.15 Remote Security Bypass Vulnerability via a Request to tcpmux Port 1, Medium

See also: 🔍

Entryinfo

Created: 03/23/2015 16:50
Updated: 12/03/2021 09:45
Changes: 03/23/2015 16:50 (68), 04/13/2017 17:23 (15), 12/03/2021 09:45 (3)
Complete: 🔍
Cache ID: 216:A7B:103

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