GNU C Library up to 2.23 libresolv resource management

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
7.3	$0-$5k	0.00

Summaryinfo

A vulnerability was found in GNU C Library up to 2.23. It has been declared as problematic. This impacts an unknown function of the component libresolv. Such manipulation leads to resource management. This vulnerability is uniquely identified as CVE-2016-5417. The attack can be launched remotely. No exploit exists. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in GNU C Library up to 2.23 (Software Library) and classified as critical. Affected by this issue is some unknown processing of the component libresolv. 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 weakness was disclosed 08/04/2016 by Matthias Schiffer as The GNU C Library version 2.24 is now available as not defined posting (Mailing List). The advisory is shared for download at sourceware.org. This vulnerability is handled as CVE-2016-5417 since 06/10/2016. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. There are neither technical details nor an exploit publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 97856 (Ubuntu 12.04 LTS / 14.04 LTS / 16.04 LTS : eglibc, glibc vulnerabilities (USN-3239-1)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Ubuntu Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 196734 (Ubuntu Security Notification for Eglibc, Glibc Vulnerabilities (USN-3239-1)).

Upgrading to version 2.24 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (97856) and SecurityFocus (BID 92257†). The entries VDB-92506, VDB-98122, VDB-98292 and VDB-98293 are pretty similar. Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

• Software Library

Vendor

• GNU

Name

• C Library

Version

• 2.0
• 2.1
• 2.2
• 2.3
• 2.4
• 2.5
• 2.6
• 2.7
• 2.8
• 2.9
• 2.10
• 2.11
• 2.12
• 2.13
• 2.14
• 2.15
• 2.16
• 2.17
• 2.18
• 2.19
• 2.20
• 2.21
• 2.22
• 2.23

License

• open-source

Website

• Vendor: https://www.gnu.org/

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 7.3

VulDB Base Score: 7.5
VulDB Temp Score: 7.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

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💳	💳	💳	💳	💳	💳
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Resource management
CWE: CWE-399 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
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Nessus ID: 97856
Nessus Name: Ubuntu 12.04 LTS / 14.04 LTS / 16.04 LTS : eglibc, glibc vulnerabilities (USN-3239-1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 841810
OpenVAS Name: Ubuntu Update for eglibc USN-3239-3
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Upgrade: C Library 2.24
Patch: 2212c1420c92a33b0e0bd9a34938c9814a56c0f7

Timelineinfo

06/10/2016 🔍
08/02/2016 +53 days 🔍
08/04/2016 +2 days 🔍
08/04/2016 +0 days 🔍
08/08/2016 +4 days 🔍
02/16/2017 +192 days 🔍
03/21/2017 +33 days 🔍
09/12/2022 +2001 days 🔍

Sourcesinfo

Vendor: gnu.org

Advisory: The GNU C Library version 2.24 is now available
Researcher: Matthias Schiffer
Status: Not defined
Confirmation: 🔍

CVE: CVE-2016-5417 (🔍)
GCVE (CVE): GCVE-0-2016-5417
GCVE (VulDB): GCVE-100-90572
SecurityFocus: 92257 - GNU glibc '__res_vinit()' Function Information Disclosure Vulnerability

See also: 🔍

Entryinfo

Created: 08/08/2016 12:44
Updated: 09/12/2022 14:02
Changes: 08/08/2016 12:44 (69), 03/21/2019 17:05 (12), 09/12/2022 14:02 (6)
Complete: 🔍
Cache ID: 216:644:103

Once again VulDB remains the best source for vulnerability data.

Discussion

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