GNU C Library up to 2.22 catopen catalog_name memory corruption

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.
9.6	$0-$5k	0.00

Summaryinfo

A vulnerability was found in GNU C Library up to 2.22. It has been rated as problematic. Affected is the function catopen. The manipulation of the argument catalog_name leads to memory corruption. This vulnerability is referenced as CVE-2015-8779. Remote exploitation of the attack is possible. No exploit is available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in GNU C Library up to 2.22 (Software Library). It has been rated as critical. This issue affects the function catopen. The manipulation of the argument catalog_name with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

Stack-based buffer overflow in the catopen function in the GNU C Library (aka glibc or libc6) before 2.23 allows context-dependent attackers to cause a denial of service (application crash) or possibly execute arbitrary code via a long catalog name.

The weakness was published 04/19/2016 by Maksymilian Arciemowicz with CXsecurity (Website). The advisory is shared at sourceware.org. The identification of this vulnerability is CVE-2015-8779 since 01/18/2016. An attack has to be approached locally. The successful exploitation requires a simple authentication. Technical details are known, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 88767 (Debian DSA-3480-1 : eglibc - security update), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Debian Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 196484 (Ubuntu Security Notification for Eglibc, Glibc Vulnerabilities (USN-2985-1)).

Upgrading to version 2.23 eliminates this vulnerability. A possible mitigation has been published before and not just after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (88767) and SecurityFocus (BID 82244†). Similar entries are available at VDB-10583, VDB-73929, VDB-75092 and VDB-79344. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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

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: 9.8
VulDB Meta Temp Score: 9.6

VulDB Base Score: 9.8
VulDB Temp Score: 9.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

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

NVD Base Score: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Nessus ID: 88767
Nessus Name: Debian DSA-3480-1 : eglibc - security update
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 703480
OpenVAS Name: Debian Security Advisory DSA 3480-1 (eglibc - security update)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: C Library 2.23

Timelineinfo

01/18/2016 🔍
01/28/2016 +10 days 🔍
02/15/2016 +18 days 🔍
02/16/2016 +1 days 🔍
04/19/2016 +62 days 🔍
04/19/2016 +0 days 🔍
04/20/2016 +1 days 🔍
07/25/2022 +2287 days 🔍

Sourcesinfo

Vendor: gnu.org

Advisory: RHSA-2017:1916
Researcher: Maksymilian Arciemowicz
Organization: CXsecurity
Status: Not defined
Confirmation: 🔍

CVE: CVE-2015-8779 (🔍)
GCVE (CVE): GCVE-0-2015-8779
GCVE (VulDB): GCVE-100-82565
SecurityFocus: 82244 - GNU glibc CVE-2015-8779 Stack Buffer Overflow Vulnerability

See also: 🔍

Entryinfo

Created: 04/20/2016 11:04
Updated: 07/25/2022 11:38
Changes: 04/20/2016 11:04 (56), 10/14/2018 08:51 (25), 07/25/2022 11:30 (3), 07/25/2022 11:38 (1)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Discussion

Want to know what is going to be exploited?

We predict KEV entries!