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.
5.3	$0-$5k	0.00

A vulnerability classified as problematic has been found in libgit2 up to 0.24.2. Affected is the function git_commit_message of the file oid.c of the component Object File Handler. The manipulation with an unknown input leads to a out-of-bounds vulnerability. CWE is classifying the issue as CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. This is going to have an impact on availability. CVE summarizes:

The git_commit_message function in oid.c in libgit2 before 0.24.3 allows remote attackers to cause a denial of service (out-of-bounds read) via a cat-file command with a crafted object file.

The bug was discovered 10/08/2016. The weakness was shared 02/03/2017 by Gustavo Grieco (Website). The advisory is available at lists.opensuse.org. This vulnerability is traded as CVE-2016-8568 since 10/08/2016. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Technical details are known, but there is no available exploit.

The vulnerability was handled as a non-public zero-day exploit for at least 65 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 95756 (openSUSE Security Update : libgit2 (openSUSE-2016-1450)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family SuSE Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 169590 (OpenSuSE Security Update for libgit2 (openSUSE-SU-2016:3097-1)).

Upgrading to version 0.24.3 eliminates this vulnerability. A possible mitigation has been published even before and not after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (95756). The entry 96535 is related to this item.

Productinfo

Name

• libgit2

Version

• 0.24.0
• 0.24.1
• 0.24.2

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.4
VulDB Meta Temp Score: 5.3

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.5
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: Out-of-bounds
CWE: CWE-125 / CWE-119
ATT&CK: Unknown

Local: No
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: 95756
Nessus Name: openSUSE Security Update : libgit2 (openSUSE-2016-1450)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 866198
OpenVAS Name: Fedora Update for libgit2 FEDORA-2016-505d7fe198
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: libgit2 0.24.3

Timelineinfo

10/08/2016 🔍
10/08/2016 +0 days 🔍
10/08/2016 +0 days 🔍
12/12/2016 +65 days 🔍
12/13/2016 +1 days 🔍
02/03/2017 +52 days 🔍
02/03/2017 +0 days 🔍
02/03/2017 +0 days 🔍
11/11/2022 +2107 days 🔍

Sourcesinfo

Advisory: 3936
Researcher: Gustavo Grieco
Status: Not defined
Confirmation: 🔍

CVE: CVE-2016-8568 (🔍)
SecurityFocus: 93466 - libgit2 CVE-2016-8568 Out-of-Bounds Read Denial of Service Vulnerability
OSVDB: - CVE-2016-8568 - libgit2 - Out-of-Bounds Read Issue

See also: 🔍

Entryinfo

Created: 02/03/2017 19:50
Updated: 11/11/2022 14:59
Changes: 02/03/2017 19:50 (74), 08/11/2020 07:03 (8), 11/11/2022 14:58 (5), 11/11/2022 14:59 (1)
Complete: 🔍

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