Git up to 2.14.2 Tree Object resource consumption

CVSS Meta Temp Score
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CTI Interest Score
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5.3$0-$5k0.00

Summaryinfo

A vulnerability was found in Git up to 2.14.2. It has been classified as problematic. The affected element is an unknown function of the component Tree Object Handler. The manipulation leads to resource consumption. This vulnerability is documented as CVE-2017-15298. The attack can be initiated remotely. There is not any exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in Git up to 2.14.2 (Versioning Software) and classified as problematic. This issue affects an unknown code block of the component Tree Object Handler. The manipulation with an unknown input leads to a resource consumption vulnerability. Using CWE to declare the problem leads to CWE-400. The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources. Impacted is availability. The summary by CVE is:

Git through 2.14.2 mishandles layers of tree objects, which allows remote attackers to cause a denial of service (memory consumption) via a crafted repository, aka a Git bomb. This can also have an impact of disk consumption; however, an affected process typically would not survive its attempt to build the data structure in memory before writing to disk.

The bug was discovered 10/12/2017. The weakness was released 10/14/2017 (Website). The advisory is shared at github.com. The identification of this vulnerability is CVE-2017-15298 since 10/14/2017. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1499 for this issue.

The vulnerability was handled as a non-public zero-day exploit for at least 2 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 104827 (Fedora 26 : git (2017-742be0e59c)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Fedora Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 197313 (Ubuntu Security Notification for Git Vulnerabilities (USN-3829-1)).

Upgrading eliminates this vulnerability. A possible mitigation has been published 2 months after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (104827) and SecurityFocus (BID 106020†). Entry connected to this vulnerability is available at VDB-127082. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

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

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

NVD Base Score: 🔍

Exploitinginfo

Class: Resource consumption
CWE: CWE-400 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 104827
Nessus Name: Fedora 26 : git (2017-742be0e59c)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 870064
OpenVAS Name: Fedora Update for git FEDORA-2017-cdfd888e2e
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: 🔍

Timelineinfo

10/12/2017 🔍
10/14/2017 +2 days 🔍
10/14/2017 +0 days 🔍
10/14/2017 +0 days 🔍
10/15/2017 +1 days 🔍
11/28/2017 +44 days 🔍
11/29/2017 +1 days 🔍
11/23/2018 +359 days 🔍
01/03/2023 +1502 days 🔍

Sourcesinfo

Advisory: FEDORA-2017-742be0e59c
Researcher: Jeff King
Status: Confirmed

CVE: CVE-2017-15298 (🔍)
GCVE (CVE): GCVE-0-2017-15298
GCVE (VulDB): GCVE-100-107861
SecurityFocus: 106020 - Git CVE-2018-19486 Remote Command Injection Vulnerability

See also: 🔍

Entryinfo

Created: 10/15/2017 12:03
Updated: 01/03/2023 14:57
Changes: 10/15/2017 12:03 (74), 11/24/2019 16:59 (5), 01/17/2021 07:33 (3), 01/03/2023 14:54 (3), 01/03/2023 14:57 (1)
Complete: 🔍
Cache ID: 216:15F:103

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