Git up to 2.17.0 gitmodules File 7pk security

CVSS Meta Temp Score
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CTI Interest Score
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7.2$0-$5k0.00

Summaryinfo

A vulnerability was found in Git up to 2.13.6/2.14.3/2.15.1/2.16.3/2.17.0. It has been classified as critical. Affected by this issue is some unknown functionality of the component gitmodules File Handler. The manipulation leads to 7pk security. This vulnerability is documented as CVE-2018-11235. The attack can be initiated remotely. Additionally, an exploit exists. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Git up to 2.13.6/2.14.3/2.15.1/2.16.3/2.17.0 (Versioning Software). This issue affects an unknown code block of the component gitmodules File Handler. The manipulation with an unknown input leads to a 7pk security vulnerability. Using CWE to declare the problem leads to CWE-254. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

In Git before 2.13.7, 2.14.x before 2.14.4, 2.15.x before 2.15.2, 2.16.x before 2.16.4, and 2.17.x before 2.17.1, remote code execution can occur. With a crafted .gitmodules file, a malicious project can execute an arbitrary script on a machine that runs "git clone --recurse-submodules" because submodule "names" are obtained from this file, and then appended to $GIT_DIR/modules, leading to directory traversal with "../" in a name. Finally, post-checkout hooks from a submodule are executed, bypassing the intended design in which hooks are not obtained from a remote server.

The bug was discovered 05/22/2018. The weakness was released 05/30/2018 (Website). The advisory is shared at debian.org. The identification of this vulnerability is CVE-2018-11235 since 05/18/2018. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details are unknown but a public exploit is available. MITRE ATT&CK project uses the attack technique T1211 for this issue.

The exploit is available at exploit-db.com. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 8 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 110308 (Slackware 13.0 / 13.1 / 13.37 / 14.0 / 14.1 / 14.2 / current : git (SSA:2018-152-01)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Slackware Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 171683 (SUSE Enterprise Linux Security Update for libgit2 (SUSE-SU-2018:3440-1)).

Upgrading to version 2.13.7, 2.14.4, 2.15.2, 2.16.4 or 2.17.1 eliminates this vulnerability. A possible mitigation has been published 2 days after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Exploit-DB (44822), Tenable (110308) and SecurityFocus (BID 104345†). seclists.org is providing further details. Entries connected to this vulnerability are available at VDB-114492, VDB-118360, VDB-121131 and VDB-121132. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 7.2

VulDB Base Score: 7.3
VulDB Temp Score: 6.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.8
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: 7pk security
CWE: CWE-254
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 110308
Nessus Name: Slackware 13.0 / 13.1 / 13.37 / 14.0 / 14.1 / 14.2 / current : git (SSA:2018-152-01)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 61879
OpenVAS Name: Debian Security Advisory DSA 4212-1 (git - security update)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Upgrade: Git 2.13.7/2.14.4/2.15.2/2.16.4/2.17.1

Timelineinfo

05/18/2018 🔍
05/22/2018 +4 days 🔍
05/30/2018 +7 days 🔍
05/30/2018 +0 days 🔍
05/30/2018 +0 days 🔍
06/01/2018 +2 days 🔍
06/04/2018 +3 days 🔍
03/17/2023 +1747 days 🔍

Sourcesinfo

Advisory: RHSA-2018:1957
Status: Confirmed

CVE: CVE-2018-11235 (🔍)
GCVE (CVE): GCVE-0-2018-11235
GCVE (VulDB): GCVE-100-118361

OVAL: 🔍

SecurityFocus: 104345
SecurityTracker: 1040991

scip Labs: https://www.scip.ch/en/?labs.20161013
Misc.: 🔍
See also: 🔍

Entryinfo

Created: 05/30/2018 16:57
Updated: 03/17/2023 16:31
Changes: 05/30/2018 16:57 (78), 02/21/2020 13:30 (5), 03/17/2023 16:31 (5)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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