SB2023021528 - Multiple vulnerabilities in Git for Windows

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Main Vulnerability Database SB2023021528

SB2023021528 - Multiple vulnerabilities in Git for Windows

Published: February 15, 2023

Security Bulletin ID SB2023021528
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 4
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

Medium 50% Low 50%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 4 vulnerabilities.


1) Untrusted search path (CVE-ID: CVE-2023-22743)

CWE-ID: CWE-426 - Untrusted Search Path

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green


The vulnerability allows a remote attacker co compromise the affected system.

The vulnerability exists due to insecure loading of .dll libraries in Git for Windows installer. A remote attacker can place a malicious DLL file into a subdirectory of a specific name next to the Git for Windows installer (e.g. into a download folder) and execute it on the system by tricking the victim to launch the Git for Windows installer from that directory.


2) Untrusted search path (CVE-ID: CVE-2023-23618)

CWE-ID: CWE-426 - Untrusted Search Path

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear


The vulnerability allows a remote attacker to compromise the affected system.

The vulnerability exists due to "gitk" on Windows executes binaries from the current working directory. A remote attacker can trick the victim into placing a malicious binary into the working directory using social engineering and trick users into running untrusted code.


3) Link following (CVE-ID: CVE-2023-22490)

CWE-ID: CWE-59 - Improper Link Resolution Before File Access ('Link Following')

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear


The vulnerability allows a remote attacker to gain access to sensitive information.

The vulnerability exists due to insecure processing of symbolic links when using local clone optimization. Git will abort local clones whose source `$GIT_DIR/objects` directory contains symbolic links, however the `objects` directory itself may still be a symbolic link. A remote attacker can trick the victim into using the local clone optimization to exfiltrate arbitrary files from the victim's system.


4) Link following (CVE-ID: CVE-2023-23946)

CWE-ID: CWE-59 - Improper Link Resolution Before File Access ('Link Following')

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Green


The vulnerability allows an attacker to compromise the affected system.

The vulnerability exists due to application allows to overwrite files outside the working tree via the "git apply" command. A remote attacker can trick the victim to run the affected command against a malicious or compromised repository and overwrite arbitrary files on the system.


Remediation

Install update from vendor's website.

References