Git GUI is a convenient graphical tool that comes with Git for Windows. Its target audience is users who are uncomfortable with using Git on the command-line. Git GUI has a function to clone repositories. Immediately after the local clone is available, Git GUI will automatically post-process it, among other things running a spell checker called `aspell.exe` if it was found. Git GUI is implemented as a Tcl/Tk script. Due to the unfortunate design of Tcl on Windows, the search path when looking for an executable _always includes the current directory_. Therefore, malicious repositories can ship with an `aspell.exe` in their top-level directory which is executed by Git GUI without giving the user a chance to inspect it first, i.e. running untrusted code. This issue has been addressed in version 2.39.1. Users are advised to upgrade. Users unable to upgrade should avoid using Git GUI for cloning. If that is not a viable option, at least avoid cloning from untrusted sources.

According to the versions of the git packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

  - Git is distributed revision control system. gitattributes are a mechanism to allow defining attributes for     paths. These attributes can be defined by adding a `.gitattributes` file to the repository, which contains     a set of file patterns and the attributes that should be set for paths matching this pattern. When parsing     gitattributes, multiple integer overflows can occur when there is a huge number of path patterns, a huge     number of attributes for a single pattern, or when the declared attribute names are huge. These overflows     can be triggered via a crafted `.gitattributes` file that may be part of the commit history. Git silently     splits lines longer than 2KB when parsing gitattributes from a file, but not when parsing them from the     index. Consequentially, the failure mode depends on whether the file exists in the working tree, the index     or both. This integer overflow can result in arbitrary heap reads and writes, which may result in remote     code execution. The problem has been patched in the versions published on 2023-01-17, going back to     v2.30.7. Users are advised to upgrade. There are no known workarounds for this issue. (CVE-2022-23521)

  - Git is distributed revision control system. `git log` can display commits in an arbitrary format using its     `--format` specifiers. This functionality is also exposed to `git archive` via the `export-subst`     gitattribute. When processing the padding operators, there is a integer overflow in     `pretty.c::format_and_pad_commit()` where a `size_t` is stored improperly as an `int`, and then added as     an offset to a `memcpy()`. This overflow can be triggered directly by a user running a command which     invokes the commit formatting machinery (e.g., `git log --format=...`). It may also be triggered     indirectly through git archive via the export-subst mechanism, which expands format specifiers inside of     files within the repository during a git archive. This integer overflow can result in arbitrary heap     writes, which may result in arbitrary code execution. The problem has been patched in the versions     published on 2023-01-17, going back to v2.30.7. Users are advised to upgrade. Users who are unable to     upgrade should disable `git archive` in untrusted repositories. If you expose git archive via `git     daemon`, disable it by running `git config --global daemon.uploadArch false`. (CVE-2022-41903)

  - Git GUI is a convenient graphical tool that comes with Git for Windows. Its target audience is users who     are uncomfortable with using Git on the command-line. Git GUI has a function to clone repositories.
    Immediately after the local clone is available, Git GUI will automatically post-process it, among other     things running a spell checker called `aspell.exe` if it was found. Git GUI is implemented as a Tcl/Tk     script. Due to the unfortunate design of Tcl on Windows, the search path when looking for an executable
    _always includes the current directory_. Therefore, malicious repositories can ship with an `aspell.exe`     in their top-level directory which is executed by Git GUI without giving the user a chance to inspect it     first, i.e. running untrusted code. This issue has been addressed in version 2.39.1. Users are advised to     upgrade. Users unable to upgrade should avoid using Git GUI for cloning. If that is not a viable option,     at least avoid cloning from untrusted sources. (CVE-2022-41953)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

ID	Name	Product	Family	Severity
175273	EulerOS 2.0 SP11 : git (EulerOS-SA-2023-1757)	Nessus	Huawei Local Security Checks	critical
175269	EulerOS 2.0 SP11 : git (EulerOS-SA-2023-1779)	Nessus	Huawei Local Security Checks	critical
172720	EulerOS 2.0 SP10 : git (EulerOS-SA-2023-1523)	Nessus	Huawei Local Security Checks	critical
172683	EulerOS 2.0 SP10 : git (EulerOS-SA-2023-1548)	Nessus	Huawei Local Security Checks	critical
172332	EulerOS 2.0 SP9 : git (EulerOS-SA-2023-1441)	Nessus	Huawei Local Security Checks	critical
172320	EulerOS 2.0 SP9 : git (EulerOS-SA-2023-1466)	Nessus	Huawei Local Security Checks	critical

Detections

Analytics

CVE-2022-41953

high

Tenable Plugins

critical

critical

critical

critical

critical

critical