According to the versions of the git packages installed, the EulerOS Virtualization 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 an open source, scalable, distributed revision control system. Versions prior to 2.30.6, 2.31.5,     2.32.4, 2.33.5, 2.34.5, 2.35.5, 2.36.3, and 2.37.4 are subject to exposure of sensitive information to a     malicious actor. When performing a local clone (where the source and target of the clone are on the same     volume), Git copies the contents of the source's `$GIT_DIR/objects` directory into the destination by     either creating hardlinks to the source contents, or copying them (if hardlinks are disabled via `--no-     hardlinks`). A malicious actor could convince a victim to clone a repository with a symbolic link pointing     at sensitive information on the victim's machine. This can be done either by having the victim clone a     malicious repository on the same machine, or having them clone a malicious repository embedded as a bare     repository via a submodule from any source, provided they clone with the `--recurse-submodules` option.
    Git does not create symbolic links in the `$GIT_DIR/objects` directory. The problem has been patched in     the versions published on 2022-10-18, and backported to v2.30.x. Potential workarounds: Avoid cloning     untrusted repositories using the `--local` optimization when on a shared machine, either by passing the     `--no-local` option to `git clone` or cloning from a URL that uses the `file://` scheme. Alternatively,     avoid cloning repositories from untrusted sources with `--recurse-submodules` or run `git config --global     protocol.file.allow user`. (CVE-2022-39253)

  - Git is an open source, scalable, distributed revision control system. `git shell` is a restricted login     shell that can be used to implement Git's push/pull functionality via SSH. In versions prior to 2.30.6,     2.31.5, 2.32.4, 2.33.5, 2.34.5, 2.35.5, 2.36.3, and 2.37.4, the function that splits the command arguments     into an array improperly uses an `int` to represent the number of entries in the array, allowing a     malicious actor to intentionally overflow the return value, leading to arbitrary heap writes. Because the     resulting array is then passed to `execv()`, it is possible to leverage this attack to gain remote code     execution on a victim machine. Note that a victim must first allow access to `git shell` as a login shell     in order to be vulnerable to this attack. This problem is patched in versions 2.30.6, 2.31.5, 2.32.4,     2.33.5, 2.34.5, 2.35.5, 2.36.3, and 2.37.4 and users are advised to upgrade to the latest version.
    Disabling `git shell` access via remote logins is a viable short-term workaround. (CVE-2022-39260)

  - 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 is a revision control system. Using a specially-crafted repository, Git prior to versions 2.39.2,     2.38.4, 2.37.6, 2.36.5, 2.35.7, 2.34.7, 2.33.7, 2.32.6, 2.31.7, and 2.30.8 can be tricked into using its     local clone optimization even when using a non-local transport. Though Git will abort local clones whose     source `$GIT_DIR/objects` directory contains symbolic links, the `objects` directory itself may still be a     symbolic link. These two may be combined to include arbitrary files based on known paths on the victim's     filesystem within the malicious repository's working copy, allowing for data exfiltration in a similar     manner as CVE-2022-39253. A fix has been prepared and will appear in v2.39.2 v2.38.4 v2.37.6 v2.36.5     v2.35.7 v2.34.7 v2.33.7 v2.32.6, v2.31.7 and v2.30.8. If upgrading is impractical, two short-term     workarounds are available. Avoid cloning repositories from untrusted sources with `--recurse-submodules`.
    Instead, consider cloning repositories without recursively cloning their submodules, and instead run `git     submodule update` at each layer. Before doing so, inspect each new `.gitmodules` file to ensure that it     does not contain suspicious module URLs. (CVE-2023-22490)

  - Git, a revision control system, is vulnerable to path traversal prior to versions 2.39.2, 2.38.4, 2.37.6,     2.36.5, 2.35.7, 2.34.7, 2.33.7, 2.32.6, 2.31.7, and 2.30.8. By feeding a crafted input to `git apply`, a     path outside the working tree can be overwritten as the user who is running `git apply`. A fix has been     prepared and will appear in v2.39.2, v2.38.4, v2.37.6, v2.36.5, v2.35.7, v2.34.7, v2.33.7, v2.32.6,     v2.31.7, and v2.30.8. As a workaround, use `git apply --stat` to inspect a patch before applying; avoid     applying one that creates a symbolic link and then creates a file beyond the symbolic link.
    (CVE-2023-23946)

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.

Detections

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EulerOS Virtualization 3.0.6.6 : git (EulerOS-SA-2023-2424)

critical Nessus Plugin ID 178857

Version 1.1

Version 1.0

Version 1.1 Sep 11, 2023, 4:16 PM CVSS temporal metrics ("CVSSv2 temporal vector" set to "CVSS2#E:POC/RL:OF/RC:C". "CVSSv3 temporal vector" set to "CVSS:3.0/E:P/RL:O/RC:C") Exploit attributes ("Exploit available" set to "True". "Exploitability ease" changed from "No known exploits are available" to "Exploits are available") Plugin Feed: 202309111616
Version 1.0 Jul 26, 2023, 6:03 PM New Plugin Feed: 202307261803