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Medium

Git vulnerable to local clone-based data exfiltration with non-local transports

Type: advisorySource: Official CVE List1 source record

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.

Announced Source revision 1
Original source ↗

CVE-2023-22490

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: cve:CVE-2023-22490

git

Source reference: /containers/cna/affected/0/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "vendor": "git",
    "product": "git",
    "versions": [
      {
        "status": "affected",
        "version": ">= 2.39.0, < 2.39.2"
      },
      {
        "status": "affected",
        "version": ">= 2.38.0, < 2.38.4"
      },
      {
        "status": "affected",
        "version": ">= 2.37.0, < 2.37.6"
      },
      {
        "status": "affected",
        "version": ">= 2.36.0, < 2.36.5"
      },
      {
        "status": "affected",
        "version": ">= 2.35.0, < 2.35.7"
      },
      {
        "status": "affected",
        "version": ">= 2.34.0, < 2.34.7"
      },
      {
        "status": "affected",
        "version": ">= 2.33.0, < 2.33.7"
      },
      {
        "status": "affected",
        "version": ">= 2.32.0, < 2.32.6"
      },
      {
        "status": "affected",
        "version": ">= 2.31.0, < 2.31.7"
      },
      {
        "status": "affected",
        "version": "< 2.30.8"
      }
    ]
  }
]
Related CVEs
CVE-2023-22490

Source reference: /cveMetadata/cveId

Publisher severity

medium

Source reference: /containers/cna/metrics

Event
#16084 · Revision 1
Added to Heist Feed
Publisher date
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