CVE-2023-22490 (GCVE-0-2023-22490)

Vulnerability from cvelistv5 – Published: 2023-02-14 19:47 – Updated: 2025-02-13 16:43
VLAI
Title
Git vulnerable to local clone-based data exfiltration with non-local transports
Summary
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.
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
CWE
  • CWE-59 - Improper Link Resolution Before File Access ('Link Following')
Assigner
References
Impacted products
Vendor Product Version
git git Affected: >= 2.39.0, < 2.39.2
Affected: >= 2.38.0, < 2.38.4
Affected: >= 2.37.0, < 2.37.6
Affected: >= 2.36.0, < 2.36.5
Affected: >= 2.35.0, < 2.35.7
Affected: >= 2.34.0, < 2.34.7
Affected: >= 2.33.0, < 2.33.7
Affected: >= 2.32.0, < 2.32.6
Affected: >= 2.31.0, < 2.31.7
Affected: < 2.30.8
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    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-07-03T01:41:49+00:00",
      "cve": "CVE-2023-22490",
      "id": "CVE-2023-22490",
      "initial_release_date": "2023-02-14T00:00:00+00:00",
      "product_status:fixed": "153",
      "product_status:known_affected": "33",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "git: data exfiltration with maliciously crafted repository",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2023/cve-2023-22490.json",
      "version": "3"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.