CVE-2022-39260 (GCVE-0-2022-39260)

Vulnerability from cvelistv5 – Published: 2022-10-19 00:00 – Updated: 2024-08-03 12:00
VLAI
Title
Git vulnerable to Remote Code Execution via Heap overflow in `git shell`
Summary
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.
Severity
8.5 (High)
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
CWE
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 7820 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
git git Affected: < 2.30.6
Affected: > 2.31.0, < 2.31.5
Affected: > 2.32.0, < 2.32.4
Affected: > 2.33.0, < 2.33.5
Affected: > 2.34.0, < 2.34.5
Affected: > 2.34.0, < 2.35.5
Affected: > 2.35.0, < 2.36.3
Affected: > 2.37.0, < 2.37.4
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            "lang": "en",
            "value": "Git is an open source, scalable, distributed revision control system. `git shell` is a restricted login shell that can be used to implement Git\u0027s 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."
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            "lang": "es",
            "value": "Git es un sistema de control de revisiones distribuido, escalable y de c\u00f3digo abierto. \"git shell\" es un shell de acceso restringido que puede ser usado para implementar la funcionalidad push/pull de Git por medio de SSH. En versiones anteriores a 2.30.6, 2.31.5, 2.32.4, 2.33.5, 2.34.5, 2.35.5, 2.36.3 y 2.37.4, la funci\u00f3n que divide los argumentos del comando en un array usa incorrectamente un \"int\" para representar el n\u00famero de entradas en el array, permitiendo a un actor malicioso desbordar intencionadamente el valor de retorno, conllevando a escrituras arbitrarias en la pila. Dado que la matriz resultante es pasada a \"execv()\", es posible aprovechar este ataque para obtener la ejecuci\u00f3n de c\u00f3digo remota en una m\u00e1quina v\u00edctima. Tenga en cuenta que una v\u00edctima debe permitir primero el acceso a \"git shell\" como shell de inicio de sesi\u00f3n para ser vulnerable a este ataque. Este problema est\u00e1 parcheado en versiones 2.30.6, 2.31.5, 2.32.4, 2.33.5, 2.34.5, 2.35.5, 2.36.3 y 2.37.4 y es recomendado a usuarios actualizar a la \u00faltima versi\u00f3n. Deshabilitar el acceso al \"git shell\" por medio de inicios de sesi\u00f3n remotos es una mitigaci\u00f3n viable a corto plazo"
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        "id": "CVE-2022-39260",
        "lastModified": "2026-06-17T04:58:01.303",
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                "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H",
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    "redhat_vex": {
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      "current_release_date": "2026-11-05T10:08:44+00:00",
      "cve": "CVE-2022-39260",
      "id": "CVE-2022-39260",
      "initial_release_date": "2022-10-18T00:00:00+00:00",
      "product_status:fixed": "153",
      "product_status:known_affected": "50",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "git: git shell function that splits command arguments can lead to arbitrary heap writes.",
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      "version": "3"
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      "cve": "CVE-2022-39260",
      "id": "CVE-2022-39260",
      "initial_release_date": "2023-02-15T03:23:52Z",
      "product_status:known_affected": "88",
      "product_status:known_not_affected": "135",
      "product_status:recommended": "674",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2022-39260",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/2023/cve-2022-39260.json",
      "version": "34"
    }
  }
}



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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

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
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  • 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.
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  • 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.
Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

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How durations are calculated

Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.

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