CVE-2022-41903 (GCVE-0-2022-41903)

Vulnerability from cvelistv5 – Published: 2023-01-17 22:17 – Updated: 2025-03-10 21:21
VLAI
Title
Integer overflow in `git archive`, `git log --format` leading to RCE in git
Summary
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`.
Severity
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: yes Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-190 - Integer Overflow or Wraparound
Assigner
References
Impacted products
Vendor Product Version
git git Affected: < 2.30.7
Affected: >= 2.31.0, < 2.31.6
Affected: >= 2.32.0, < 2.32.5
Affected: >= 2.33.0, < 2.33.6
Affected: >= 2.34.0, < 2.34.6
Affected: >= 2.35.0, < 2.35.6
Affected: >= 2.36.0, < 2.36.4
Affected: >= 2.37.0, < 2.37.5
Affected: >= 2.38.0, < 2.38.3
Affected: = 2.39.0
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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`.\"},{\"lang\":\"es\",\"value\":\"Git es un sistema de control de revisiones distribuido. `git log` puede mostrar confirmaciones en un formato arbitrario usando sus especificadores `--format`. Esta funcionalidad tambi\u00e9n est\u00e1 expuesta a \\\"git archive\\\" a trav\u00e9s del atributo git \\\"export-subst\\\". Al procesar los operadores de relleno, hay un desbordamiento de enteros en `pretty.c::format_and_pad_commit()` donde `size_t` se almacena incorrectamente como `int` y luego se agrega como un desplazamiento a `memcpy()`. Este desbordamiento puede ser desencadenado directamente por un usuario que ejecuta un comando que invoca la maquinaria de formato de commit (por ejemplo, `git log --format=...`). Tambi\u00e9n se puede activar indirectamente a trav\u00e9s del archivo git mediante el mecanismo export-subst, que expande los especificadores de formato dentro de los archivos dentro del repositorio durante un archivo git. Este desbordamiento de enteros puede dar lugar a escrituras arbitrarias en el almacenamiento din\u00e1mico, lo que puede dar lugar a la ejecuci\u00f3n de c\u00f3digo arbitrario. El problema ha sido solucionado en las versiones publicadas el 17-01-2023, remont\u00e1ndose a la v2.30.7. Se recomienda a los usuarios que actualicen. Los usuarios que no puedan actualizar deben desactivar \\\"git archive\\\" en repositorios que no sean de confianza. Si expone el archivo git a trav\u00e9s de `git daemon`, desact\u00edvelo ejecutando `git config --global daemon.uploadArch 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    "vulnrichment": {
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      "cveMetadata": "{\"cveId\": \"CVE-2022-41903\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-03-10T21:21:50.039Z\", \"dateReserved\": \"2022-09-30T16:38:28.931Z\", \"assignerOrgId\": \"a0819718-46f1-4df5-94e2-005712e83aaa\", \"datePublished\": \"2023-01-17T22:17:16.123Z\", \"assignerShortName\": \"GitHub_M\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}


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Tags
Taxonomy of the tags.





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.