CVE-2022-39253 (GCVE-0-2022-39253)

Vulnerability from cvelistv5 – Published: 2022-10-19 00:00 – Updated: 2024-08-03 12:00
VLAI
Title
Git subject to exposure of sensitive information via local clone of symbolic links
Summary
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`.
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-200 - Exposure of Sensitive Information to an Unauthorized Actor
Assigner
References
Impacted products
Vendor Product Version
git git Affected: < 2.30.6
Affected: < 2.31.5
Affected: < 2.32.4
Affected: < 2.33.5
Affected: < 2.34.5
Affected: < 2.35.5
Affected: < 2.36.3
Affected: < 2.37.4
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      "id": "CVE-2022-39253",
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      "metrics": "{\"cvssMetricV31\": [{\"source\": \"security-advisories@github.com\", \"type\": \"Secondary\", \"cvssData\": {\"version\": \"3.1\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N\", \"baseScore\": 5.5, \"baseSeverity\": \"MEDIUM\", \"attackVector\": \"LOCAL\", \"attackComplexity\": \"LOW\", \"privilegesRequired\": \"NONE\", \"userInteraction\": \"REQUIRED\", \"scope\": \"UNCHANGED\", \"confidentialityImpact\": \"HIGH\", \"integrityImpact\": \"NONE\", \"availabilityImpact\": \"NONE\"}, \"exploitabilityScore\": 1.8, \"impactScore\": 3.6}, {\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"cvssData\": {\"version\": \"3.1\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N\", \"baseScore\": 5.5, \"baseSeverity\": \"MEDIUM\", \"attackVector\": \"LOCAL\", \"attackComplexity\": \"LOW\", \"privilegesRequired\": \"NONE\", \"userInteraction\": \"REQUIRED\", \"scope\": \"UNCHANGED\", \"confidentialityImpact\": \"HIGH\", \"integrityImpact\": \"NONE\", \"availabilityImpact\": \"NONE\"}, \"exploitabilityScore\": 1.8, \"impactScore\": 3.6}]}",
      "published": "2022-10-19T11:15:11.227",
      "references": "[{\"url\": \"http://seclists.org/fulldisclosure/2022/Nov/1\", \"source\": \"security-advisories@github.com\", \"tags\": [\"Mailing List\", \"Third Party Advisory\"]}, {\"url\": \"http://www.openwall.com/lists/oss-security/2023/02/14/5\", \"source\": \"security-advisories@github.com\", \"tags\": [\"Mailing List\", \"Third Party Advisory\"]}, {\"url\": \"http://www.openwall.com/lists/oss-security/2024/05/14/2\", \"source\": \"security-advisories@github.com\"}, {\"url\": \"https://github.com/git/git/security/advisories/GHSA-3wp6-j8xr-qw85\", \"source\": \"security-advisories@github.com\", \"tags\": [\"Mitigation\", \"Third Party Advisory\"]}, {\"url\": \"https://lists.debian.org/debian-lts-announce/2022/12/msg00025.html\", \"source\": \"security-advisories@github.com\", \"tags\": [\"Mailing List\", \"Third Party Advisory\"]}, {\"url\": \"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/C7B6JPKX5CGGLAHXJVQMIZNNEEB72FHD/\", \"source\": \"security-advisories@github.com\"}, {\"url\": \"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JMQWGMDLX6KTVWW5JZLVPI7ICAK72TN7/\", \"source\": \"security-advisories@github.com\"}, {\"url\": \"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OHNO2FB55CPX47BAXMBWUBGWHO6N6ZZH/\", \"source\": \"security-advisories@github.com\"}, {\"url\": \"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UKFHE4KVD7EKS5J3KTDFVBEKU3CLXGVV/\", \"source\": \"security-advisories@github.com\"}, {\"url\": \"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VFYXCTLOSESYIP72BUYD6ECDIMUM4WMB/\", \"source\": \"security-advisories@github.com\"}, {\"url\": \"https://security.gentoo.org/glsa/202312-15\", \"source\": \"security-advisories@github.com\"}, {\"url\": \"https://support.apple.com/kb/HT213496\", \"source\": \"security-advisories@github.com\", \"tags\": [\"Third Party Advisory\"]}, {\"url\": \"http://seclists.org/fulldisclosure/2022/Nov/1\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Mailing List\", \"Third Party Advisory\"]}, {\"url\": \"http://www.openwall.com/lists/oss-security/2023/02/14/5\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Mailing List\", \"Third Party Advisory\"]}, {\"url\": \"http://www.openwall.com/lists/oss-security/2024/05/14/2\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"https://github.com/git/git/security/advisories/GHSA-3wp6-j8xr-qw85\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Mitigation\", \"Third Party Advisory\"]}, {\"url\": \"https://lists.debian.org/debian-lts-announce/2022/12/msg00025.html\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Mailing List\", \"Third Party Advisory\"]}, {\"url\": \"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/C7B6JPKX5CGGLAHXJVQMIZNNEEB72FHD/\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JMQWGMDLX6KTVWW5JZLVPI7ICAK72TN7/\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OHNO2FB55CPX47BAXMBWUBGWHO6N6ZZH/\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UKFHE4KVD7EKS5J3KTDFVBEKU3CLXGVV/\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VFYXCTLOSESYIP72BUYD6ECDIMUM4WMB/\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"https://security.gentoo.org/glsa/202312-15\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"https://support.apple.com/kb/HT213496\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Third Party Advisory\"]}]",
      "sourceIdentifier": "security-advisories@github.com",
      "vulnStatus": "Modified",
      "weaknesses": "[{\"source\": \"security-advisories@github.com\", \"type\": \"Secondary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-200\"}]}, {\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-59\"}]}]"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2022-39253\",\"sourceIdentifier\":\"security-advisories@github.com\",\"published\":\"2022-10-19T11:15:11.227\",\"lastModified\":\"2024-11-21T07:17:53.040\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"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\u0027s `$GIT_DIR/objects` directory into the destination by either creating hardlinks to the source contents, or copying them (if hardlinks are disabled via `--no-hardlinks`). A malicious actor could convince a victim to clone a repository with a symbolic link pointing at sensitive information on the victim\u0027s machine. This can be done either by having the victim clone a malicious repository on the same machine, or having them clone a malicious repository embedded as a bare repository via a submodule from any source, provided they clone with the `--recurse-submodules` option. Git does not create symbolic links in the `$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`.\"},{\"lang\":\"es\",\"value\":\"Git es un sistema de control de revisiones distribuido, escalable y de c\u00f3digo abierto. Las versiones anteriores a la 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 est\u00e1n sujetas a una exposici\u00f3n de informaci\u00f3n confidencial a un actor malicioso. Cuando es llevado a cabo un clon local (en el que el origen y el destino del clon est\u00e1n en el mismo volumen), Git copia el contenido del directorio \\\"$GIT_DIR/objects\\\" del origen en el destino creando enlaces duros al contenido del origen o copi\u00e1ndolo (si los enlaces duros est\u00e1n deshabilitados por medio de \\\"--no-hardlinks\\\"). Un actor malicioso podr\u00eda convencer a una v\u00edctima de clonar un repositorio con un enlace simb\u00f3lico que apunte a informaci\u00f3n confidencial en la m\u00e1quina de la v\u00edctima. Esto puede hacerse ya sea que la v\u00edctima clone un repositorio malicioso en la misma m\u00e1quina, o haciendo que clone un repositorio malicioso insertado como repositorio desnudo por medio de un subm\u00f3dulo de cualquier fuente, siempre que clone con la opci\u00f3n \\\"--recurse-submodules\\\". Git no crea enlaces simb\u00f3licos en el directorio \\\"$GIT_DIR/objects\\\". El problema ha sido parcheado en las versiones publicadas el 18-10-2022, y retrocedido a v2.30.x. Posibles mitigaciones: Evite clonar repositorios no confiables usando la optimizaci\u00f3n \\\"--local\\\" cuando est\u00e9 en una m\u00e1quina compartida, ya sea pasando la opci\u00f3n \\\"--no-local\\\" a \\\"git clone\\\" o clonando desde una URL que use el esquema \\\"file://\\\". Alternativamente, evita clonar repositorios de fuentes no confiables con \\\"--recurse-submodules\\\" o ejecuta \\\"git config --global protocol.file.allow user\\\"\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"REQUIRED\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6},{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"REQUIRED\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6}]},\"weaknesses\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-200\"}]},{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-59\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:git-scm:git:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"2.30.6\",\"matchCriteriaId\":\"28199E8F-36D0-46F8-AF0A-9460390BE56F\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:git-scm:git:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"2.31.0\",\"versionEndExcluding\":\"2.31.5\",\"matchCriteriaId\":\"E095AAE7-18C2-4957-9740-FC804860B9C2\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:git-scm:git:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"2.32.0\",\"versionEndExcluding\":\"2.32.4\",\"matchCriteriaId\":\"459EE43E-40FB-45BE-A1CC-51435E9F92AD\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:git-scm:git:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"2.33.0\",\"versionEndExcluding\":\"2.33.5\",\"matchCriteriaId\":\"2CBDDA42-F5EC-4747-BF3C-16683D684702\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:git-scm:git:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"2.34.0\",\"versionEndExcluding\":\"2.34.5\",\"matchCriteriaId\":\"D7691E22-145E-4D97-A6E0-6515742781B9\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:git-scm:git:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"2.35.0\",\"versionEndExcluding\":\"2.35.5\",\"matchCriteriaId\":\"E02396C2-BB34-4D18-917E-DA56EA7B58B9\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:git-scm:git:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"2.36.0\",\"versionEndExcluding\":\"2.36.3\",\"matchCriteriaId\":\"51BEAEEC-9D9D-4CFE-8958-43BFE87DE501\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:git-scm:git:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"2.37.0\",\"versionEndExcluding\":\"2.37.4\",\"matchCriteriaId\":\"566CF89C-AC39-47D7-B3DE-633B2237F816\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:git-scm:git:2.38.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"1AFEECCB-B8DB-4270-A860-C2BA1C7B267C\"}]}]},{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"80E516C0-98A4-4ADE-B69F-66A772E2BAAA\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:fedoraproject:fedora:36:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"5C675112-476C-4D7C-BCB9-A2FB2D0BC9FD\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:fedoraproject:fedora:37:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"E30D0E6F-4AE8-4284-8716-991DFA48CC5D\"}]}]},{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:apple:xcode:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"14.1\",\"matchCriteriaId\":\"CECD39AA-41F4-4638-B59A-C5E928B585C3\"}]}]},{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"07B237A9-69A3-4A9C-9DA0-4E06BD37AE73\"}]}]}],\"references\":[{\"url\":\"http://seclists.org/fulldisclosure/2022/Nov/1\",\"source\":\"security-advisories@github.com\",\"tags\":[\"Mailing 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Party Advisory\"]}]}}"
  }
}


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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.