cve-2023-4759
Vulnerability from cvelistv5
Published
2023-09-12 09:12
Modified
2024-08-02 07:37
Severity ?
8.8 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS score ?
1.43% (0.78935)
Summary
Arbitrary File Overwrite in Eclipse JGit <= 6.6.0 In Eclipse JGit, all versions <= 6.6.0.202305301015-r, a symbolic link present in a specially crafted git repository can be used to write a file to locations outside the working tree when this repository is cloned with JGit to a case-insensitive filesystem, or when a checkout from a clone of such a repository is performed on a case-insensitive filesystem. This can happen on checkout (DirCacheCheckout), merge (ResolveMerger via its WorkingTreeUpdater), pull (PullCommand using merge), and when applying a patch (PatchApplier). This can be exploited for remote code execution (RCE), for instance if the file written outside the working tree is a git filter that gets executed on a subsequent git command. The issue occurs only on case-insensitive filesystems, like the default filesystems on Windows and macOS. The user performing the clone or checkout must have the rights to create symbolic links for the problem to occur, and symbolic links must be enabled in the git configuration. Setting git configuration option core.symlinks = false before checking out avoids the problem. The issue was fixed in Eclipse JGit version 6.6.1.202309021850-r and 6.7.0.202309050840-r, available via Maven Central https://repo1.maven.org/maven2/org/eclipse/jgit/  and repo.eclipse.org https://repo.eclipse.org/content/repositories/jgit-releases/ . A backport is available in 5.13.3 starting from 5.13.3.202401111512-r. The JGit maintainers would like to thank RyotaK for finding and reporting this issue.
References
emo@eclipse.orghttps://git.eclipse.org/c/jgit/jgit.git/commit/?id=9072103f3b3cf64dd12ad2949836ab98f62dabf1Patch, Vendor Advisory
emo@eclipse.orghttps://gitlab.eclipse.org/security/vulnerability-reports/-/issues/11Issue Tracking, Vendor Advisory
emo@eclipse.orghttps://projects.eclipse.org/projects/technology.jgit/releases/6.6.1Release Notes, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://git.eclipse.org/c/jgit/jgit.git/commit/?id=9072103f3b3cf64dd12ad2949836ab98f62dabf1Patch, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://gitlab.eclipse.org/security/vulnerability-reports/-/issues/11Issue Tracking, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://projects.eclipse.org/projects/technology.jgit/releases/6.6.1Release Notes, Vendor Advisory
Impacted products
Vendor Product Version
Eclipse Foundation Eclipse JGit Version: 0.0.0   ≤ 6.6.0.202305301015-r
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A backport is available in 5.13.3 starting from  5.13.3.202401111512-r.<br></p><p>The JGit maintainers would like to thank RyotaK for finding and reporting this issue.<br></p><br>\"}], \"value\": \"Arbitrary File Overwrite in Eclipse JGit <= 6.6.0\\n\\nIn Eclipse JGit, all versions <= 6.6.0.202305301015-r, a symbolic link present in a specially crafted git repository can be used to write a file to locations outside the working tree when this repository is cloned with JGit to a case-insensitive filesystem, or when a checkout from a clone of such a repository is performed on a case-insensitive filesystem.\\n\\nThis can happen on checkout (DirCacheCheckout), merge (ResolveMerger\\u00a0via its WorkingTreeUpdater), pull (PullCommand\\u00a0using merge), and when applying a patch (PatchApplier). This can be exploited for remote code execution (RCE), for instance if the file written outside the working tree is a git filter that gets executed on a subsequent git command.\\n\\nThe issue occurs only on case-insensitive filesystems, like the default filesystems on Windows and macOS. The user performing the clone or checkout must have the rights to create symbolic links for the problem to occur, and symbolic links must be enabled in the git configuration.\\n\\nSetting git configuration option core.symlinks = false\\u00a0before checking out avoids the problem.\\n\\nThe issue was fixed in Eclipse JGit version 6.6.1.202309021850-r and 6.7.0.202309050840-r, available via  Maven Central https://repo1.maven.org/maven2/org/eclipse/jgit/ \\u00a0and  repo.eclipse.org https://repo.eclipse.org/content/repositories/jgit-releases/ . A backport is available in 5.13.3 starting from  5.13.3.202401111512-r.\\n\\n\\nThe JGit maintainers would like to thank RyotaK for finding and reporting this issue.\\n\\n\\n\\n\"}], \"impacts\": [{\"capecId\": \"CAPEC-132\", \"descriptions\": [{\"lang\": \"en\", \"value\": \"CAPEC-132 Symlink Attack\"}]}], \"metrics\": [{\"cvssV3_1\": {\"attackComplexity\": \"LOW\", \"attackVector\": \"NETWORK\", \"availabilityImpact\": \"HIGH\", \"baseScore\": 8.8, \"baseSeverity\": \"HIGH\", \"confidentialityImpact\": \"HIGH\", \"integrityImpact\": \"HIGH\", \"privilegesRequired\": \"NONE\", \"scope\": \"UNCHANGED\", \"userInteraction\": \"REQUIRED\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H\", \"version\": \"3.1\"}, \"format\": \"CVSS\", \"scenarios\": [{\"lang\": \"en\", \"value\": \"GENERAL\"}]}], \"problemTypes\": [{\"descriptions\": [{\"cweId\": \"CWE-59\", \"description\": \"CWE-59 Improper Link Resolution Before File Access ('Link Following')\", \"lang\": \"en\", \"type\": \"CWE\"}]}, {\"descriptions\": [{\"cweId\": \"CWE-178\", \"description\": \"CWE-178 Improper Handling of Case Sensitivity\", \"lang\": \"en\", \"type\": \"CWE\"}]}], \"providerMetadata\": {\"orgId\": \"e51fbebd-6053-4e49-959f-1b94eeb69a2c\", \"shortName\": \"eclipse\", \"dateUpdated\": \"2024-01-12T15:21:24.101Z\"}, \"references\": [{\"url\": \"https://gitlab.eclipse.org/security/vulnerability-reports/-/issues/11\"}, {\"url\": \"https://projects.eclipse.org/projects/technology.jgit/releases/6.6.1\"}, {\"url\": \"https://git.eclipse.org/c/jgit/jgit.git/commit/?id=9072103f3b3cf64dd12ad2949836ab98f62dabf1\"}], \"source\": {\"discovery\": \"EXTERNAL\"}, \"title\": \"Improper handling of case insensitive filesystems in Eclipse JGit allows arbitrary file write\", \"workarounds\": [{\"lang\": \"en\", \"supportingMedia\": [{\"base64\": false, \"type\": \"text/html\", \"value\": \"<p>Setting git configuration option <code>core.symlinks = false</code>&nbsp;before checking out avoids the problem.</p>\"}], \"value\": \"Setting git configuration option core.symlinks = false\\u00a0before checking out avoids the problem.\\n\\n\"}], \"x_generator\": {\"engine\": \"Vulnogram 0.1.0-dev\"}}, \"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2023-4759\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"total\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-07-19T03:55:38.083883Z\"}}}], \"affected\": [{\"cpes\": [\"cpe:2.3:a:eclipse:jgit:*:*:*:*:*:*:*:*\"], \"vendor\": \"eclipse\", \"product\": \"jgit\", \"versions\": [{\"status\": \"affected\", \"version\": \"0\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.6.0.202305301015-r\"}], \"defaultStatus\": \"unaffected\"}, {\"cpes\": [\"cpe:2.3:a:eclipse:jgit:5.13.3.202401111512-r:*:*:*:*:*:*:*\"], \"vendor\": \"eclipse\", \"product\": \"jgit\", \"versions\": [{\"status\": \"unaffected\", \"version\": \"5.13.3.202401111512-r\"}], \"defaultStatus\": \"unaffected\"}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-07-19T13:50:05.173Z\"}}]}",
         cveMetadata: "{\"cveId\": \"CVE-2023-4759\", \"assignerOrgId\": \"e51fbebd-6053-4e49-959f-1b94eeb69a2c\", \"state\": \"PUBLISHED\", \"assignerShortName\": \"eclipse\", \"dateReserved\": \"2023-09-04T16:06:00.689Z\", \"datePublished\": \"2023-09-12T09:12:10.254Z\", \"dateUpdated\": \"2024-07-19T13:51:38.023Z\"}",
         dataType: "CVE_RECORD",
         dataVersion: "5.1",
      },
   },
}


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