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.
History

Wed, 07 Aug 2024 18:00:00 +0000

Type Values Removed Values Added
First Time appeared Apple
Apple macos
Microsoft
Microsoft windows
CPEs cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*
Vendors & Products Apple
Apple macos
Microsoft
Microsoft windows

cve-icon MITRE

Status: PUBLISHED

Assigner: eclipse

Published: 2023-09-12T09:12:10.254Z

Updated: 2024-08-02T07:37:59.574Z

Reserved: 2023-09-04T16:06:00.689Z

Link: CVE-2023-4759

cve-icon Vulnrichment

Updated: 2024-07-19T13:50:05.173Z

cve-icon NVD

Status : Analyzed

Published: 2023-09-12T10:15:29.977

Modified: 2024-08-07T17:30:50.313

Link: CVE-2023-4759

cve-icon Redhat

Severity : Moderate

Publid Date: 2023-09-12T00:00:00Z

Links: CVE-2023-4759 - Bugzilla