CVE-2023-4759
Eclipse JGit Case-Insensitive File System Symbolic Link Overwrite Vulnerability
Description
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.
INFO
Published Date :
Sept. 12, 2023, 10:15 a.m.
Last Modified :
Aug. 7, 2024, 5:30 p.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
5.9
Exploitability Score :
2.8
Public PoC/Exploit Available at Github
CVE-2023-4759 has a 2 public PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2023-4759.
| URL | Resource |
|---|---|
| https://git.eclipse.org/c/jgit/jgit.git/commit/?id=9072103f3b3cf64dd12ad2949836ab98f62dabf1 | Patch Vendor Advisory |
| https://gitlab.eclipse.org/security/vulnerability-reports/-/issues/11 | Issue Tracking Vendor Advisory |
| https://projects.eclipse.org/projects/technology.jgit/releases/6.6.1 | Release Notes Vendor Advisory |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
None
Java
Identifies and prioritizes God Classes and Highly Coupled classes in Java codebases you should refactor first.
maven-plugin maven java report static-analysis refactoring refactoring-tools
Java
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2023-4759 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2023-4759 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Reanalysis by [email protected]
Aug. 07, 2024
Action Type Old Value New Value Changed CPE Configuration OR *cpe:2.3:a:eclipse:jgit:*:*:*:*:*:*:*:* versions up to (excluding) 5.13.3.202401111512-r *cpe:2.3:a:eclipse:jgit:*:*:*:*:*:*:*:* versions from (including) 6.6.0 up to (excluding) 6.6.0.202305301015 *cpe:2.3:a:eclipse:jgit:*:*:*:*:*:*:*:* versions from (including) 6.7.0 up to (excluding) 6.7.0.202309050840 AND OR *cpe:2.3:a:eclipse:jgit:*:*:*:*:*:*:*:* versions up to (excluding) 5.13.3.202401111512-r *cpe:2.3:a:eclipse:jgit:*:*:*:*:*:*:*:* versions from (including) 6.6.0 up to (excluding) 6.6.0.202305301015 *cpe:2.3:a:eclipse:jgit:*:*:*:*:*:*:*:* versions from (including) 6.7.0 up to (excluding) 6.7.0.202309050840 OR cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:* cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:* -
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
Modified Analysis by [email protected]
Apr. 26, 2024
Action Type Old Value New Value Changed CPE Configuration OR *cpe:2.3:a:eclipse:jgit:*:*:*:*:*:*:*:* versions up to (excluding) 6.6.0.202305301015 *cpe:2.3:a:eclipse:jgit:*:*:*:*:*:*:*:* versions from (including) 6.7.0 up to (excluding) 6.7.0.202309050840 OR *cpe:2.3:a:eclipse:jgit:*:*:*:*:*:*:*:* versions up to (excluding) 5.13.3.202401111512-r *cpe:2.3:a:eclipse:jgit:*:*:*:*:*:*:*:* versions from (including) 6.6.0 up to (excluding) 6.6.0.202305301015 *cpe:2.3:a:eclipse:jgit:*:*:*:*:*:*:*:* versions from (including) 6.7.0 up to (excluding) 6.7.0.202309050840 -
CVE Modified by [email protected]
Jan. 12, 2024
Action Type Old Value New Value Changed Description 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/ . The JGit maintainers would like to thank RyotaK for finding and reporting this issue. 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. -
Reanalysis by [email protected]
Nov. 15, 2023
Action Type Old Value New Value Changed CPE Configuration OR *cpe:2.3:a:eclipse:jgit:*:*:*:*:*:*:*:* versions from (including) 6.6.0 up to (excluding) 6.6.1.202309021850 *cpe:2.3:a:eclipse:jgit:*:*:*:*:*:*:*:* versions from (including) 6.7.0 up to (excluding) 6.7.0.202309050840 OR *cpe:2.3:a:eclipse:jgit:*:*:*:*:*:*:*:* versions up to (excluding) 6.6.0.202305301015 *cpe:2.3:a:eclipse:jgit:*:*:*:*:*:*:*:* versions from (including) 6.7.0 up to (excluding) 6.7.0.202309050840 -
Initial Analysis by [email protected]
Sep. 18, 2023
Action Type Old Value New Value Added CVSS V3.1 NIST AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Changed Reference Type https://git.eclipse.org/c/jgit/jgit.git/commit/?id=9072103f3b3cf64dd12ad2949836ab98f62dabf1 No Types Assigned https://git.eclipse.org/c/jgit/jgit.git/commit/?id=9072103f3b3cf64dd12ad2949836ab98f62dabf1 Patch, Vendor Advisory Changed Reference Type https://gitlab.eclipse.org/security/vulnerability-reports/-/issues/11 No Types Assigned https://gitlab.eclipse.org/security/vulnerability-reports/-/issues/11 Issue Tracking, Vendor Advisory Changed Reference Type https://projects.eclipse.org/projects/technology.jgit/releases/6.6.1 No Types Assigned https://projects.eclipse.org/projects/technology.jgit/releases/6.6.1 Release Notes, Vendor Advisory Added CWE NIST CWE-59 Added CWE NIST CWE-178 Added CPE Configuration OR *cpe:2.3:a:eclipse:jgit:*:*:*:*:*:*:*:* versions from (including) 6.6.0 up to (excluding) 6.6.1.202309021850 *cpe:2.3:a:eclipse:jgit:*:*:*:*:*:*:*:* versions from (including) 6.7.0 up to (excluding) 6.7.0.202309050840
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2023-4759 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2023-4759
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.20 }} 0.07%
score
0.58021
percentile