Insecure link following in Eclipse JGit

1) Link following

EUVDB-ID: #VU81948

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-4759

CWE-ID: CWE-59 - Improper Link Resolution Before File Access ('Link Following')

Exploit availability: No

Description

The vulnerability allows a remote attacker to overwrite files on the system.

The vulnerability exists due to an insecure link following. A remote attacker can place a specially crafted symbolic link into the repository, trick the victim into cloning it and overwrite arbitrary files on the system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

JGit: 6.6.0.202305031100-m2 - 6.6.0.202305301015-r

External links

http://projects.eclipse.org/projects/technology.jgit/releases/6.6.1
http://git.eclipse.org/c/jgit/jgit.git/commit/?id=9072103f3b3cf64dd12ad2949836ab98f62dabf1
http://gitlab.eclipse.org/security/vulnerability-reports/-/issues/11

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.