Privilege escalation in JetBrains YouTrack

1) Incorrect default permissions

EUVDB-ID: #VU22490

Risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2019-18369

CWE-ID: CWE-276 - Incorrect Default Permissions

Exploit availability: No

Description

The vulnerability allows a remote attacker to escalate privileges on the system.

The vulnerability exists due to incorrect default permissions for files and folders that are set by the application. A remote attacker can remove tags from issues list without corresponding permission.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

YouTrack: All versions

CPE2.3

• cpe:2.3:a:jetbrains_s.r.o.:youtrack:*:*:*:*:*:*:*:*

External links

https://blog.jetbrains.com/blog/2019/10/29/jetbrains-security-bulletin-q3-2019/

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.