Path traversal in Atlassian Jira

1) Path traversal

EUVDB-ID: #VU57375

Risk: Medium

CVSSv4.0: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:A/U:Green]

CVE-ID: CVE-2021-26086

CWE-ID: CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Exploit availability: Yes

Description

The vulnerability allows a remote attacker to perform directory traversal attacks.

The vulnerability exists due to input validation error when processing directory traversal sequences in the /WEB-INF/web.xml endpoint. A remote attacker can send a specially crafted HTTP request and read arbitrary files on the system.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Jira Software: 8.0.0-m0025 - 8.16.0

CPE2.3

• cpe:2.3:a:atlassian:jira:8.0.4:*:*:*:*:*:*:*
• cpe:2.3:a:atlassian:jira:8.16.0:*:*:*:*:*:*:*
• cpe:2.3:a:atlassian:jira:8.2.6:*:*:*:*:*:*:*
• cpe:2.3:a:atlassian:jira:8.3.5:*:*:*:*:*:*:*
• cpe:2.3:a:atlassian:jira:8.4.3:*:*:*:*:*:*:*
• cpe:2.3:a:atlassian:jira:8.5.13:*:*:*:*:*:*:*
• cpe:2.3:a:atlassian:jira:8.6.1:*:*:*:*:*:*:*
• cpe:2.3:a:atlassian:jira:8.7.1:*:*:*:*:*:*:*
• cpe:2.3:a:atlassian:jira:8.8.1:*:*:*:*:*:*:*
• cpe:2.3:a:atlassian:jira:8.9.1:*:*:*:*:*:*:*

External links

https://jira.atlassian.com/browse/JRASERVER-72695
https://packetstormsecurity.com/files/164405/Atlassian-Jira-Server-Data-Center-8.4.0-File-Read.html

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?

Yes. This vulnerability is being exploited in the wild.