CVE-2021-43957 Path traversal in Crucible

What is CVE-2021-43957?

CVE-2021-43957 is a high-severity path traversal vulnerability in Atlassian Crucible, published on 16 Mar 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Affected versions of Atlassian Fisheye & Crucible allowed remote attackers to browse local files via an Insecure Direct Object References (IDOR) vulnerability in the WEB-INF directory and bypass the fix for CVE-2020-29446 due to a lack of url decoding. The affected versions are before version 4.8.9.

Weakness: CWE-639

Which versions are affected by CVE-2021-43957?

It affects 2 products.

Products include Atlassian Crucible, Atlassian Fisheye.

How do I fix CVE-2021-43957?

No fix has been published for CVE-2021-43957 yet. Limit exposure of the affected software until one is available.

Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.

Is CVE-2021-43957 being exploited?

There is no known exploitation of CVE-2021-43957 in the wild and no public exploit code.

Other vulnerabilities in Atlassian Crucible

• CVE-2021-43958 Security feature bypass in Crucible Critical 9.8
• CVE-2017-16861 Code injection in Fisheye and Crucible Critical 9.8
• CVE-2017-14591 Command injection in Fisheye and Crucible Critical 9.0
• CVE-2020-4018 Cross-site request forgery in Crucible High 8.8
• CVE-2018-13399 Privilege escalation in Fisheye and Crucible High 7.8

All Atlassian Crucible vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-wg3j-ppp5-jg9q.