CVE-2020-29448 Path traversal in Confluence Data Center

Medium 5.3 Published Updated

Unauthenticated attackers can read arbitrary files in WEB-INF and META-INF directories due to incorrect path access checks in Confluence.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
Not needed
Fix
None listed

What is CVE-2020-29448?

CVE-2020-29448 is a medium-severity path traversal vulnerability in Atlassian Confluence Data Center, published on 18 Feb 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

The ConfluenceResourceDownloadRewriteRule class in Confluence Server and Confluence Data Center before version 6.13.18, from 6.14.0 before 7.4.6, and from 7.5.0 before 7.8.3 allowed unauthenticated remote attackers to read arbitrary files within WEB-INF and META-INF directories via an incorrect path access check.

Which versions are affected by CVE-2020-29448?

It affects 2 products.

Products include Atlassian Confluence Data Center, Atlassian Confluence Server.

How do I fix CVE-2020-29448?

No fix has been published for CVE-2020-29448 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-2020-29448 being exploited?

There is no known exploitation of CVE-2020-29448 in the wild and no public exploit code.

Sources

Also known as GHSA-98cv-g579-8fm6.

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