CVE-2018-20238 Auth bypass in Crowd

What is CVE-2018-20238?

CVE-2018-20238 is a high-severity authentication bypass vulnerability in Atlassian Crowd, published on 13 Feb 2019. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

Various rest resources in Atlassian Crowd before version 3.2.7 and from version 3.3.0 before version 3.3.4 allow remote attackers to authenticate using an expired user session via an insufficient session expiration vulnerability.

Weakness: CWE-384

Which versions are affected by CVE-2018-20238?

It affects 1 product.

Products include Atlassian Crowd.

How do I fix CVE-2018-20238?

No fix has been published for CVE-2018-20238 yet. Limit exposure of the affected software until one is available.

Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.

Is CVE-2018-20238 being exploited?

There is no known exploitation of CVE-2018-20238 in the wild and no public exploit code.

Other vulnerabilities in Atlassian Crowd

• CVE-2019-11580 Atlassian Crowd and Crowd Data Center Remote Code Execution Exploited Critical 9.8
• CVE-2022-43782 Auth bypass in Crowd Data Center Critical 9.8
• CVE-2016-6496 Deserialization in n/a Critical 9.8
• CVE-2017-18105 Auth bypass in Crowd High 8.1
• CVE-2023-22521 Code injection in Crowd Data Center High 8.0

Sources

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

Also known as GHSA-jj3c-2ggq-fxgg.