CVE-2021-20354 Path traversal in WebSphere Application Server

What is CVE-2021-20354?

CVE-2021-20354 is a medium-severity path traversal vulnerability in Ibm Websphere Application Server, published on 18 Feb 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

IBM WebSphere Application Server 8.0, 8.5, and 9.0 could allow a remote attacker to traverse directories. An attacker could send a specially-crafted URL request containing "dot dot" sequences (/../) to view arbitrary files on the system. IBM X-Force ID: 194883.

Weakness: CWE-22

Which versions are affected by CVE-2021-20354?

It affects 1 product.

Products include Ibm Websphere Application Server.

How do I fix CVE-2021-20354?

No fix has been published for CVE-2021-20354 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-2021-20354 being exploited?

There is no known exploitation of CVE-2021-20354 in the wild and no public exploit code.

Other vulnerabilities in Ibm Websphere Application Server

• CVE-2015-1920 Code injection in n/a Critical 10.0
• CVE-2013-0462 Other in n/a Critical 10.0
• CVE-2011-1377 Security feature bypass in n/a Critical 10.0
• CVE-2010-3186 Other in n/a Critical 10.0
• CVE-2009-1899 Information disclosure in n/a Critical 10.0

All Ibm Websphere Application Server vulnerabilities

Sources

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

Also known as GHSA-qq58-vj5v-jxhv.