CVE-2020-4590 Denial of service in WebSphere Application Server Liberty

What is CVE-2020-4590?

CVE-2020-4590 is a medium-severity denial of service vulnerability in Ibm Websphere Application Server, published on 21 Sep 2020. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

IBM WebSphere Application Server Liberty 17.0.0.3 through 20.0.0.9 running oauth-2.0 or openidConnectServer-1.0 server features is vulnerable to a denial of service attack conducted by an authenticated client. IBM X-Force ID: 184650.

Which versions are affected by CVE-2020-4590?

It affects 1 product.

Products include Ibm Websphere Application Server.

How do I fix CVE-2020-4590?

No fix has been published for CVE-2020-4590 yet. Limit exposure of the affected software until one is available.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2020-4590 being exploited?

There is no known exploitation of CVE-2020-4590 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-7v3j-q8g3-xrh3.