CVE-2020-4642 Denial of service in DB2 for Linux- UNIX and Windows

What is CVE-2020-4642?

CVE-2020-4642 is a medium-severity denial of service vulnerability in Ibm Db2, published on 23 Dec 2020. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

IBM DB2 for Linux, UNIX and Windows (includes DB2 Connect Server) 9.7, 10.1, 10.5, 11.1, and 11.5 could allow local attacker to cause a denial of service inside the "DB2 Management Service".

Which versions are affected by CVE-2020-4642?

It affects 1 product.

Products include Ibm Db2.

How do I fix CVE-2020-4642?

No fix has been published for CVE-2020-4642 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-2020-4642 being exploited?

There is no known exploitation of CVE-2020-4642 in the wild and no public exploit code.

Other vulnerabilities in Ibm Db2

• CVE-2012-1797 IBM DB2 9.5 uses world-writable permissions for nodes.reg, which has unspecified impact and attack vectors. Critical 10.0
• CVE-2010-3731 Memory corruption in n/a Critical 10.0
• CVE-2010-3193 Other in n/a Critical 10.0
• CVE-2009-4335 Other in n/a Critical 10.0
• CVE-2009-3473 Missing authorization in n/a Critical 10.0

All Ibm Db2 vulnerabilities

Sources

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

Also known as GHSA-jvr7-4f7q-4v6w.