CVE-2020-4945 Missing authorization in DB2 for Linux and UNIX

What is CVE-2020-4945?

CVE-2020-4945 is a medium-severity missing authorization vulnerability in Ibm Db2, published on 24 Jun 2021. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

IBM Db2 for Linux, UNIX and Windows (includes Db2 Connect Server) 11.5 could allow an authenticated user to overwrite arbirary files due to improper group permissions. IBM X-Force ID: 191945.

Weakness: CWE-732

Which versions are affected by CVE-2020-4945?

It affects 1 product.

Products include Ibm Db2.

How do I fix CVE-2020-4945?

No fix has been published for CVE-2020-4945 yet. Limit exposure of the affected software until one is available.

Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.

Is CVE-2020-4945 being exploited?

There is no known exploitation of CVE-2020-4945 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-fhg4-xhw8-92hr.