CVE-2021-20491 Memory corruption in Spectrum Protect Server

What is CVE-2021-20491?

CVE-2021-20491 is a medium-severity memory corruption vulnerability in IBM Spectrum Protect Server, published on 16 Apr 2021. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

IBM Spectrum Protect Server 7.1 and 8.1 is subject to a stack-based buffer overflow caused by improper bounds checking during the parsing of commands. By issuing such a command with an improper parameter, an authorized administrator could overflow a buffer and cause the server to crash. IBM X-Force ID: 197792.

Weakness: CWE-787

Which versions are affected by CVE-2021-20491?

It affects 1 product.

Products include Ibm Spectrum Protect.

How do I fix CVE-2021-20491?

No fix has been published for CVE-2021-20491 yet. Limit exposure of the affected software until one is available.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2021-20491 being exploited?

There is no known exploitation of CVE-2021-20491 in the wild and no public exploit code.

Other vulnerabilities in IBM Spectrum Protect Server

• CVE-2020-4415 Memory corruption in Spectrum Protect Critical 9.8
• CVE-2020-4210 Command injection in Spectrum Protect Plus Critical 9.8
• CVE-2020-4211 Command injection in Spectrum Protect Plus Critical 9.8
• CVE-2020-4212 Command injection in Spectrum Protect Plus Critical 9.8
• CVE-2020-4213 Command injection in Spectrum Protect Plus Critical 9.8

Sources

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

Also known as GHSA-77mx-2f97-rf4c.