What is CVE-2021-20491?

CVE-2021-20491 is a vulnerability in IBM Spectrum Protect Server that allows an authorized administrator to overflow a buffer and crash the server by issuing a command with an improper parameter.

What is the severity of CVE-2021-20491?

CVE-2021-20491 has a severity value of 4.4, which is considered medium.

How does CVE-2021-20491 impact IBM Spectrum Protect Server?

CVE-2021-20491 can crash the IBM Spectrum Protect Server by causing a stack-based buffer overflow during command parsing.

How can an authorized administrator exploit CVE-2021-20491?

An authorized administrator can exploit CVE-2021-20491 by issuing a command with an improper parameter.

Is there a fix for CVE-2021-20491?

Yes, IBM has released updates to fix CVE-2021-20491. Please refer to the IBM support page for more information.

Vulnerability/
CVE-2021-20491

medium

4.4

CWE

787 119

15/4/2021

3/8/2024

CVE-2021-20491: Buffer Overflow

First published: Thu Apr 15 2021(Updated: )

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.

Credit: psirt@us.ibm.com

Affected Software	Affected Version	How to fix
IBM Spectrum Protect	>=7.1.0.000<7.1.13
IBM Spectrum Protect	>=8.1.0.000<=8.1.10.100
IBM Spectrum Protect	=8.1.11.000
	<=8.1.0.000-8.1.10.100 and 8.1.11.0007.1.0.000-7.1.12.xxx

Remedy

https://www.ibm.com/support/pages/node/6442993

Never miss a vulnerability like this again

Reference Links

Parent vulnerabilities

(Appears in the following advisories)

IBM-6442993

Frequently Asked Questions

What is CVE-2021-20491?
CVE-2021-20491 is a vulnerability in IBM Spectrum Protect Server that allows an authorized administrator to overflow a buffer and crash the server by issuing a command with an improper parameter.
What is the severity of CVE-2021-20491?
CVE-2021-20491 has a severity value of 4.4, which is considered medium.
How does CVE-2021-20491 impact IBM Spectrum Protect Server?
CVE-2021-20491 can crash the IBM Spectrum Protect Server by causing a stack-based buffer overflow during command parsing.
How can an authorized administrator exploit CVE-2021-20491?
An authorized administrator can exploit CVE-2021-20491 by issuing a command with an improper parameter.
Is there a fix for CVE-2021-20491?
Yes, IBM has released updates to fix CVE-2021-20491. Please refer to the IBM support page for more information.

collector/nvd-index
agent/references
agent/type
agent/first-publish-date
collector/mitre-cve
source/MITRE
collector/ibm-support
source/IBM
agent/software-canonical-lookup
agent/last-modified-date
agent/severity
agent/weakness
agent/remedy
agent/author
agent/tags
agent/softwarecombine
agent/description
agent/event
vendor/ibm
canonical/ibm spectrum protect
version/ibm spectrum protect/7.1.0.000
version/ibm spectrum protect/8.1.0.000
version/ibm spectrum protect/8.1.10.100
version/ibm spectrum protect/8.1.11.000
canonical/ibm spectrum protect server
version/ibm spectrum protect server/8.1.0.000-8.1.10.100 and 8.1.11.0007.1.0.000-7.1.12.xxx

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