Security Bulletin: Vulnerability in Flask and Python affects IBM Spectrum Protect Plus Microsoft File Systems Backup and Restore (CVE-2021-33026, CVE-2022-0391)

Security Bulletin

Summary

Elevation of privileges vulnerability in Flask and weaker than expected security in Python can affect IBM Spectrum Protect Plus Microsoft® File Systems backup and restore.

Vulnerability Details

CVEID: CVE-2021-33026
DESCRIPTION: Flask-Caching extension for Flask could allow a local lauthenticated attacker to gain elevated privileges on the system, caused by an unsafe deserialization flaw in Pickle. By sending a specially-crested payload, an authenticated attacker could exploit this vulnerability to gain elevated privileges to poison the cache, and execute Python code.
CVSS Base score: 7.8
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/201958 for the current score.
CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)

CVEID: CVE-2022-0391
DESCRIPTION: Python could provide weaker than expected security, cause by a improper input validation by the urllib.parse module. By sending a specially-crafted request using \r and \n characters in the URL path. An attacker could exploit this vulnerability to perform injection attack or launch further attacks on the system.
CVSS Base score: 5.3
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/219613 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N)

Affected Products and Versions

Affected Product(s)	Version(s)
IBM Spectrum Protect Plus File Systems Agent	10.1.6.0-10.1.9.3

Remediation/Fixes

BM Spectrum Protect Plus Affected Versions	Fixing Level	Platform	Link to Fix and Instructions
10.1.6.0-10.1.9.3	10.1.10	Windows	https://www.ibm.com/support/pages/node/6552532

Workarounds and Mitigations

None

Get Notified about Future Security Bulletins

Subscribe to My Notifications to be notified of important product support alerts like this.

References

Complete CVSS v3 Guide
On-line Calculator v3

Off

Acknowledgement

Change History

11 March 2022: Initial Publication

*The CVSS Environment Score is customer environment specific and will ultimately impact the Overall CVSS Score. Customers can evaluate the impact of this vulnerability in their environments by accessing the links in the Reference section of this Security Bulletin.

Disclaimer

Review the IBM security bulletin disclaimer and definitions regarding your responsibilities for assessing potential impact of security vulnerabilities to your environment.

Document Location

Worldwide

[{"Business Unit":{"code":"BU058","label":"IBM Infrastructure w\/TPS"},"Product":{"code":"SSNQFQ","label":"IBM Spectrum Protect Plus"},"Component":"","Platform":[{"code":"PF033","label":"Windows"}],"Version":"10.1","Edition":"","Line of Business":{"code":"LOB26","label":"Storage"}}]

Tips

Security Bulletin: Vulnerability in Flask and Python affects IBM Spectrum Protect Plus Microsoft File Systems Backup and Restore (CVE-2021-33026, CVE-2022-0391)