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

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

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&gt;

Workarounds and Mitigations

None