Security Bulletin: Vulnerabilities in Flask and Pallets Werkzeug may affect IBM Spectrum Protect Plus Microsoft File Systems Backup and Restore (CVE-2023-30861, CVE-2023-25577, CVE-2023-23934)

Summary

IBM Spectrum Protect Plus Microsoft File Systems Backup and Restore can be affected by vulnerabilities in Flask and Pallets Werkzeug include obtain sensitive information, denial of service attacks and bypass security restrictions, as described by the CVEs in the “Vulnerability Details” section.

Vulnerability Details

CVEID:CVE-2023-30861
**DESCRIPTION:**Pallets Flask could allow a remote attacker to obtain sensitive information, caused by missing Vary: Cookie header. By sending a specially crafted request, an attacker could exploit this vulnerability to obtain permanent session cookie information, and use this information to launch further attacks against the affected system.
CVSS Base score: 7.5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/254247 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N)

CVEID:CVE-2023-25577
**DESCRIPTION:**Pallets Werkzeug is vulnerable to a denial of service, caused by a flaw when parsing multipart form data with many fields. By sending a specially-crafted request, a remote attacker could exploit this vulnerability to cause a denial of service condition.
CVSS Base score: 7.5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/247557 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)

CVEID:CVE-2023-23934
**DESCRIPTION:**Pallets Werkzeug could allow a remote attacker to bypass security restrictions, caused by improper input validation. By sending a specially-crafted request, an attacker could exploit this vulnerability to set a cookie like =__Host-test=bad for another subdomain.
CVSS Base score: 2.6
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/247553 for the current score.
CVSS Vector: (CVSS:3.0/AV:A/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N)

Affected Products and Versions

Remediation/Fixes

IBM Spectrum Protect **Plus Affected Versions
**|**Fixing
**Level|Platform|**Link to Fix and Instructions
**
—|—|—|—
10.1.6-10.1.14| 10.1.15| Windows|

<https://www.ibm.com/support/pages/node/6988945&gt;

Workarounds and Mitigations

None