SB2023021706 - Padding oracle in cookie encryption in FortiSwitch
Published: February 17, 2023
Security Bulletin ID
SB2023021706
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Information disclosure
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Improper Verification of Cryptographic Signature (CVE-ID: CVE-2021-43074)
CWE-ID: CWE-347 - Improper Verification of Cryptographic Signature
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a remote user to gain access to sensitive information.
The vulnerability exists due to improper verification of cryptographic signature when handling cookie files. A remote user can decrypt portions of the administrative session management cookie (padding oracle in cookie encryption) and escalate privileges on the device.
Remediation
Install update from vendor's website.