SB2024021210 - Timing attack in SASL token signature verification in Apache Pulsar
Published: February 12, 2024
Security Bulletin ID
SB2024021210
CSH Severity
High
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Observable discrepancy (CVE-ID: CVE-2023-51437)
CWE-ID: CWE-203 - Observable discrepancy
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Amber
The vulnerability allows a remote attacker to bypass authentication.
The vulnerability exists due to observable timing discrepancy in SASL authentication provider. A remote attacker can forge a SASL Role Token that will pass signature verification and bypass SASL authentication.
Remediation
Install update from vendor's website.