#VU53313 Information Exposure Through Timing Discrepancy in Prosody - CVE-2021-32921
Published: May 17, 2021
Vulnerability identifier: #VU53313
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2021-32921
CWE-ID: CWE-208
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
Prosody
Prosody
Software vendor:
Prosody
Prosody
Description
The vulnerability allows a remote attacker to gain access to sensitive information.
The vulnerability exists due to the application does not use a constant-time algorithm for comparing certain secret strings when running under Lua 5.2 or later. This can potentially be used in a timing attack to reveal the contents of secret strings to an attacker.
Remediation
Install updates from vendor's website.