#VU53313 Information Exposure Through Timing Discrepancy in Prosody
Vulnerability identifier: #VU53313
Vulnerability risk: Low
CVSSv3.1: 3.2 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-208
Exploitation vector: Network
Exploit availability: No
Vulnerable software:
Prosody
Server applications /
Mail servers
Vendor: 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.
Mitigation
Install updates from vendor's website.
Vulnerable software versions
Prosody: 0.11.0 - 0.11.8
External links
http://blog.prosody.im/prosody-0.11.9-released/
http://www.openwall.com/lists/oss-security/2021/05/13/1
http://www.openwall.com/lists/oss-security/2021/05/14/2
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
