SB2023112077 - Debian update for zookeeper
Published: November 20, 2023
Security Bulletin ID
SB2023112077
Severity
Medium
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 security vulnerability.
1) Authorization bypass through user-controlled key (CVE-ID: CVE-2023-44981)
The vulnerability allows a remote attacker to bypass authorization process.
The vulnerability exists due to improper implementation of SASL Quorum Peer authentication. The instance part in SASL authentication ID, which is listed in zoo.cfg server
list, is optional and if it's missing,
the authorization check will be skipped. As a
result an arbitrary endpoint could join the cluster and begin
propagating counterfeit changes to the leader, essentially giving it
complete read-write access to the data tree.
Remediation
Install update from vendor's website.