An information leak vulnerability exists in Gerrit versions prior to 2.15.21, 2.16.25, 3.0.15, 3.1.10, 3.2.5 where a missing access check on the branch REST API allows an attacker with only the default set of priviledges to read all other user's personal account data as well as sub-trees with restricted access.

References

• https://nvd.nist.gov/vuln/detail/CVE-2020-8919
• https://gerrit.googlesource.com/gerrit/+/0532fb876cb86bc091a91f78e6f28fff9e39ca65
• https://www.gerritcodereview.com/2.15.html#21521
• https://www.gerritcodereview.com/2.16.html#21625
• https://www.gerritcodereview.com/3.0.html#3014
• https://www.gerritcodereview.com/3.1.html#3110
• https://www.gerritcodereview.com/3.2.html#325