Auth bypass in Percona Server
CVE-2020-26542
An issue was discovered in the MongoDB Simple LDAP plugin through 2020-10-02 for Percona Server when using the SimpleLDAP authentication in conjunction with Microsoft’s Active Directory, Percona has discovered a flaw that would allow authentication to complete when passing a blank value for the account password, leading to access against the service integrated with which Active Directory is deployed at the level granted to the authenticating account.
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.015 (73.9th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 74th percentile — 73.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.015 · newest: 0.015 · change: 0.000
Affected products
Weakness classification (CWE)
References
- www.percona.com/blog/2020/10/13/percona-distribution-for-mysql-pxc-variant-8-0-… (Release Notes, Vendor Advisory)
- jira.percona.com/browse/PS-7358 (Permissions Required, Issue Tracking, Vendor Advisory)
- jira.percona.com/browse/PSMDB-726 (Permissions Required, Issue Tracking, Vendor Advisory)
- www.percona.com/doc/percona-distribution-mysql/8.0/release-notes-pxc-v8.0.20.up… (Release Notes, Vendor Advisory)
Frequently asked questions
- What is CVE-2020-26542?
- CVE-2020-26542 is a critical-severity vulnerability in Percona Server, classified under Improper Authentication. CVSS score: 9.8/10. Published 2020-11-09.
- How severe is CVE-2020-26542?
- Critical severity. CVSS v3 base score is 9.8 out of 10.