CVE-2020-26542 Auth bypass in n/a

Critical 9.8 Published Updated

Attackers can bypass authentication in Percona Server's Simple LDAP plugin by providing a blank password when using Active Directory.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
Not needed
Fix
Available

What is CVE-2020-26542?

CVE-2020-26542 is a critical authentication bypass vulnerability in n/a, published on 9 Nov 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

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.

Weakness: CWE-287

Which versions are affected by CVE-2020-26542?

It affects 1 product.

Products include Percona Percona Server.

How do I fix CVE-2020-26542?

Apply the vendor's patch.

Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.

Is CVE-2020-26542 being exploited?

There is no known exploitation of CVE-2020-26542 in the wild and no public exploit code.

Sources

Also known as GHSA-q88m-4hg8-4h3h, MINI-28vr-7244-9fwp, MINI-9f67-wpjv-2wh8, MINI-9qpv-392w-8rvp.

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