CVE-2020-8919 Information leakage in Gerrit

Low 3.5 Published Updated

An attacker with default privileges can read other users' personal account data and restricted sub-trees due to a missing access check in the branch REST API.

Exploited in the wild
Not known
Login needed
Any signed-in user
Attackable
Local or same network only
Victim action needed
Not needed
Fix
None listed

What is CVE-2020-8919?

CVE-2020-8919 is a low-severity missing authorization vulnerability in Gerrit, published on 10 Dec 2020. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

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.

Weakness: CWE-863, CWE-285

Which versions are affected by CVE-2020-8919?

It affects 1 product.

Products include Google Gerrit.

How do I fix CVE-2020-8919?

No fix has been published for CVE-2020-8919 yet. Limit exposure of the affected software until one is available.

Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.

Is CVE-2020-8919 being exploited?

There is no known exploitation of CVE-2020-8919 in the wild and no public exploit code.

Sources

Also known as GHSA-xh5j-7f7g-7g5c.

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