SB2020050450 - Information Exposure Through Timing Discrepancy in wagtail

Description

This security bulletin contains information about 1 vulnerability.

1) Information Exposure Through Timing Discrepancy (CVE-ID: CVE-2020-11037)

The vulnerability allows a remote attacker to disclose sensitive information.

The vulnerability exists due to observable timing discrepancies in password comparison in Wagtail privacy controls for password-protected pages and documents when handling shared-password access checks. A remote attacker can measure response times with high accuracy to disclose sensitive information.

Exploitation is understood to be feasible on a local network, but not on the public internet. Privacy restrictions based on individual users or groups are unaffected.

Remediation

Install update from vendor's website.

References

• https://github.com/wagtail/wagtail/security/advisories/GHSA-jjjr-3jcw-f8v6