[Security] Bump wagtail from 2.8.1 to 2.8.2

[dependabot-preview]

Bumps wagtail from 2.8.1 to 2.8.2. This update includes a security fix.

Vulnerabilities fixed

Sourced from The GitHub Security Advisory Database.

Potential Observable Timing Discrepancy in Wagtail

Impact

A potential timing attack exists on pages or documents that have been protected with a shared password through Wagtail's "Privacy" controls. This password check is performed through a character-by-character string comparison, and so an attacker who is able to measure the time taken by this check to a high degree of accuracy could potentially use timing differences to gain knowledge of the password. (This is understood to be feasible on a local network, but not on the public internet.)

Privacy settings that restrict access to pages / documents on a per-user or per-group basis (as opposed to a shared password) are unaffected by this vulnerability.

Patches

Patched versions have been released as Wagtail 2.7.3 (for the LTS 2.7 branch), Wagtail 2.8.2 and Wagtail 2.9.

Workarounds

Site owners who are unable to upgrade to the new versions can use user- or group-based privacy restrictions to restrict access to sensitive information; these are unaffected by this vulnerability.

Affected versions: >= 2.8.0, < 2.8.2

Release notes

Sourced from wagtail's releases.

2.8.2

CVE-2020-11037 - avoid potential timing attack on password-protected private pages (Thibaud Colas)

Changelog

Sourced from wagtail's changelog.

2.8.2 (04.05.2020)

 * Fix: CVE-2020-11037 - avoid potential timing attack on password-protected private pages (Thibaud Colas)

Commits

• 6d3cd18 Release note for 2.8.2
• c21376e Release note for 2.7.3
• 647e8d6 Version bump to 2.8.2
• bac3cd0 Use constant_time_compare for view restriction password checks
• See full diff in compare view

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[dependabot-preview]

Superseded by #127.