Bug 1935724 (CVE-2019-25025)

Summary:	CVE-2019-25025 rubygem-activerecord-session_store: hijack sessions by using timing attacks targeting the session id
Product:	[Other] Security Response	Reporter:	Michael Kaplan <mkaplan>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	akarol, bbuckingham, bcourt, bkearney, btotty, dmetzger, ehelms, gmccullo, gtanzill, hhudgeon, jhardy, lzap, mmccune, nmoumoul, pcreech, rchan, rjerrido, roliveri, simaishi, smallamp, sokeeffe
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:	A flaw was found in the activerecord-session_store (Active Record Session Store) component through version 1.1.3 for Ruby on Rails where it does not use a constant time approach when delivering information about whether a guessed session ID is valid. This flaw allows remote attackers to leverage timing discrepancies to achieve a correct guess in a relatively short amount of time.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2021-11-13 15:51:36 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	1936552, 1936553
Bug Blocks:	1935725

Description Michael Kaplan 2021-03-05 13:09:16 UTC

The activerecord-session_store (aka Active Record Session Store) component through 1.1.3 for Ruby on Rails does not use a constant-time approach when delivering information about whether a guessed session ID is valid. Consequently, remote attackers can leverage timing discrepancies to achieve a correct guess in a relatively short amount of time. This is a related issue to CVE-2019-16782.

Comment 2 Yadnyawalk Tale 2021-03-08 17:53:46 UTC

Proposed patch: https://github.com/rails/activerecord-session_store/pull/151 
(Not merged into activerecord-session_store yet).

Comment 4 Yadnyawalk Tale 2021-03-09 16:50:21 UTC

External References:

https://github.com/advisories/GHSA-cvw2-xj8r-mjf7

Comment 9 Eric Helms 2021-04-28 13:10:42 UTC

The upstream fix for this has been merged and released as part of activerecord-session_store version 2.0.0. I think this can move states now.

Comment 11 errata-xmlrpc 2021-11-16 14:08:00 UTC

This issue has been addressed in the following products:

  Red Hat Satellite 6.10 for RHEL 7

Via RHSA-2021:4702 https://access.redhat.com/errata/RHSA-2021:4702