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Maniphest T94116

Api watchlist token should be compared in constant time
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Assigned To
Anomie
Authored By
• csteipp
Mar 26 2015, 11:02 PM
Tags
Referenced Files
F1186925: 0001-SECURITY-API-Use-constant-time-comparison-for-watchl.patch
Aug 10 2015, 7:38 PM
F106084: 0001-SECURITY-API-Use-constant-time-comparison-for-watchl.patch
Mar 27 2015, 3:53 PM
Subscribers
Aklapper
• csteipp
• demon
gerritbot
Grunny
Krenair
Legoktm
View All 10 Subscribers

Description

The token comparison in ApiBase::getWatchlistUser() isn't constant time, so timing attack is theoretically possible.

Patch:

0001-SECURITY-API-Use-constant-time-comparison-for-watchl.patch1 KBDownload

  • 1.25 - same as master (
    0001-SECURITY-API-Use-constant-time-comparison-for-watchl.patch1 KBDownload
    )
  • 1.24 - same as master (
    0001-SECURITY-API-Use-constant-time-comparison-for-watchl.patch1 KBDownload
    )
  • 1.23 -
    0001-SECURITY-API-Use-constant-time-comparison-for-watchl.patch3 KBDownload
    (include hash_equals)

Affected Versions:
Type: csrf

Details

SubjectRepoBranchLines +/-
SECURITY: API: Use constant-time comparison for watchlist tokenmediawiki/coremaster+1 -1
SECURITY: API: Use constant-time comparison for watchlist tokenmediawiki/coreREL1_25+1 -1
SECURITY: API: Use constant-time comparison for watchlist tokenmediawiki/coreREL1_24+1 -1
SECURITY: API: Use constant-time comparison for watchlist tokenmediawiki/coreREL1_23+48 -1
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StatusSubtypeAssignedTask
Restricted Task
 ResolvedAnomieT94116 Api watchlist token should be compared in constant time

Event Timeline

• csteipp created this task.Mar 26 2015, 11:02 PM
• csteipp raised the priority of this task from to Low.
• csteipp updated the task description. (Show Details)
• csteipp added a project: acl*security.
• csteipp changed the visibility from "Public (No Login Required)" to "Custom Policy".
• csteipp changed the edit policy from "All Users" to "Custom Policy".
• csteipp changed Security from None to Software security bug.
• csteipp added subscribers: • csteipp, Anomie.
Restricted Application added a subscriber: Aklapper. · View Herald TranscriptMar 26 2015, 11:02 PM
Anomie claimed this task.EditedMar 27 2015, 3:53 PM

0001-SECURITY-API-Use-constant-time-comparison-for-watchl.patch1 KBDownload

Anomie added projects: Patch-For-Review, MediaWiki-Action-API, Reading-Infrastructure-Team-Old (Don't use).Mar 27 2015, 3:54 PM
Anomie moved this task from Backlog to Needs Review/Feedback on the Reading-Infrastructure-Team-Old (Don't use) board.
Anomie moved this task from Unsorted to Needs Review on the MediaWiki-Action-API board.
Legoktm subscribed.Apr 17 2015, 4:54 AM

+1.

The hash_equals fallback was only added in 1.24 (b9e1d5f5c066a26f115eac69e268a98e6591d121), so it'll also have to be backported to 1.23 and 1.19...

Legoktm added a comment.Jun 11 2015, 8:43 PM

+2? Anything else that needs to be done to get this deployed?

• csteipp added a subscriber: • mmodell.Jun 11 2015, 9:56 PM

Slipped off my radar. Patch looks good to me.

@mmodell, can you deploy this and confirm when it's on the cluster?

• csteipp added a parent task: Restricted Task.Jun 11 2015, 9:57 PM
• csteipp closed this task as Resolved.Jul 8 2015, 8:57 PM

20:53 csteipp: deployed patch for T94116 for wmf12/wmf13

• csteipp added subscribers: Grunny, ProgramCeltic.Aug 7 2015, 6:33 PM
• demon subscribed.Aug 10 2015, 7:38 PM

0001-SECURITY-API-Use-constant-time-comparison-for-watchl.patch3 KBDownload

Patch for REL1_23 that includes backport of hash_equals(). Existing patch above already applies cleanly to 1.24, 1.25 and master.

• csteipp updated the task description. (Show Details)Aug 10 2015, 8:18 PM
• csteipp added a project: Vuln-CSRF.
• csteipp changed the visibility from "Custom Policy" to "Public (No Login Required)".Aug 10 2015, 10:00 PM
• csteipp changed the edit policy from "Custom Policy" to "All Users".
• csteipp changed Security from Software security bug to None.
gerritbot subscribed.Aug 10 2015, 10:00 PM

Change 230665 had a related patch set uploaded (by Chad):
SECURITY: API: Use constant-time comparison for watchlist token

https://gerrit.wikimedia.org/r/230665

gerritbot added a comment.Aug 10 2015, 10:03 PM

Change 230669 had a related patch set uploaded (by Chad):
SECURITY: API: Use constant-time comparison for watchlist token

https://gerrit.wikimedia.org/r/230669

gerritbot added a comment.Aug 10 2015, 10:05 PM

Change 230673 had a related patch set uploaded (by Chad):
SECURITY: API: Use constant-time comparison for watchlist token

https://gerrit.wikimedia.org/r/230673

gerritbot added a comment.Aug 10 2015, 10:15 PM

Change 230673 merged by jenkins-bot:
SECURITY: API: Use constant-time comparison for watchlist token

https://gerrit.wikimedia.org/r/230673

• demon mentioned this in rMW8f74aa9ed0d1: SECURITY: API: Use constant-time comparison for watchlist token.Aug 10 2015, 10:16 PM
gerritbot added a comment.Aug 10 2015, 10:20 PM

Change 230669 merged by jenkins-bot:
SECURITY: API: Use constant-time comparison for watchlist token

https://gerrit.wikimedia.org/r/230669

• demon mentioned this in rMW01e5d85ec246: SECURITY: API: Use constant-time comparison for watchlist token.Aug 10 2015, 10:20 PM
gerritbot added a comment.Aug 10 2015, 10:22 PM

Change 230665 merged by jenkins-bot:
SECURITY: API: Use constant-time comparison for watchlist token

https://gerrit.wikimedia.org/r/230665

• demon mentioned this in rMW83af5c1b11b1: SECURITY: API: Use constant-time comparison for watchlist token.Aug 10 2015, 10:22 PM
• Forrestbot added projects: MW-1.24-release, MW-1.23-release, MW-1.25-release.Aug 10 2015, 11:00 PM
Ricordisamoa subscribed.Aug 10 2015, 11:44 PM
gerritbot added a comment.Aug 11 2015, 2:17 PM

Change 230774 had a related patch set uploaded (by Chad):
SECURITY: API: Use constant-time comparison for watchlist token

https://gerrit.wikimedia.org/r/230774

gerritbot added a comment.Aug 11 2015, 2:29 PM

Change 230774 merged by jenkins-bot:
SECURITY: API: Use constant-time comparison for watchlist token

https://gerrit.wikimedia.org/r/230774

• demon mentioned this in rMW00f3e29bfcb8: SECURITY: API: Use constant-time comparison for watchlist token.Aug 11 2015, 2:29 PM
• Forrestbot added projects: WMF-deploy-2015-08-11_(1.26wmf18), MW-1.26-release.Aug 11 2015, 3:00 PM
Krenair subscribed.Aug 31 2015, 12:56 AM

CVE-2015-6728 was assigned for this

• chasemp added a project: Security.Feb 10 2020, 11:00 PM
• chasemp removed a project: acl*security.Feb 20 2020, 8:18 PM
Aklapper removed a subscriber: Anomie.Oct 16 2020, 5:43 PM
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