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Improve URL validation for external wiki and external issues #4710

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merged 3 commits into from
Aug 15, 2018

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@lafriks lafriks commented Aug 14, 2018

Fixes #4703

@lafriks lafriks added topic/security Something leaks user information or is otherwise vulnerable. Should be fixed! backport/v1.5 labels Aug 14, 2018
@lafriks lafriks added this to the 1.6.0 milestone Aug 14, 2018
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codecov-io commented Aug 14, 2018

Codecov Report

Merging #4710 into master will increase coverage by 0.07%.
The diff coverage is 79.59%.

Impacted file tree graph

@@            Coverage Diff             @@
##           master    #4710      +/-   ##
==========================================
+ Coverage   20.63%   20.71%   +0.07%     
==========================================
  Files         166      167       +1     
  Lines       32314    32355      +41     
==========================================
+ Hits         6669     6702      +33     
- Misses      24665    24672       +7     
- Partials      980      981       +1
Impacted Files Coverage Δ
routers/repo/setting.go 6.68% <0%> (-0.08%) ⬇️
modules/validation/binding.go 100% <100%> (ø) ⬆️
modules/validation/helpers.go 92.3% <92.3%> (ø)

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@bkcsoft bkcsoft added the lgtm/need 2 This PR needs two approvals by maintainers to be considered for merging. label Aug 14, 2018
@bkcsoft bkcsoft added lgtm/need 1 This PR needs approval from one additional maintainer to be merged. and removed lgtm/need 2 This PR needs two approvals by maintainers to be considered for merging. labels Aug 14, 2018
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techknowlogick commented Aug 14, 2018

@lafriks I have some thoughts about blocking localhost URLs. Some users might host Gitea behind a reverse proxy under a sub-path which means they might need to have localhost (or 127.0.0.1) as a valid external issues URL (assuming they host everything on same machine).

Edit: We should deal with blocking in the SSRF patch to make it customizable.

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lafriks commented Aug 14, 2018

@techknowlogick even if you run gitea behind reverse proxy this validates only URL's that will be presented for user not server<->server communication.

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@lafriks yes, I understand. But a user might run JIRA locally (hopefully they don't), but that might be possible, this would block them from doing that.

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lafriks commented Aug 14, 2018

when creating these function I had in mind to reused/extend them for SSRF fix later but this is not what this PRs is about :)

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lafriks commented Aug 14, 2018

You mean user is running gitea&jira on local laptop and accessing it by localhost? Chance of such need is close to zero and anyway you can use your hostname/lan ip. Besides this PR will not break existing configurations but just won't allow adding such urls in future

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techknowlogick commented Aug 14, 2018

@lafriks lolya. that's correct. I also believe chance is near zero, but as this wouldn't prevent a DNS re-binding attach (say for example I set local.techknowlogick.com to 127.0.0.1) this would bypass our validation and would be accepted, so I think unless we do a DNS lookup for the URL we shouldn't block it unless we block all cases.

My opinion is weakly held, I also see the merits of what you've said, so my LG-TM on this PR still applies.

Edit: Fixed my typos

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@lafriks I see the TODO now (thanks for the reminder in chat). That's acceptable for me. Please disregard what I've said above. My LG-TM is now 100%

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lunny commented Aug 15, 2018

LGTM

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lafriks commented Aug 15, 2018

Make LG-TM work

@bkcsoft bkcsoft added lgtm/done This PR has enough approvals to get merged. There are no important open reservations anymore. and removed lgtm/need 1 This PR needs approval from one additional maintainer to be merged. labels Aug 15, 2018
@lafriks lafriks merged commit 9246612 into go-gitea:master Aug 15, 2018
@lafriks lafriks deleted the fix/url_validation_ext_issue branch August 15, 2018 06:29
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lunny commented Aug 15, 2018

@lafriks please send a back port PR.

lafriks added a commit to lafriks-fork/gitea that referenced this pull request Aug 17, 2018
…a#4710)

* Improve URL validation for external wiki  and external issues

* Do not allow also localhost address for external URLs
@lafriks lafriks added the backport/done All backports for this PR have been created label Aug 17, 2018
techknowlogick pushed a commit that referenced this pull request Aug 18, 2018
…4740)

* Improve URL validation for external wiki  and external issues

* Do not allow also localhost address for external URLs
glitch003 pushed a commit to deconet/gitea that referenced this pull request Aug 21, 2018
…a#4710) (go-gitea#4740)

* Improve URL validation for external wiki  and external issues

* Do not allow also localhost address for external URLs
aswild added a commit to aswild/gitea that referenced this pull request Oct 24, 2018
Prepare for wild/v1.6 branch

* BREAKING
  * Respect email privacy option in user search via API (go-gitea#4512)
  * Simply remove tidb and deps (go-gitea#3993)
  * Swagger.v1.json template (go-gitea#3572)
* FEATURE
  * Pull request review/approval and comment on code (go-gitea#3748)
  * Added dependencies for issues (go-gitea#2196) (go-gitea#2531)
  * Add the ability to have built in themes in Gitea and provide dark theme arc-green (go-gitea#4198)
  * Add sudo functionality to the API (go-gitea#4809)
  * Add oauth providers via cli (go-gitea#4591)
  * Disable merging a WIP Pull request (go-gitea#4529)
  * Force user to change password (go-gitea#4489)
  * Add letsencrypt to Gitea (go-gitea#4189)
  * Add push webhook support for mirrored repositories (go-gitea#4127)
  * Add csv file render support defaultly (go-gitea#4105)
  * Add Recaptcha functionality to Gitea (go-gitea#4044)
* BUGFIXES
  * Fix release creation via API (go-gitea#5076)
  * Remove links from topics in edit mode  (go-gitea#5026)
  * Fix missing AppSubUrl in few more templates (fixup) (go-gitea#5021)
  * Fix missing AppSubUrl in some templates (go-gitea#5020)
  * Hide outdated comments in file view (go-gitea#5017)
  * Upgrade gopkg.in/testfixtures.v2 (go-gitea#4999)
  * Disable debug routes unless PPROF is enabled in configuration (go-gitea#4995)
  * Fix user menu item styling (go-gitea#4985)
  * Fix layout of the topics editing form (go-gitea#4971)
  * Fix null pointer dereference in ParseCommitWithSignature (go-gitea#4962)
  * Fix url in discord webhook (go-gitea#4953)
  * Detect charset and convert non UTF-8 files for display (go-gitea#4950)
  * Make sure to catch the right error so it is displayed on the UI (go-gitea#4945)
  * Fix(topics): don't redirect to explore page. (go-gitea#4938)
  * Fix bug forget to remove Stopwatch when remove repository (go-gitea#4928)
  * Fix bug when repo remained bare if multiple branches pushed in single push (go-gitea#4923)
  * Fix: Let's Encrypt configuration settings (go-gitea#4911)
  * Fix: Crippled diff (go-gitea#4726) (go-gitea#4900)
  * Fix trimming of markup section names (go-gitea#4863)
  * Issues api allow pulls and fix go-gitea#4832 (go-gitea#4852)
  * Do not autocreate directory for new users/orgs (go-gitea#4828) (go-gitea#4849)
  * Fix redirect with non-ascii branch names (go-gitea#4764) (go-gitea#4810)
  * Fix missing release title in webhook (go-gitea#4783) (go-gitea#4796)
  * User shouldn't be able to approve or reject his/her own PR (go-gitea#4729)
  * Make sure to reset commit count in the cache on mirror syncing (go-gitea#4720)
  * Fixed bug where team with admin privelege type doesn't get any unit  (go-gitea#4719)
  * Fix incorrect caption of webhook setting (go-gitea#4701) (go-gitea#4717)
  * Allow WIP marker to contains < or > (go-gitea#4709)
  * Hide org/create menu item in Dashboard if user has no rights (go-gitea#4678) (go-gitea#4680)
  * Site admin could create repos even MAX_CREATION_LIMIT=0 (go-gitea#4645)
  * Fix custom templates being ignored (go-gitea#4638)
  * Fix starring icon after semantic ui update (go-gitea#4628)
  * Fix Split-View line adjustment (go-gitea#4622)
  * Fix integer constant overflows in tests (go-gitea#4616)
  * Push whitelist now doesn't apply to branch deletion (go-gitea#4601) (go-gitea#4607)
  * Fix bugs when too many IN variables (go-gitea#4594)
  * Fix failure on creating pull request with assignees (go-gitea#4419) (go-gitea#4583)
  * Fix panic issue on update avatar email (go-gitea#4580) (go-gitea#4581)
  * Fix status code label for a successful webhook (go-gitea#4540)
  * An inactive user shouldn't be able to be added as a collaborator (go-gitea#4535)
  * Don't fail silently if trying to add a collaborator twice (go-gitea#4533)
  * Fix incorrect MergeWhitelistTeamIDs check in CanUserMerge function (go-gitea#4519) (go-gitea#4525)
  * Fix out-of-transaction query in removeOrgUser (go-gitea#4521) (go-gitea#4522)
  * Fix migration from older releases (go-gitea#4495)
  * Accept 'Data:' in commit graph (go-gitea#4487)
  * Update xorm to latest version and fix correct `user` table referencing in sql (go-gitea#4473)
  * Relative URLs for LibreJS page (go-gitea#4460)
  * Redirect to correct page after using scratch token (go-gitea#4458)
  * Fix column droping for MSSQL that need new transaction for that (go-gitea#4440)
  * Replace src with raw to fix image paths (go-gitea#4377)
  * Add default merge options when creating new repository (go-gitea#4369)
  * Fix docker build (go-gitea#4358)
  * Fixes repo membership check in API (go-gitea#4341)
  * Dep upgrade mysql lib (go-gitea#4161)
  * Fix some issues with special chars in branch names (go-gitea#3767)
  * Responsive design fixes (go-gitea#4508)
* ENHANCEMENT
  * Fix milestones sorted wrongly (go-gitea#4987)
  * Allow api to create tags for releases if they don't exist (go-gitea#4890)
  * Fix go-gitea#4877 to follow the OpenID Connect Audiences spec (go-gitea#4878)
  * Enforce token on api routes [fixed critical security issue go-gitea#4357] (go-gitea#4840)
  * Update legacy branch and tag URLs in dashboard to new format (go-gitea#4812)
  * Slack webhook channel name cannot be empty or just contain an hashtag (go-gitea#4786)
  * Add whitespace handling to PR-comparsion (go-gitea#4683)
  * Make reverse proxy auth optional (go-gitea#4643)
  * MySQL TLS (go-gitea#4642)
  * Make sure to set PR split view when creating/previewing a pull request  (go-gitea#4617)
  * Log user in after a successful sign up (go-gitea#4615)
  * Fix typo IsPullReuqestBroken -> IsPullRequestBroken (go-gitea#4578)
  * Allow admin toggle forcing a password change for newly created users (go-gitea#4563)
  * Update jQuery to v1.12.4 (go-gitea#4551)
  * Env var GITEA_PUSHER_EMAIL (go-gitea#4516)
  * Feat(repo): support search repository by topic name (go-gitea#4505)
  * Small improvements to dependency UI (go-gitea#4503)
  * Make max commits in graph configurable (go-gitea#4498)
  * Add valid for lfs oid (go-gitea#4461)
  * Add shortcut to save wiki page (go-gitea#4452)
  * Allow administrator to create repository for any organization (go-gitea#4368)
  * Fix repository last updated time update when delete a user who watched the repo (go-gitea#4363)
  * Switch plaintext scratch tokens to use hash instead (go-gitea#4331)
  * Increase default TOTP secret size to 320 bits (go-gitea#4287)
  * Keep preseeded database password (go-gitea#4284)
  * Implemented hover text showing user FullName (go-gitea#4261)
  * Add ability to delete a token (go-gitea#4235)
  * Fix typos in i18n variable names. (go-gitea#4080)
  * Api: repos/search: add parameters to control the sort order (go-gitea#3964)
  * Add missing path in the Docker app.ini template (go-gitea#2181)
  * Add file name and branch to page title (go-gitea#4902)
  * Offline use of google fonts (go-gitea#4872)
  * Add missing History link to directory listings v2 (go-gitea#4829)
  * Locale for Edit and Remove due date issue (go-gitea#4802)
  * Disable 'May Import Local Repository' when is disabled by setting (Is… (go-gitea#4780)
  * API /admin/users/{username} missing parameter (go-gitea#4775)
  * Display error when adding a user to a team twice (go-gitea#4746)
  * Remove UsePrivilegeSeparation from the Docker sshd_config, see go-gitea#2876 (go-gitea#4722)
  * Focus title input when clicking helper link (go-gitea#4696)
  * Add vendor to user reserved words and format words list according alphabet (go-gitea#4685)
  * Add gitea/issues link to 500 page (go-gitea#4654)
  * Hide home button when landing page is not set to home (go-gitea#4651)
  * Remove link to GitHub issues in 404 template (go-gitea#4639)
  * Cmd/serve: pprof cpu and memory profile dumps to disk (go-gitea#4560)
  * Add flash message after an account has been successfully activated (go-gitea#4510)
  * Prevent html entity escaping on delete branch (go-gitea#4471)
  * Locale for button Edit on protected branch (go-gitea#4442)
  * Update notification icon (go-gitea#4343)
  * Added front-end topics validation (go-gitea#4316)
  * Don't display buttons if there are no system notifications (go-gitea#4280)
  * Issue due date api (go-gitea#3890)
* SECURITY
  * Improve URL validation for external wiki  and external issues (go-gitea#4710)
  * Make cookies HttpOnly and obey COOKIE_SECURE flag (go-gitea#4706)
  * Don't disclose emails of all users when sending out emails (go-gitea#4664)
  * Check that repositories can only be migrated to own user or organizations (go-gitea#4366)
* TRANSLATION
  * Fix punctuation in English translation (go-gitea#4958)
  * Fix translation (go-gitea#4355)
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backport/done All backports for this PR have been created lgtm/done This PR has enough approvals to get merged. There are no important open reservations anymore. topic/security Something leaks user information or is otherwise vulnerable. Should be fixed!
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[Security] Stored XSS. Account Takeover possilble.
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