EC: proxy server returns wrong response on range GET

Bug #1475499 reported by Kota Tsuyuzaki
6
This bug affects 1 person
Affects Status Importance Assigned to Milestone
OpenStack Object Storage (swift)
Fix Released
Medium
Daisuke Morita

Bug Description

In EC case, proxy-server may return wrong response body and content length to client for unsatisfied range GET .

e.g.:
EC policy uses 1MB segment size. (default value for EC)

- PUT an 5 bytes object to an EC container
- GET the object with range bytes=1048575- => 416 with response body
- GET the object with range bytes=1048576- => 416 but the response shows content length as 5 and no body was coming in. My curl client stuck there.
(expected content_length=97 and the body, "<html><h1>Requested Range Not Satisfiable</h><p>The Range requested is not available.</p></html>")

i.e.:
To request to get the range more than ceil(object_size/segment_size) * segment_size for EC object, proxy-server seems not to handle the request correctly.

This was found at the conversation with Sam at following patch:
https://review.openstack.org/#/c/202864/

CVE References

Changed in swift:
assignee: nobody → Daisuke Morita (morita-daisuke)
Changed in swift:
status: New → Confirmed
Changed in swift:
importance: Undecided → Medium
Revision history for this message
paul luse (paul-e-luse) wrote :

Hmmm, why didn't the system link this to https://review.openstack.org/#/c/204892/ where the proposed fix it at?

Revision history for this message
OpenStack Infra (hudson-openstack) wrote : Fix merged to swift (master)

Reviewed: https://review.openstack.org/204892
Committed: https://git.openstack.org/cgit/openstack/swift/commit/?id=5b246e875fe9ac3d764ea581ad52b04238f5bcc8
Submitter: Jenkins
Branch: master

commit 5b246e875fe9ac3d764ea581ad52b04238f5bcc8
Author: Kota Tsuyuzaki <email address hidden>
Date: Wed Jul 22 10:39:22 2015 -0700

    Fix EC range GET/COPY handling

    When range GET (or COPY) for an EC object requested, if the requested range
    starts from more than last segments alignment (i.e.
    ceil(object_size/segment_size) * segment_size), proxy server will return
    the original content length w/o body, though Swift should return an error
    massage as a body and the length of message as the content length.
    The current behavior will cause stuck on some client. (e.g. curl)

    This patch fixes that proxy enables to return correct response, even if such
    an over range requested.

    Co-Authored-By: Clay Gerrard <email address hidden>

    Change-Id: I21f81c842f563ac4dddc69011ed759b744bb20bd
    Closes-Bug: #1475499

Changed in swift:
status: Confirmed → Fix Committed
Revision history for this message
OpenStack Infra (hudson-openstack) wrote : Fix proposed to swift (feature/crypto)

Fix proposed to branch: feature/crypto
Review: https://review.openstack.org/219775

Revision history for this message
OpenStack Infra (hudson-openstack) wrote : Fix merged to swift (feature/crypto)
Download full text (43.3 KiB)

Reviewed: https://review.openstack.org/219775
Committed: https://git.openstack.org/cgit/openstack/swift/commit/?id=257e468e9bfd1088040419ad408106ac3c77b531
Submitter: Jenkins
Branch: feature/crypto

commit e02609c66a804845672413b06830b87395afef31
Author: Samuel Merritt <email address hidden>
Date: Tue Sep 1 15:19:50 2015 -0700

    Preserve traceback in swift-dispersion-report

    Commit c690bcb fixed a bug in the dispersion report, but changed this
    from a bare "raise" to "raise err", which loses the traceback. Not a
    big deal, but worth putting back IMO.

    Change-Id: Id5b72153a4b8df8e3faaf1fa3fb2040e28ba85cc

commit d06d4ad0fd2dfe69da8008e729651264522c6c06
Author: Minwoo Bae <email address hidden>
Date: Tue Sep 1 15:08:44 2015 -0500

    Included reference in swift.obj.diskfile to enumerate the string
    used for data file paths.

    Change-Id: Ie22caa678bc00dfc43fabec7efbbb9f34490f1b5

commit 524c89b7eeff037b8a6b421888771e15f98c2da2
Author: John Dickinson <email address hidden>
Date: Fri Aug 21 13:39:41 2015 -0700

    Updated CHANGELOG, AUTHORS, and .mailmap for 2.4.0 release.

    Change-Id: Ic6301146b839c9921bb85c4f4c1e585c9ab66661

commit 05de1305a903ee4ce9c8c50fde53c552d5b90d51
Author: Clay Gerrard <email address hidden>
Date: Thu Aug 27 18:35:09 2015 -0700

    Make ssync_sender send valid chunked requests

    The connect method of ssync_sender tells the remote connection that it's
    going to send a valid HTTP chunked request, but if the remote end needs
    to respond with an error of any kind sender throws HTTP right out the
    window, picks up his ball, and closes the socket down hard - much to the
    surprise of the eventlet.wsgi server who up to this point had been
    playing along quite nicely with this 'SSYNC' nonsense assuming that
    everyone here is consenting mature adults.

    If you're going to make a "Transfer-Encoding: chunked" request have the
    good decency to finish the job with a proper '0\r\n\r\n'. [1]

    N.B. It might be possible to handle an error status during the
    initialize_request phase with some sort of 100-continue support, but
    honestly it's not entirely clear to me when the server isn't going to
    close the connection if the client is still expected to send the body
    [2] - further if the error comes later during missing_check or updates
    we'll for sure want to send the chunk transfer termination line before
    we close down the socket and this way we cover both.

    1. Really, eventlet.wsgi shouldn't be so blasted brittle about this [3]
    2. https://lists.w3.org/Archives/Public/ietf-http-wg/2005AprJun/0007.html
    3. https://github.com/eventlet/eventlet/commit/c3ce3eef0b4d0dfdbfb1ec0186d4bb204fb8ecd5

    Closes-Bug #1489587
    Change-Id: Ic17c6c3075553f8cf6ef6213e62a00282f0d01cf

commit 993ee4e37af1961adba2047d5aa2eb210e423eb3
Author: nakagawamsa <email address hidden>
Date: Fri Aug 28 11:49:43 2015 +0900

    Remove duplicate X-Backend-Storage-Policy-Index key

    There is duplicate 'X-Backend-Storage-Policy-Index' dictionary key in unit.obj.test_server.py.
    One key has fixed policy index value, and another ha...

tags: added: in-feature-crypto
Revision history for this message
OpenStack Infra (hudson-openstack) wrote : Fix proposed to swift (feature/hummingbird)

Fix proposed to branch: feature/hummingbird
Review: https://review.openstack.org/221410

Revision history for this message
OpenStack Infra (hudson-openstack) wrote : Fix merged to swift (feature/hummingbird)
Download full text (70.7 KiB)

Reviewed: https://review.openstack.org/221410
Committed: https://git.openstack.org/cgit/openstack/swift/commit/?id=eb8f1f83f1cfc63d8452bc30096fd1c145781527
Submitter: Jenkins
Branch: feature/hummingbird

commit cb683d391cb66d0f52830de16760c80fd2afedf9
Author: OpenStack Proposal Bot <email address hidden>
Date: Sat Sep 5 06:17:51 2015 +0000

    Imported Translations from Transifex

    For more information about this automatic import see:
    https://wiki.openstack.org/wiki/Translations/Infrastructure

    Change-Id: I2d92b8e34a665fb0bb4c048cfb0c59de295dfce6

commit e4542455c8a07b7981c247df8b737816062c1655
Author: Emett Speer <email address hidden>
Date: Wed Sep 2 17:18:03 2015 -0700

    [Labs] Update links to Cloud Admin Guide

    Update links to the Cloud Admin Guide after the
    RST conversion of that book altered URLs.

    Change-Id: I899f8938498b744e62887968a65e58c00ef27f1b

commit 58fcc07523978306cd3889ada73af5d9e664cf59
Author: Christian Schwede <email address hidden>
Date: Wed Sep 2 10:52:34 2015 +0000

    Test if container_sweep is executed on unmounted devices

    This change ensures that container_sweep is not run if a device is not mounted
    and mount_check is set to True.

    Change-Id: I823083c8431d9e61fd426508033ec9188503957b

commit e02609c66a804845672413b06830b87395afef31
Author: Samuel Merritt <email address hidden>
Date: Tue Sep 1 15:19:50 2015 -0700

    Preserve traceback in swift-dispersion-report

    Commit c690bcb fixed a bug in the dispersion report, but changed this
    from a bare "raise" to "raise err", which loses the traceback. Not a
    big deal, but worth putting back IMO.

    Change-Id: Id5b72153a4b8df8e3faaf1fa3fb2040e28ba85cc

commit d06d4ad0fd2dfe69da8008e729651264522c6c06
Author: Minwoo Bae <email address hidden>
Date: Tue Sep 1 15:08:44 2015 -0500

    Included reference in swift.obj.diskfile to enumerate the string
    used for data file paths.

    Change-Id: Ie22caa678bc00dfc43fabec7efbbb9f34490f1b5

commit 615c7a204b9386e05c5bab658bfe96766ad1e680
Author: Brian Cline <email address hidden>
Date: Tue Sep 1 10:51:20 2015 -0500

    Adds useful dispersion info from changelog

    Change-Id: I1a45088fc32620b02ff9a754b02ec1eb75a59d6e

commit 3b8755098a1786c5447abf158bd686293a82977c
Author: janonymous <email address hidden>
Date: Sun Aug 2 21:29:13 2015 +0530

    Replace a / b with a // b to use integer division where needed

    Change-Id: I72c81faa62786e140b0de00e3a04934bf1b5adbd

commit 524c89b7eeff037b8a6b421888771e15f98c2da2
Author: John Dickinson <email address hidden>
Date: Fri Aug 21 13:39:41 2015 -0700

    Updated CHANGELOG, AUTHORS, and .mailmap for 2.4.0 release.

    Change-Id: Ic6301146b839c9921bb85c4f4c1e585c9ab66661

commit 05de1305a903ee4ce9c8c50fde53c552d5b90d51
Author: Clay Gerrard <email address hidden>
Date: Thu Aug 27 18:35:09 2015 -0700

    Make ssync_sender send valid chunked requests

    The connect method of ssync_sender tells the remote connection that it's
    going to send a valid HTTP chunked request, but if the remote end needs
    to respond with an error of any kind sender th...

tags: added: in-feature-hummingbird
Thierry Carrez (ttx)
Changed in swift:
milestone: none → 2.5.0
status: Fix Committed → Fix Released
Revision history for this message
OpenStack Infra (hudson-openstack) wrote : Fix included in openstack/swift 2.5.0

This issue was fixed in the openstack/swift 2.5.0 release.

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