Bug 1898732 (CVE-2020-16012) - CVE-2020-16012 Mozilla: Variable time processing of cross-origin images during drawImage calls
Summary: CVE-2020-16012 Mozilla: Variable time processing of cross-origin images durin...
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2020-16012
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1895993 1895994 1895995 1895996 1895997 1895998 1895999 1898749 1898750 1898751 1898752 1898753 1898754 1898755 1899246 1899247 1899248
Blocks: 1895990
TreeView+ depends on / blocked
 
Reported: 2020-11-18 00:42 UTC by Doran Moppert
Modified: 2021-02-26 09:42 UTC (History)
8 users (show)

Fixed In Version: firefox 78.5, thunderbird 78.5, chromium-browser 87.0.4280.66
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Environment:
Last Closed: 2020-11-30 11:33:59 UTC


Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2020:5231 0 None None None 2020-11-30 08:40:01 UTC
Red Hat Product Errata RHSA-2020:5232 0 None None None 2020-11-30 08:53:17 UTC
Red Hat Product Errata RHSA-2020:5233 0 None None None 2020-11-30 08:46:31 UTC
Red Hat Product Errata RHSA-2020:5234 0 None None None 2020-11-30 08:57:50 UTC
Red Hat Product Errata RHSA-2020:5235 0 None None None 2020-11-30 18:25:18 UTC
Red Hat Product Errata RHSA-2020:5236 0 None None None 2020-11-30 08:49:25 UTC
Red Hat Product Errata RHSA-2020:5237 0 None None None 2020-11-30 10:38:34 UTC
Red Hat Product Errata RHSA-2020:5238 0 None None None 2020-11-30 08:58:32 UTC
Red Hat Product Errata RHSA-2020:5239 0 None None None 2020-11-30 23:05:17 UTC
Red Hat Product Errata RHSA-2020:5240 0 None None None 2020-11-30 08:35:25 UTC
Red Hat Product Errata RHSA-2020:5257 0 None None None 2020-11-30 19:42:40 UTC
Red Hat Product Errata RHSA-2020:5314 0 None None None 2020-12-01 15:24:35 UTC

Description Doran Moppert 2020-11-18 00:42:43 UTC
When drawing a transparent image on top of an unknown cross-origin image, the Skia library `drawImage` function took a variable amount of time depending on the content of the underlying image. This resulted in potential cross-origin information exposure of image content through timing side-channel attacks.



External Reference:

https://www.mozilla.org/en-US/security/advisories/mfsa2020-51/#CVE-2020-16012

Comment 1 Doran Moppert 2020-11-18 00:42:47 UTC
Acknowledgments:

Name: the Mozilla project
Upstream: Aleksejs Popovs

Comment 6 Tomas Hoger 2020-11-20 21:40:53 UTC
Mozilla advisory links the following (currently non-public) bug as Mozilla upstream bug for this issue:

https://bugzilla.mozilla.org/show_bug.cgi?id=1642028

Using its bug id, it is possible to locate this commit fixing this issue:

https://hg.mozilla.org/mozilla-central/rev/48c0f5033c286bd515b6f16e0905ff4ca94faf98

This flaw affects the Skia library bundled with Firefox and Thunderbird.  Skia upstream commit for this issue is:

https://skia.googlesource.com/skia/+/5d3314c53ce5c966591f0b02349103f51f986e6e%5E%21/

The Skia library is also bundled with Google Chrome / Chromium browser and this issue was corrected there in version 87.0.4280.66:

https://chromereleases.googleblog.com/2020/11/stable-channel-update-for-desktop_17.html

The Chrome / Chromium bug (also currently non-public) is:

https://bugs.chromium.org/p/chromium/issues/detail?id=1088224

This bug Chromium bug id is referenced from the Skia commit.

Comment 13 errata-xmlrpc 2020-11-30 08:35:23 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.0 Update Services for SAP Solutions

Via RHSA-2020:5240 https://access.redhat.com/errata/RHSA-2020:5240

Comment 14 errata-xmlrpc 2020-11-30 08:39:57 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.1 Extended Update Support

Via RHSA-2020:5231 https://access.redhat.com/errata/RHSA-2020:5231

Comment 15 errata-xmlrpc 2020-11-30 08:46:53 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.1 Extended Update Support

Via RHSA-2020:5233 https://access.redhat.com/errata/RHSA-2020:5233

Comment 16 errata-xmlrpc 2020-11-30 08:49:23 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2020:5236 https://access.redhat.com/errata/RHSA-2020:5236

Comment 17 errata-xmlrpc 2020-11-30 08:53:15 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.2 Extended Update Support

Via RHSA-2020:5232 https://access.redhat.com/errata/RHSA-2020:5232

Comment 18 errata-xmlrpc 2020-11-30 08:57:49 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.2 Extended Update Support

Via RHSA-2020:5234 https://access.redhat.com/errata/RHSA-2020:5234

Comment 19 errata-xmlrpc 2020-11-30 08:58:30 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 6

Via RHSA-2020:5238 https://access.redhat.com/errata/RHSA-2020:5238

Comment 20 errata-xmlrpc 2020-11-30 10:38:32 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2020:5237 https://access.redhat.com/errata/RHSA-2020:5237

Comment 21 Product Security DevOps Team 2020-11-30 11:33:59 UTC
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2020-16012

Comment 22 errata-xmlrpc 2020-11-30 18:25:17 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2020:5235 https://access.redhat.com/errata/RHSA-2020:5235

Comment 23 errata-xmlrpc 2020-11-30 19:42:39 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 6

Via RHSA-2020:5257 https://access.redhat.com/errata/RHSA-2020:5257

Comment 24 errata-xmlrpc 2020-11-30 23:05:16 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2020:5239 https://access.redhat.com/errata/RHSA-2020:5239

Comment 25 errata-xmlrpc 2020-12-01 15:24:33 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.0 Update Services for SAP Solutions

Via RHSA-2020:5314 https://access.redhat.com/errata/RHSA-2020:5314


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