Bug 1658400 (CVE-2018-18493) - CVE-2018-18493 Mozilla: Buffer overflow in accelerated 2D canvas with Skia
Summary: CVE-2018-18493 Mozilla: Buffer overflow in accelerated 2D canvas with Skia
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2018-18493
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1655360 1655361 1655362 1660726 1660727 1660728 1661346 1667787
Blocks: 1655358 1660724
TreeView+ depends on / blocked
 
Reported: 2018-12-11 23:58 UTC by Doran Moppert
Modified: 2021-02-26 04:22 UTC (History)
5 users (show)

Fixed In Version:
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Clone Of:
Environment:
Last Closed: 2019-01-29 16:11:23 UTC
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2018:3831 0 None None None 2018-12-17 17:06:43 UTC
Red Hat Product Errata RHSA-2018:3833 0 None None None 2018-12-17 17:06:53 UTC
Red Hat Product Errata RHSA-2019:0159 0 None None None 2019-01-24 22:38:15 UTC
Red Hat Product Errata RHSA-2019:0160 0 None None None 2019-01-24 22:42:18 UTC

Description Doran Moppert 2018-12-11 23:58:44 UTC 
A buffer overflow can occur in the Skia library during buffer offset calculations with hardware accelerated canvas 2D actions due to the use of 32-bit calculations instead of 64-bit. This results in a potentially exploitable crash.



External Reference:

https://www.mozilla.org/en-US/security/advisories/mfsa2018-30/#CVE-2018-18493
Comment 1 Doran Moppert 2018-12-11 23:58:47 UTC 
Acknowledgments:

Name: the Mozilla project
Upstream: Atte Kettunen
Comment 2 errata-xmlrpc 2018-12-17 17:06:43 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 6

Via RHSA-2018:3831 https://access.redhat.com/errata/RHSA-2018:3831
Comment 3 errata-xmlrpc 2018-12-17 17:06:52 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2018:3833 https://access.redhat.com/errata/RHSA-2018:3833
Comment 4 Doran Moppert 2019-01-21 04:57:31 UTC 
Statement:

In general, this flaw be exploited through email in the Thunderbird product because scripting is disabled when reading mail, but are potentially risks in browser or browser-like contexts.
Comment 6 errata-xmlrpc 2019-01-24 22:38:14 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 6

Via RHSA-2019:0159 https://access.redhat.com/errata/RHSA-2019:0159
Comment 7 errata-xmlrpc 2019-01-24 22:42:17 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2019:0160 https://access.redhat.com/errata/RHSA-2019:0160
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