Bug 1671386 (CVE-2018-19839) - CVE-2018-19839 libsass: Heap-based buffer over-read in the handle_error function resulting in a denial of service
Summary: CVE-2018-19839 libsass: Heap-based buffer over-read in the handle_error funct...
Keywords:
Status: CLOSED NOTABUG
Alias: CVE-2018-19839
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1671396 1671395
Blocks: 1671393
TreeView+ depends on / blocked
 
Reported: 2019-01-31 14:07 UTC by Andrej Nemec
Modified: 2019-09-29 15:07 UTC (History)
2 users (show)

Fixed In Version:
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Last Closed: 2019-06-10 10:47:06 UTC
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Description Andrej Nemec 2019-01-31 14:07:26 UTC 
In LibSass prior to 3.5.5, the function handle_error in sass_context.cpp allows attackers to cause a denial-of-service resulting from a heap-based buffer over-read via a crafted sass file.

Upstream issue:

https://github.com/sass/libsass/issues/2657

Upstream patch:

https://github.com/sass/libsass/pull/2767/commits/a2dff1b59ea8c8ec10680f9e8e5593e4b38554a1

Upstream pull request:

https://github.com/sass/libsass/pull/2767
Comment 1 Andrej Nemec 2019-01-31 14:16:35 UTC 
Created libsass tracking bugs for this issue:

Affects: epel-7 [bug 1671396]
Affects: fedora-all [bug 1671395]
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