Bug 1671380 (CVE-2018-19838) - CVE-2018-19838 libsass: Stack consumption in ast.cpp resulting in a denial of service
Summary: CVE-2018-19838 libsass: Stack consumption in ast.cpp resulting in a denial of...
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2018-19838
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:
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Depends On: 1671396 1671395 1679600
Blocks: 1671393
TreeView+ depends on / blocked
 
Reported: 2019-01-31 14:04 UTC by Andrej Nemec
Modified: 2021-10-27 03:23 UTC (History)
2 users (show)

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Last Closed: 2021-10-27 03:23:20 UTC
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Description Andrej Nemec 2019-01-31 14:04:28 UTC 
In LibSass prior to 3.5.5, functions inside ast.cpp for IMPLEMENT_AST_OPERATORS expansion allow attackers to cause a denial-of-service resulting from stack consumption via a crafted sass file, as demonstrated by recursive calls involving clone(), cloneChildren(), and copy().

Upstream issue:

https://github.com/sass/libsass/issues/2660
Comment 1 Andrej Nemec 2019-01-31 14:16:24 UTC 
Created libsass tracking bugs for this issue:

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