Bug 1706031 (CVE-2018-20822) - CVE-2018-20822 libsass: DoS in Sass::Complex_Selector::perform in ast.hpp and Sass::Inspect::operator in inspect.cpp
Summary: CVE-2018-20822 libsass: DoS in Sass::Complex_Selector::perform in ast.hpp and...
Keywords:
Status: CLOSED NOTABUG
Alias: CVE-2018-20822
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: 1706052 1706051
Blocks: 1706049
TreeView+ depends on / blocked
 
Reported: 2019-05-03 12:18 UTC by Dhananjay Arunesh
Modified: 2021-02-16 21:59 UTC (History)
2 users (show)

Fixed In Version:
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Last Closed: 2019-05-15 09:52:36 UTC
Embargoed:

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Description Dhananjay Arunesh 2019-05-03 12:18:00 UTC 
LibSass 3.5.4 allows attackers to cause a denial-of-service (uncontrolled recursion in Sass::Complex_Selector::perform in ast.hpp and Sass::Inspect::operator in inspect.cpp).

Reference:
https://github.com/sass/libsass/issues/2671
Comment 1 Dhananjay Arunesh 2019-05-03 12:42:27 UTC 
Created libsass tracking bugs for this issue:

Affects: fedora-all [bug 1706051]
Comment 2 Dhananjay Arunesh 2019-05-03 12:43:01 UTC 
Created libsass tracking bugs for this issue:

Affects: epel-7 [bug 1706052]
Comment 3 Riccardo Schirone 2019-05-15 09:51:36 UTC 
First vulnerable commit:
https://github.com/sass/libsass/commit/25c9b4952f5838b615da996035453967d0420f57
Comment 4 Riccardo Schirone 2019-05-15 09:52:39 UTC 
Statement:

This issue did not affect the versions of libsass as shipped with Red Hat Enterprise Linux 8 as the flaw was introduced in a newer version of the library.
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