Description

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().

Remediation

References

http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00047.html

http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00051.html

http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00027.html

https://github.com/sass/libsass/issues/2660

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Severity

High

Classification

CWE-400 CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Tags

Exploit Third Party Advisory