Uncontrolled Recursion in LibSass - CVE-2019-18797
Published: November 6, 2019 / Updated: July 17, 2020
Vulnerability identifier: #VU30654
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2019-18797
CWE-ID: CWE-674
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.
LibSass 3.6.1 has uncontrolled recursion in Sass::Eval::operator()(Sass::Binary_Expression*) in eval.cpp.
Affected software
LibSass
IBM Watson Machine Learning Accelerator
IBM Watson Machine Learning on CP4D
IBM Watson Machine Learning Accelerator
IBM Watson Machine Learning on CP4D
How to mitigate CVE-2019-18797
Install update from vendor's website.
LibSass - update to 3.6.1
IBM Watson Machine Learning on CP4D - update to 2.6.0
IBM Watson Machine Learning on CP4D - update to 2.6.0