#VU38455 Out-of-bounds read in LibSass - CVE-2017-12963
Published: August 18, 2017 / Updated: August 8, 2020
Vulnerability identifier: #VU38455
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2017-12963
CWE-ID: CWE-125
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
LibSass
LibSass
Software vendor:
Sass
Sass
Description
The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.
There is an illegal address access in Sass::Eval::operator() in eval.cpp of LibSass 3.4.5, leading to a remote denial of service attack. NOTE: this is similar to CVE-2017-11555 but remains exploitable after the vendor's CVE-2017-11555 fix (available from GitHub after 2017-07-24).
Remediation
Install update from vendor's website.