Vulnerability identifier: #VU16232
Vulnerability risk: Low
CVSSv3.1: 4.8 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-121
Exploitation vector: Network
Exploit availability: No
Vulnerable software:
LibSass
Universal components / Libraries /
Libraries used by multiple products
Vendor: Sass
Description
The vulnerability allows a remote attacker to cause DoS condition.
The vulnerability exists due to stack-based buffer overflow in Sass::Eval::operator()(Sass::Binary_Expression*) inside eval.cpp when incorrect parsing of '%' as a modulo operator in parser.cpp. A remote attacker can send a specially crafted sass file, trigger memory corruption and cause the service to crash.
Mitigation
Update to version 3.5.5.
Vulnerable software versions
LibSass: 3.4.0 - 3.5.4
External links
http://github.com/sass/libsass/issues/2659
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.