PT-2017-12100 · Sass · Libsass

Published 2017-07-23 · Updated 2019-10-03 · CVE-2017-11556

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions LibSass version 3.4.5

Description A stack consumption issue exists in the Parser::advanceToNextToken function in parser.cpp. This can be triggered by a crafted input, potentially leading to a remote denial of service.

Recommendations For LibSass version 3.4.5, as a temporary workaround, consider restricting the use of the Parser::advanceToNextToken function until a patch is available. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Uncontrolled Recursion

Weakness Enumeration

CWE-674

Related Identifiers

CVE-2017-11556

Affected Products

Libsass

References · 9

• 🔥 https://bugzilla.redhat.com/show_bug.cgi?id=1471786 · Exploit
• https://osv.dev/vulnerability/DEBIAN-CVE-2017-11556 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2017-11556 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2017-11556 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2017-11556 · Vendor Advisory
• https://ubuntu.com/security/CVE-2017-11556 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2017-11556 · Security Note
• https://osv.dev/vulnerability/CVE-2017-11556 · Vendor Advisory
• https://github.com/sass/libsass/issues/2447 · Note