Ecosyste.ms: Advisories

Security Advisories: MDE2OlNlY3VyaXR5QWR2aXNvcnlHSFNBLXZxcXYtdjltMi00OHAy

Bootstrap-sass contains code execution backdoor

Arbitrary code execution (via backdoor code) was discovered in bootstrap-sass 3.2.0.3, when downloaded from rubygems.org. An unauthenticated attacker can craft the ___cfduid cookie value with base64 arbitrary code to be executed via eval(), which can be leveraged to execute arbitrary code on the target system. Note that there are three underscore characters in the cookie name. This is unrelated to the __cfduid cookie that is legitimately used by Cloudflare.

Permalink: https://github.com/advisories/GHSA-vqqv-v9m2-48p2
JSON: https://advisories.ecosyste.ms/api/v1/advisories/MDE2OlNlY3VyaXR5QWR2aXNvcnlHSFNBLXZxcXYtdjltMi00OHAy
Source: GitHub Advisory Database
Origin: Unspecified
Severity: Critical
Classification: General
Published: over 5 years ago
Updated: over 1 year ago

CVSS Score: 9.8
CVSS vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Percentage: 0.44028
EPSS Percentile: 0.97432

Identifiers: GHSA-vqqv-v9m2-48p2, CVE-2019-10842
References:

• https://nvd.nist.gov/vuln/detail/CVE-2019-10842
• https://github.com/twbs/bootstrap-sass/issues/1195
• https://snyk.io/blog/malicious-remote-code-execution-backdoor-discovered-in-the-popular-bootstrap-sass-ruby-gem/
• https://snyk.io/vuln/SNYK-RUBY-BOOTSTRAPSASS-174093
• https://github.com/rubysec/ruby-advisory-db/blob/master/gems/bootstrap-sass/CVE-2019-10842.yml
• https://github.com/advisories/GHSA-vqqv-v9m2-48p2

Repository: https://github.com/twbs/bootstrap-sass
Blast Radius: 50.9

Affected Packages