CVE Vulnerability

CVE-2019-10842

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.

10 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 10 / Impact : 10

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact COMPLETE

Integrity Impact COMPLETE

Availability Impact COMPLETE

Scope

9.8 /10

CVSS v3.0 : CRITICAL

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://snyk.io/vuln/SNYK-RUBY-BOOTSTRAPSASS-174093 Exploit Third Party Advisory
https://snyk.io/blog/malicious-remote-code-execution-backdoor-discovered-in-the-popular-bootstrap-sass-ruby-gem/ Exploit Third Party Advisory
https://github.com/twbs/bootstrap-sass/issues/1195 Issue Tracking Third Party Advisory
http://dgb.github.io/2019/04/05/bootstrap-sass-backdoor.html Third Party Advisory
Configurations

Configuration 1

cpe:2.3:a:getbootstrap:bootstrap-sass:3.2.0.3:*:*:*:*:ruby:*:*
Information

Published : 2019-04-04 04:29

Updated : 2019-04-11 06:39

NVD link : CVE-2019-10842

Mitre link : CVE-2019-10842

Products Affected
No products.
CWE
CWE-94