CVE-2019-10842
Cloudflare Rubygem Bootstrap Sass Code Execution
Description
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.
INFO
Published Date :
April 4, 2019, 4:29 a.m.
Last Modified :
Nov. 21, 2024, 4:19 a.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
5.9
Exploitability Score :
3.9
Public PoC/Exploit Available at Github
CVE-2019-10842 has a 1 public PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2019-10842.
| URL | Resource |
|---|---|
| http://dgb.github.io/2019/04/05/bootstrap-sass-backdoor.html | Third Party Advisory |
| https://github.com/twbs/bootstrap-sass/issues/1195 | Issue Tracking 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://snyk.io/vuln/SNYK-RUBY-BOOTSTRAPSASS-174093 | Exploit Third Party Advisory |
| http://dgb.github.io/2019/04/05/bootstrap-sass-backdoor.html | Third Party Advisory |
| https://github.com/twbs/bootstrap-sass/issues/1195 | Issue Tracking 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://snyk.io/vuln/SNYK-RUBY-BOOTSTRAPSASS-174093 | Exploit Third Party Advisory |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Simple HTTP API for quering cvelist data
Dockerfile Python
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2019-10842 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2019-10842 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Nov. 21, 2024
Action Type Old Value New Value Added Reference http://dgb.github.io/2019/04/05/bootstrap-sass-backdoor.html Added Reference https://github.com/twbs/bootstrap-sass/issues/1195 Added Reference https://snyk.io/blog/malicious-remote-code-execution-backdoor-discovered-in-the-popular-bootstrap-sass-ruby-gem/ Added Reference https://snyk.io/vuln/SNYK-RUBY-BOOTSTRAPSASS-174093 -
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
Initial Analysis by [email protected]
Apr. 11, 2019
Action Type Old Value New Value Added CVSS V2 (AV:N/AC:L/Au:N/C:C/I:C/A:C) Added CVSS V3 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Changed Reference Type http://dgb.github.io/2019/04/05/bootstrap-sass-backdoor.html No Types Assigned http://dgb.github.io/2019/04/05/bootstrap-sass-backdoor.html Third Party Advisory Changed Reference Type https://snyk.io/blog/malicious-remote-code-execution-backdoor-discovered-in-the-popular-bootstrap-sass-ruby-gem/ No Types Assigned https://snyk.io/blog/malicious-remote-code-execution-backdoor-discovered-in-the-popular-bootstrap-sass-ruby-gem/ Exploit, Third Party Advisory Changed Reference Type https://snyk.io/vuln/SNYK-RUBY-BOOTSTRAPSASS-174093 No Types Assigned https://snyk.io/vuln/SNYK-RUBY-BOOTSTRAPSASS-174093 Exploit, Third Party Advisory Changed Reference Type https://github.com/twbs/bootstrap-sass/issues/1195 No Types Assigned https://github.com/twbs/bootstrap-sass/issues/1195 Issue Tracking, Third Party Advisory Added CWE CWE-94 Added CPE Configuration OR *cpe:2.3:a:getbootstrap:bootstrap-sass:3.2.0.3:*:*:*:*:ruby:*:* -
CVE Modified by [email protected]
Apr. 09, 2019
Action Type Old Value New Value Added Reference http://dgb.github.io/2019/04/05/bootstrap-sass-backdoor.html [No Types Assigned]
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2019-10842 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2019-10842
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
34.50 }} -9.52%
score
0.97114
percentile