CVE-2013-1855

Description

The sanitize_css method in lib/action_controller/vendor/html-scanner/html/sanitizer.rb in the Action Pack component in Ruby on Rails before 2.3.18, 3.0.x and 3.1.x before 3.1.12, and 3.2.x before 3.2.13 does not properly handle \n (newline) characters, which makes it easier for remote attackers to conduct cross-site scripting (XSS) attacks via crafted Cascading Style Sheets (CSS) token sequences.

Category

4.3
CVSS
Severity: Medium
CVSS 2.0 •
EPSS 0.54%
Vendor Advisory apple.com Vendor Advisory opensuse.org Vendor Advisory opensuse.org Vendor Advisory redhat.com Vendor Advisory apple.com Vendor Advisory opensuse.org Vendor Advisory redhat.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://lists.apple.com/archives/security-announce/2013/Oct/msg00006.html vendor advisory
https://groups.google.com/group/rubyonrails-security/msg/8ed835a97cdd1afd?dmode=source&output=gplain mailing list
http://lists.opensuse.org/opensuse-updates/2014-01/msg00013.html vendor advisory
http://lists.opensuse.org/opensuse-updates/2013-04/msg00073.html vendor advisory
http://support.apple.com/kb/HT5784
http://rhn.redhat.com/errata/RHSA-2013-0698.html vendor advisory
http://lists.apple.com/archives/security-announce/2013/Jun/msg00000.html vendor advisory
http://lists.opensuse.org/opensuse-updates/2013-04/msg00072.html vendor advisory
http://rhn.redhat.com/errata/RHSA-2014-1863.html vendor advisory
http://weblog.rubyonrails.org/2013/3/18/SEC-ANN-Rails-3-2-13-3-1-12-and-2-3-18-have-been-released/

Frequently Asked Questions

What is the severity of CVE-2013-1855?
CVE-2013-1855 has been scored as a medium severity vulnerability.
How to fix CVE-2013-1855?
To fix CVE-2013-1855, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2013-1855 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2013-1855 is being actively exploited. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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