4.3 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:N/AC:M/Au:N/C:N/I:P/A:N
5.5 Medium
AI Score
Confidence
High
0.004 Low
EPSS
Percentile
73.9%
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.
lists.apple.com/archives/security-announce/2013/Jun/msg00000.html
lists.apple.com/archives/security-announce/2013/Oct/msg00006.html
lists.opensuse.org/opensuse-updates/2013-04/msg00072.html
lists.opensuse.org/opensuse-updates/2013-04/msg00073.html
lists.opensuse.org/opensuse-updates/2014-01/msg00013.html
rhn.redhat.com/errata/RHSA-2013-0698.html
rhn.redhat.com/errata/RHSA-2014-1863.html
support.apple.com/kb/HT5784
weblog.rubyonrails.org/2013/3/18/SEC-ANN-Rails-3-2-13-3-1-12-and-2-3-18-have-been-released/
groups.google.com/group/rubyonrails-security/msg/8ed835a97cdd1afd?dmode=source&output=gplain