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Debian LTS: Security Advisory for ruby-haml (DLA-2864-1)
Information
Severity
Severity
Family
Family
CVSSv2 Base
CVSSv2 Base
CVSSv2 Vector
CVSSv2 Vector
Solution Type
Solution Type
Created
Created
Modified
Modified
Summary
The remote host is missing an update for the 'ruby-haml' package(s) announced via the DLA-2864-1 advisory.
Insight
Insight
In ruby-haml, which is an elegant, structured XHTML/XML templating engine, when using user input to perform tasks on the server, characters like < > ' ' must be escaped properly. In this case, the ' character was missed. An attacker can manipulate the input to introduce additional attributes, potentially executing code.
Affected Software
Affected Software
'ruby-haml' package(s) on Debian Linux.
Detection Method
Detection Method
Checks if a vulnerable package version is present on the target host.
Solution
Solution
For Debian 9 stretch, this problem has been fixed in version 4.0.7-1+deb9u1. We recommend that you upgrade your ruby-haml packages.