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Debian LTS: Security Advisory for commons-io (DLA-2741-1)
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 'commons-io' package(s) announced via the DLA-2741-1 advisory.
Insight
Insight
Lukas Euler discovered a path traversal vulnerability in commons-io, a Java library for common useful IO related classes. When invoking the method FileNameUtils.normalize with an improper input string, like '//../foo', or '\\..\foo', the result would be the same value, thus possibly providing access to files in the parent directory, but not further above (thus 'limited' path traversal), if the calling code would use the result to construct a path value.
Affected Software
Affected Software
'commons-io' 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 2.5-1+deb9u1. We recommend that you upgrade your commons-io packages.