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Debian LTS: Security Advisory for commons-io (DLA-2741-1)

Information

Severity

Severity

Medium

Family

Family

Debian Local Security Checks

CVSSv2 Base

CVSSv2 Base

5.0

CVSSv2 Vector

CVSSv2 Vector

AV:N/AC:L/Au:N/C:P/I:N/A:N

Solution Type

Solution Type

Vendor Patch

Created

Created

1 year ago

Modified

Modified

1 year ago

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.

Common Vulnerabilities and Exposures (CVE)