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Debian LTS: Security Advisory for log4net (DLA-2211-1)
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 'log4net' package(s) announced via the DLA-2211-1 advisory.
Insight
Insight
It was discovered that there was an XML external entity vulnerability in log4net, a logging API for the ECMA Common Language Infrastructure (CLI), sometimes referred to as 'Mono'. This type of attack occurs when XML input containing a reference to an internet-faced entity is processed by a weakly configured XML parser. This attack may lead to the disclosure of confidential data, denial of service, server side request forgery as well as other system impacts.
Affected Software
Affected Software
'log4net' 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 8 'Jessie', this issue has been fixed in log4net version 1.2.10+dfsg-6+deb8u1. We recommend that you upgrade your log4net packages.