Tim Allison commented on TIKA-3019:
Got it. That was my understanding as well. If we remove log4jx 1x and swap in log4j 2, will it be a breaking change for tika-app or tika-server users who might have custom log4j 1.x config files to either:
a) add log4j 1.x to their classpath – will this work?!
b) convert their logging config files to log4j 2?
[~grossws], any recommendations?
> [9.8] [CVE-2019-17571] [tika-app] [1.23]
> Key: TIKA-3019
> URL: https://issues.apache.org/jira/browse/TIKA-3019 > Project: Tika
> Issue Type: Bug
> Components: tika-batch
> Affects Versions: 1.23
> Reporter: Aman Mishra
> Priority: Major
> *Description :*
> *Severity :* Sonatype CVSS 3: 9.8CVE CVSS 2.0: 0.0
> *Weakness :* Sonatype CWE: 502
> *Source :* National Vulnerability Database
> *Categories :* Data
> *Description from CVE :* Included in Log4j 1.2 is a SocketServer class that is vulnerable to deserialization of untrusted data which can be exploited to remotely execute arbitrary code when combined with a deserialization gadget when listening to untrusted network traffic for log data. This affects Log4j versions up to 1.2 up to 1.2.17.
> *Explanation :* The log4j:log4j package is vulnerable to Remote Code Execution [RCE] due to Deserialization of Untrusted Data. The configureHierarchy and genericHierarchy methods in SocketServer.class do not verify if the file at a given file path contains any untrusted objects prior to deserializing them. A remote attacker can exploit this vulnerability by providing a path to crafted files, which result in arbitrary code execution when deserialized.
> NOTE: Starting with version[s] 2.x, log4j:log4j was relocated to org.apache.logging.log4j:log4j-core. A variation of this vulnerability exists in org.apache.logging.log4j:log4j-core as CVE-2017-5645, in versions up to but excluding 2.8.2.
> *Detection :* The application is vulnerable by using this component.
> *Recommendation :* Starting with version[s] 2.x, log4j:log4j was relocated to org.apache.logging.log4j:log4j-core. A variation of this vulnerability exists in org.apache.logging.log4j:log4j-core as CVE-2017-5645, in versions up to but excluding 2.8.2. Therefore,it is recommended to upgrade to org.apache.logging.log4j:log4j-core version[s] 2.8.2 and above. For log4j:log4j 1.x versions however, a fix does not exist.
> *Root Cause :* tika-app-1.23.jarorg/apache/log4j/net/SocketServer.class : [,]
> *Advisories :* Project: [https://bugzilla.redhat.com/show_bug.cgi?id=1785616]
> *CVSS Details :* Sonatype CVSS 3: 9.8CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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