Hi,

We have 2 DSpace repositories – our main IR, which is DSpace v6.2, and a Data 
repository, which is DSpace v5.2 (yes, I know, both well out of support and 
neither is the latest version on their respective branches!) – both using the 
JSP UI – both are (very) heavily customised, which makes upgrades hard (so 
can’t just pop on the latest v6 or v5 releases) . . .

A colleague from our infrastructure team has contacted me as their 
vulnerability scanning software has identified issues with SOLR (on both 
systems), and he has asked me if it possible to upgrade SOLR on those servers 
to (hopefully!) eradicate the identified vulnerabilities.

This is the list he sent me:

Apache Solr: CVE-2017-3164: SSRF issue in Apache Solr
Apache Solr: CVE-2019-0193: Apache Solr, Remote Code Execution via 
DataImportHandler
Apache Solr: CVE-2019-12401: XML Bomb in Apache Solr versions prior to 5.0
Apache Solr: CVE-2020-13941: Apache Solr information disclosure vulnerability
Apache Solr: CVE-2021-27905: SSRF vulnerability with the Replication handler
Apache Solr: CVE-2021-29262: Misapplied Zookeeper ACLs can result in leakage of 
configured authentication and authorization settings
Apache Solr: CVE-2021-29943: Apache Solr Unprivileged users may be able to 
perform unauthorized read/write to collections

Does anyone know if DSpace v6.2 and/or v5.2 are vulnerable to any of these, or 
know where I can look to find out – I tried searching the DSpace 
documentation/release notes/mailing list but didn’t find any mention of any of 
these, but I could just not be looking in the right place! (or maybe that means 
DSpace is not vulnerable?) . . .

And, if any of these vulnerabilities are exploitable in either version v6.2 or 
v5.2, does anyone know any way to resolve the issues in a “light touch” way 
(i.e. without doing a full upgrade) – e.g. “just” change the version number(s) 
in the (SOLR) POM, or apply this or that patch/diff (to update bits of DSpace 
that are affected) . . . ?

Of course, the upgrade to v7 (or even v8!) is still on my to do list, but it’s 
still a way down the road due to other priorities, so I need to patch/fudge my 
way round this for the time being (assuming any of these are an issue of 
course!) . . .

Any information, pointers, or suggestions that anyone may have would be very 
welcome.

Cheers,

Mike

Michael White
Senior Developer
Product Development
Information Services
University of Stirling
Stirling
FK9 4LA

Tel: +44 (0) 1786 466877
Email: michael.wh...@stir.ac.uk<mailto:michael.wh...@stir.ac.uk>
Web: Information 
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