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Title:       EGI SVG Advisory 'Moderate' RISK - VOMS Java APIs incorrect CRL checking
Date:         2013-02-19
Updated:      2013-04-17



A vulnerability has been found in the VOMS Java APIs where CRL checking is not correctly carried out. 

This has been fixed by the developers and a new version is available.

This advisory is updated as some components required a re-release in order to fully
resolve the problem. 


The developers found a problem with the VOMS Java API where the CRL is not correctly checked. 
This means that if a VOMS server were to be compromised, 
and the appropriate server added to the CRL, VOMS certificates from this 
server may still be accepted.

Although it is unlikely that a VOMs server were to be compromised, and this vulnerability is 
not exploitable by itself, serious problems would arise if a VOMS server were to be compromised 
and the CRL checking was not properly carried out. 

Hence this problem has been fixed. 

Risk category

This issue has been assessed as 'Moderate' risk by the EGI SVG Risk Assessment

Affected software

All versions of the VOMS Java API up to and including version 2.0.8.

This is fixed in VOMS version 2.0.10 as available in EMI 1 Update 23 and EMI 2 Update 8.

The package has also been released in EGI UMD-1  Release 1.10.0 

and UMD-2 Release 2.4.0

Additonally, in order to complete the elimination of this vulnerablity re-built components
have been released as part of UMD-2 release 2.4.1

Component installation information

The official repository for the distribution of grid middleware for EGI sites is which contains the EGI Unified Middleware Distribution (UMD).

Sites using the EGI UMD should see:

Sites installing directly from EMI should see:


Sites are recommended to update relevant components to the VOMS java API 2.0.9


This vulnerability was reported by Andrea Ceccanti 


2012-11-06 Vulnerability reported by Andrea Ceccanti stating that the VOMS
           team had found this problem and were fixing it
2012-11-07 Acknowledgement from the EGI SVG to the reporter
2012-11-20 Assessment by the EGI Software Vulnerability Group reported to the software providers
2013-01-28 Updated packages available in the EMI distribution
2013-02-19 Updated packages available in the EGI UMD distributions
2013-02-19 Public disclosure
2013-02-19 Removed from public web page as some components required re-build to fully
2013-04-05 UMD 2.4.1 release made available which fully resolves the problem
2013-04-17 Public disclosure