Bug 1778231 (CVE-2019-19271)

Summary: CVE-2019-19271 proftpd: A wrong iteration variable, used when checking a client certificate against CRL entries, can cause some CRL entries to be ignored
Product: [Other] Security Response Reporter: Guilherme de Almeida Suckevicz <gsuckevi>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED UPSTREAM QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: ingvar, itamar, matthias, paul
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
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Last Closed: 2019-11-29 19:04:52 UTC Type: ---
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Bug Depends On: 1778232, 1778233    
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Description Guilherme de Almeida Suckevicz 2019-11-29 14:31:47 UTC
An issue was discovered in tls_verify_crl in ProFTPD before 1.3.6. A wrong iteration variable, used when checking a client certificate against CRL entries (installed by a system administrator), can cause some CRL entries to be ignored, and can allow clients whose certificates have been revoked to proceed with a connection to the server.

Reference:
https://github.com/proftpd/proftpd/issues/860

Comment 1 Guilherme de Almeida Suckevicz 2019-11-29 14:32:45 UTC
Created proftpd tracking bugs for this issue:

Affects: epel-all [bug 1778233]
Affects: fedora-all [bug 1778232]

Comment 2 Product Security DevOps Team 2019-11-29 19:04:52 UTC
This CVE Bugzilla entry is for community support informational purposes only as it does not affect a package in a commercially supported Red Hat product. Refer to the dependent bugs for status of those individual community products.