Bug 1778231 (CVE-2019-19271) - 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
Summary: CVE-2019-19271 proftpd: A wrong iteration variable, used when checking a clie...
Keywords:
Status: CLOSED UPSTREAM
Alias: CVE-2019-19271
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
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Depends On: 1778232 1778233
Blocks:
TreeView+ depends on / blocked
 
Reported: 2019-11-29 14:31 UTC by Guilherme de Almeida Suckevicz
Modified: 2019-11-29 19:04 UTC (History)
4 users (show)

Fixed In Version:
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Last Closed: 2019-11-29 19:04:52 UTC
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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by a system administrator), can cause some CRL entries to be ignored, and can allow clients whose certificates have been revoked to proceed with a connection to the server.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.
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