Bug 1849886 (CVE-2018-21247)

Summary: CVE-2018-21247 libvncserver: uninitialized memory contents are vulnerable to Information Leak
Product: [Other] Security Response Reporter: Marian Rehak <mrehak>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED ERRATA QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: jadahl, negativo17, rdieter
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Fixed In Version: Doc Type: If docs needed, set a value
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2021-05-18 14:34:30 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Bug Depends On: 1849887, 1849888, Engineering1852516, Engineering1852517    
Bug Blocks: Embargoed1849880    

Description Marian Rehak 2020-06-23 06:32:59 UTC
An issue was discovered in LibVNCServer before 0.9.13. There is an information leak (of uninitialized memory contents) in the libvncclient/rfbproto.c ConnectToRFBRepeater function.

Upstream Issue:


Comment 1 Marian Rehak 2020-06-23 06:33:22 UTC
Created libvncserver tracking bugs for this issue:

Affects: epel-7 [bug 1849888]
Affects: fedora-all [bug 1849887]

Comment 4 Product Security DevOps Team 2021-05-18 14:34:30 UTC
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):


Comment 5 errata-xmlrpc 2021-05-18 15:16:11 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2021:1811 https://access.redhat.com/errata/RHSA-2021:1811