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:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	jadahl, negativo17, rdieter
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
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:

https://github.com/LibVNC/libvncserver/issues/253

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):

https://access.redhat.com/security/cve/cve-2018-21247

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