Bug 1123828 (CVE-2018-20749)

Summary:	VUL-0: CVE-2018-20749: LibVNCServer: heap out-of-bounds write vulnerability in libvncserver/rfbserver.c
Product:	[Novell Products] SUSE Security Incidents	Reporter:	Alexandros Toptsoglou <atoptsoglou>
Component:	Incidents	Assignee:	Security Team bot <security-team>
Status:	RESOLVED FIXED	QA Contact:	Security Team bot <security-team>
Severity:	Critical
Priority:	P3 - Medium	CC:	meissner, smash_bz
Version:	unspecified
Target Milestone:	---
Hardware:	Other
OS:	Other
URL:	https://smash.suse.de/issue/223983/
Whiteboard:	CVSSv3:SUSE:CVE-2018-20749:9.8:(AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H) CVSSv2:NVD:CVE-2018-20749:7.5:(AV:N/AC:L/Au:N/C:P/I:P/A:P) CVSSv3:NVD:CVE-2018-20749:9.8:(AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H) CVSSv3:RedHat:CVE-2018-15127:7.5:(AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H) CVSSv3:RedHat:CVE-2018-20749:7.5:(AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H)
Found By:	Security Response Team	Services Priority:
Business Priority:		Blocker:	---
Marketing QA Status:	---	IT Deployment:	---

Description Alexandros Toptsoglou 2019-01-31 10:45:21 UTC

CVE-2018-20749

LibVNC before 0.9.12 contains a heap out-of-bounds write vulnerability in
libvncserver/rfbserver.c. The fix for CVE-2018-15127 was incomplete.

References:
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2018-20749
https://www.openwall.com/lists/oss-security/2018/12/10/8
http://people.canonical.com/~ubuntu-security/cve/2018/CVE-2018-20749.html
https://github.com/LibVNC/libvncserver/issues/273
https://github.com/LibVNC/libvncserver/commit/15bb719c03cc70f14c36a843dcb16ed69b405707

Comment 1 Alexandros Toptsoglou 2019-01-31 10:51:55 UTC

The patch for CVE-2018-15127 did not fix completely that issue and thus this CVE was created. A fix is already available at [1] 

All our codestreams contain this patch and are also affected. 




[1] https://github.com/LibVNC/libvncserver/commit/15bb719c03cc70f14c36a843dcb16ed69b405707

Comment 2 Petr Gajdos 2019-02-05 13:03:12 UTC

0.9.12 submitted into develproject.

Comment 3 Petr Gajdos 2019-02-05 14:17:47 UTC

Packages submitted into 15,12,11/LibVNCServer.

Comment 4 Petr Gajdos 2019-02-05 14:18:44 UTC

I believe all fixed.

Comment 6 Swamp Workflow Management 2019-02-07 17:13:02 UTC

SUSE-SU-2019:0283-1: An update that fixes three vulnerabilities is now available.

Category: security (critical)
Bug References: 1123823,1123828,1123832
CVE References: CVE-2018-20748,CVE-2018-20749,CVE-2018-20750
Sources used:
SUSE Linux Enterprise Workstation Extension 15 (src):    LibVNCServer-0.9.10-4.6.1
SUSE Linux Enterprise Module for Packagehub Subpackages 15 (src):    LibVNCServer-0.9.10-4.6.1
SUSE Linux Enterprise Module for Open Buildservice Development Tools 15 (src):    LibVNCServer-0.9.10-4.6.1

Comment 7 Swamp Workflow Management 2019-02-09 14:08:49 UTC

SUSE-SU-2019:0313-1: An update that fixes three vulnerabilities is now available.

Category: security (critical)
Bug References: 1123823,1123828,1123832
CVE References: CVE-2018-20748,CVE-2018-20749,CVE-2018-20750
Sources used:
SUSE OpenStack Cloud 7 (src):    LibVNCServer-0.9.9-17.11.1
SUSE Linux Enterprise Software Development Kit 12-SP4 (src):    LibVNCServer-0.9.9-17.11.1
SUSE Linux Enterprise Software Development Kit 12-SP3 (src):    LibVNCServer-0.9.9-17.11.1
SUSE Linux Enterprise Server for SAP 12-SP2 (src):    LibVNCServer-0.9.9-17.11.1
SUSE Linux Enterprise Server 12-SP4 (src):    LibVNCServer-0.9.9-17.11.1
SUSE Linux Enterprise Server 12-SP3 (src):    LibVNCServer-0.9.9-17.11.1
SUSE Linux Enterprise Server 12-SP2-LTSS (src):    LibVNCServer-0.9.9-17.11.1
SUSE Linux Enterprise Server 12-SP2-BCL (src):    LibVNCServer-0.9.9-17.11.1
SUSE Linux Enterprise Server 12-SP1-LTSS (src):    LibVNCServer-0.9.9-17.11.1
SUSE Linux Enterprise Server 12-LTSS (src):    LibVNCServer-0.9.9-17.11.1
SUSE Enterprise Storage 4 (src):    LibVNCServer-0.9.9-17.11.1

Comment 8 Swamp Workflow Management 2019-02-12 17:11:25 UTC

SUSE-SU-2019:13952-1: An update that fixes three vulnerabilities is now available.

Category: security (critical)
Bug References: 1123823,1123828,1123832
CVE References: CVE-2018-20748,CVE-2018-20749,CVE-2018-20750
Sources used:
SUSE Linux Enterprise Software Development Kit 11-SP4 (src):    LibVNCServer-0.9.1-160.9.1
SUSE Linux Enterprise Server 11-SP4 (src):    LibVNCServer-0.9.1-160.9.1
SUSE Linux Enterprise Point of Sale 11-SP3 (src):    LibVNCServer-0.9.1-160.9.1
SUSE Linux Enterprise Debuginfo 11-SP4 (src):    LibVNCServer-0.9.1-160.9.1
SUSE Linux Enterprise Debuginfo 11-SP3 (src):    LibVNCServer-0.9.1-160.9.1

Comment 9 Swamp Workflow Management 2019-02-18 14:11:47 UTC

openSUSE-SU-2019:0196-1: An update that fixes three vulnerabilities is now available.

Category: security (critical)
Bug References: 1123823,1123828,1123832
CVE References: CVE-2018-20748,CVE-2018-20749,CVE-2018-20750
Sources used:
openSUSE Leap 15.0 (src):    LibVNCServer-0.9.10-lp150.3.6.1

Comment 10 Swamp Workflow Management 2019-02-18 20:10:08 UTC

openSUSE-SU-2019:0200-1: An update that fixes three vulnerabilities is now available.

Category: security (critical)
Bug References: 1123823,1123828,1123832
CVE References: CVE-2018-20748,CVE-2018-20749,CVE-2018-20750
Sources used:
openSUSE Leap 42.3 (src):    LibVNCServer-0.9.9-16.9.1

Comment 11 Marcus Meissner 2019-02-27 18:15:17 UTC

done

Comment 12 Swamp Workflow Management 2019-04-29 10:12:10 UTC

SUSE-SU-2019:0313-2: An update that fixes three vulnerabilities is now available.

Category: security (critical)
Bug References: 1123823,1123828,1123832
CVE References: CVE-2018-20748,CVE-2018-20749,CVE-2018-20750
Sources used:
SUSE Linux Enterprise Server for SAP 12-SP1 (src):    LibVNCServer-0.9.9-17.11.1

NOTE: This line indicates an update has been released for the listed product(s). At times this might be only a partial fix. If you have questions please reach out to maintenance coordination.