Bug 1173875 (CVE-2019-20839)

Summary:	VUL-0: CVE-2019-20839: LibVNCServer: buffer overflow in ConnectClientToUnixSock()
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:	Major
Priority:	P3 - Medium	CC:	smash_bz
Version:	unspecified
Target Milestone:	---
Hardware:	Other
OS:	Other
URL:	https://smash.suse.de/issue/261713/
Whiteboard:	CVSSv3.1:SUSE:CVE-2019-20839:7.5:(AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
Found By:	Security Response Team	Services Priority:
Business Priority:		Blocker:	---
Marketing QA Status:	---	IT Deployment:	---

Description Alexandros Toptsoglou 2020-07-08 08:04:52 UTC

CVE-2019-20839

libvncclient/sockets.c in LibVNCServer before 0.9.13 has a buffer overflow via a long socket filename.

Upstream Reference:

https://github.com/LibVNC/libvncserver/commit/3fd03977c9b35800d73a865f167338cb4d05b0c1

References:
https://bugzilla.redhat.com/show_bug.cgi?id=1849877
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2019-20839
http://people.canonical.com/~ubuntu-security/cve/2019/CVE-2019-20839.html
https://access.redhat.com/security/cve/CVE-2019-20839
https://github.com/LibVNC/libvncserver/commit/3fd03977c9b35800d73a865f167338cb4d05b0c1
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-20839
https://github.com/LibVNC/libvncserver/compare/LibVNCServer-0.9.12...LibVNCServer-0.9.13
https://lists.debian.org/debian-lts-announce/2020/06/msg00035.html

Comment 1 Petr Gajdos 2020-07-09 08:40:28 UTC

In 11/LibVNCServer, code not found, considering not affected.

Comment 2 Petr Gajdos 2020-07-09 13:32:08 UTC

Submitted for 15,12/LibVNCServer.

I believe all fixed.

Comment 4 Swamp Workflow Management 2020-07-15 13:28:01 UTC

SUSE-SU-2020:1922-1: An update that fixes 10 vulnerabilities is now available.

Category: security (important)
Bug References: 1173477,1173691,1173694,1173700,1173701,1173743,1173874,1173875,1173876,1173880
CVE References: CVE-2017-18922,CVE-2018-21247,CVE-2019-20839,CVE-2019-20840,CVE-2020-14397,CVE-2020-14398,CVE-2020-14399,CVE-2020-14400,CVE-2020-14401,CVE-2020-14402
Sources used:
SUSE Linux Enterprise Workstation Extension 15-SP2 (src):    LibVNCServer-0.9.10-4.22.1
SUSE Linux Enterprise Workstation Extension 15-SP1 (src):    LibVNCServer-0.9.10-4.22.1
SUSE Linux Enterprise Module for Packagehub Subpackages 15-SP2 (src):    LibVNCServer-0.9.10-4.22.1
SUSE Linux Enterprise Module for Packagehub Subpackages 15-SP1 (src):    LibVNCServer-0.9.10-4.22.1

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.

Comment 5 Swamp Workflow Management 2020-07-18 16:14:27 UTC

openSUSE-SU-2020:0988-1: An update that fixes 10 vulnerabilities is now available.

Category: security (important)
Bug References: 1173477,1173691,1173694,1173700,1173701,1173743,1173874,1173875,1173876,1173880
CVE References: CVE-2017-18922,CVE-2018-21247,CVE-2019-20839,CVE-2019-20840,CVE-2020-14397,CVE-2020-14398,CVE-2020-14399,CVE-2020-14400,CVE-2020-14401,CVE-2020-14402
Sources used:
openSUSE Leap 15.1 (src):    LibVNCServer-0.9.10-lp151.7.9.1

Comment 6 Swamp Workflow Management 2020-07-21 13:13:41 UTC

openSUSE-SU-2020:1025-1: An update that fixes 10 vulnerabilities is now available.

Category: security (important)
Bug References: 1173477,1173691,1173694,1173700,1173701,1173743,1173874,1173875,1173876,1173880
CVE References: CVE-2017-18922,CVE-2018-21247,CVE-2019-20839,CVE-2019-20840,CVE-2020-14397,CVE-2020-14398,CVE-2020-14399,CVE-2020-14400,CVE-2020-14401,CVE-2020-14402
Sources used:
openSUSE Leap 15.2 (src):    LibVNCServer-0.9.10-lp152.9.8.1

Comment 7 Swamp Workflow Management 2020-07-24 16:22:19 UTC

openSUSE-SU-2020:1056-1: An update that fixes 10 vulnerabilities is now available.

Category: security (important)
Bug References: 1173477,1173691,1173694,1173700,1173701,1173743,1173874,1173875,1173876,1173880
CVE References: CVE-2017-18922,CVE-2018-21247,CVE-2019-20839,CVE-2019-20840,CVE-2020-14397,CVE-2020-14398,CVE-2020-14399,CVE-2020-14400,CVE-2020-14401,CVE-2020-14402
Sources used:
openSUSE Leap 15.2 (src):    LibVNCServer-0.9.10-lp152.9.4.2

Comment 10 Swamp Workflow Management 2020-08-07 16:16:58 UTC

SUSE-SU-2020:2167-1: An update that fixes 12 vulnerabilities is now available.

Category: security (important)
Bug References: 1173477,1173691,1173694,1173700,1173701,1173743,1173874,1173875,1173876,1173880
CVE References: CVE-2017-18922,CVE-2018-21247,CVE-2019-20839,CVE-2019-20840,CVE-2020-14397,CVE-2020-14398,CVE-2020-14399,CVE-2020-14400,CVE-2020-14401,CVE-2020-14402,CVE-2020-14403,CVE-2020-14404
JIRA References: 
Sources used:
SUSE OpenStack Cloud Crowbar 9 (src):    LibVNCServer-0.9.9-17.31.1
SUSE OpenStack Cloud Crowbar 8 (src):    LibVNCServer-0.9.9-17.31.1
SUSE OpenStack Cloud 9 (src):    LibVNCServer-0.9.9-17.31.1
SUSE OpenStack Cloud 8 (src):    LibVNCServer-0.9.9-17.31.1
SUSE OpenStack Cloud 7 (src):    LibVNCServer-0.9.9-17.31.1
SUSE Linux Enterprise Software Development Kit 12-SP5 (src):    LibVNCServer-0.9.9-17.31.1
SUSE Linux Enterprise Server for SAP 12-SP4 (src):    LibVNCServer-0.9.9-17.31.1
SUSE Linux Enterprise Server for SAP 12-SP3 (src):    LibVNCServer-0.9.9-17.31.1
SUSE Linux Enterprise Server for SAP 12-SP2 (src):    LibVNCServer-0.9.9-17.31.1
SUSE Linux Enterprise Server 12-SP5 (src):    LibVNCServer-0.9.9-17.31.1
SUSE Linux Enterprise Server 12-SP4-LTSS (src):    LibVNCServer-0.9.9-17.31.1
SUSE Linux Enterprise Server 12-SP3-LTSS (src):    LibVNCServer-0.9.9-17.31.1
SUSE Linux Enterprise Server 12-SP3-BCL (src):    LibVNCServer-0.9.9-17.31.1
SUSE Linux Enterprise Server 12-SP2-LTSS (src):    LibVNCServer-0.9.9-17.31.1
SUSE Linux Enterprise Server 12-SP2-BCL (src):    LibVNCServer-0.9.9-17.31.1
SUSE Enterprise Storage 5 (src):    LibVNCServer-0.9.9-17.31.1
HPE Helion Openstack 8 (src):    LibVNCServer-0.9.9-17.31.1

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.

Comment 11 Alexandros Toptsoglou 2020-08-27 13:50:21 UTC

Done

Comment 12 OBSbugzilla Bot 2021-09-17 10:40:49 UTC

This is an autogenerated message for OBS integration:
This bug (1173875) was mentioned in
https://build.opensuse.org/request/show/919689 Factory / LibVNCServer