High severity7.5OSV Advisory· Published Dec 19, 2018· Updated Jun 17, 2026
CVE-2018-20023
CVE-2018-20023
Description
LibVNC before 8b06f835e259652b0ff026898014fc7297ade858 contains CWE-665: Improper Initialization vulnerability in VNC Repeater client code that allows attacker to read stack memory and can be abuse for information disclosure. Combined with another vulnerability, it can be used to leak stack memory layout and in bypassing ASLR
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
19- Range: LibVNCServer-0.9.10, LibVNCServer-0.9.11, LibVNCServer-0.9.8, …
- Range: < 8b06f835e259652b0ff026898014fc7297ade858
- osv-coords17 versionspkg:rpm/opensuse/LibVNCServer&distro=openSUSE%20Leap%2015.0pkg:rpm/suse/LibVNCServer&distro=SUSE%20Enterprise%20Storage%204pkg:rpm/suse/LibVNCServer&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Package%20Hub%2015pkg:rpm/suse/LibVNCServer&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP1-LTSSpkg:rpm/suse/LibVNCServer&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP2-BCLpkg:rpm/suse/LibVNCServer&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP2-LTSSpkg:rpm/suse/LibVNCServer&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3pkg:rpm/suse/LibVNCServer&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP4pkg:rpm/suse/LibVNCServer&distro=SUSE%20Linux%20Enterprise%20Server%2012-LTSSpkg:rpm/suse/LibVNCServer&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP1pkg:rpm/suse/LibVNCServer&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP2pkg:rpm/suse/LibVNCServer&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP3pkg:rpm/suse/LibVNCServer&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP4pkg:rpm/suse/LibVNCServer&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012%20SP3pkg:rpm/suse/LibVNCServer&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012%20SP4pkg:rpm/suse/LibVNCServer&distro=SUSE%20Linux%20Enterprise%20Workstation%20Extension%2015pkg:rpm/suse/LibVNCServer&distro=SUSE%20OpenStack%20Cloud%207
< 0.9.10-lp150.3.3.1+ 16 more
- (no CPE)range: < 0.9.10-lp150.3.3.1
- (no CPE)range: < 0.9.9-17.8.1
- (no CPE)range: < 0.9.10-4.3.1
- (no CPE)range: < 0.9.9-17.8.1
- (no CPE)range: < 0.9.9-17.8.1
- (no CPE)range: < 0.9.9-17.8.1
- (no CPE)range: < 0.9.9-17.8.1
- (no CPE)range: < 0.9.9-17.8.1
- (no CPE)range: < 0.9.9-17.8.1
- (no CPE)range: < 0.9.9-17.8.1
- (no CPE)range: < 0.9.9-17.8.1
- (no CPE)range: < 0.9.9-17.8.1
- (no CPE)range: < 0.9.9-17.8.1
- (no CPE)range: < 0.9.9-17.8.1
- (no CPE)range: < 0.9.9-17.8.1
- (no CPE)range: < 0.9.10-4.3.1
- (no CPE)range: < 0.9.9-17.8.1
Patches
Vulnerability mechanics
References
8- ics-cert.kaspersky.com/advisories/klcert-advisories/2018/12/19/klcert-18-033-libvnc-memory-leak/nvdThird Party Advisory
- lists.debian.org/debian-lts-announce/2018/12/msg00017.htmlnvdMailing ListThird Party Advisory
- usn.ubuntu.com/3877-1/nvdThird Party Advisory
- www.debian.org/security/2019/dsa-4383nvdThird Party Advisory
- lists.debian.org/debian-lts-announce/2019/10/msg00042.htmlnvd
- security.gentoo.org/glsa/201908-05nvd
- usn.ubuntu.com/4547-1/nvd
- usn.ubuntu.com/4587-1/nvd
News mentions
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