High severity7.5OSV Advisory· Published Dec 19, 2018· Updated Jun 17, 2026
CVE-2018-20022
CVE-2018-20022
Description
LibVNC before 2f5b2ad1c6c99b1ac6482c95844a84d66bb52838 contains multiple weaknesses CWE-665: Improper Initialization vulnerability in VNC 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
25- Range: LibVNCServer-0.9.10, LibVNCServer-0.9.11, LibVNCServer-0.9.8, …
- Range: < 2f5b2ad1c6c99b1ac6482c95844a84d66bb52838
- osv-coords23 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%20Point%20of%20Sale%2011%20SP3pkg:rpm/suse/LibVNCServer&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP3-LTSSpkg:rpm/suse/LibVNCServer&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP3-TERADATApkg:rpm/suse/LibVNCServer&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP4pkg: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%2011%20SP4pkg: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%2011%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+ 22 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: < 0.9.1-160.6.1
- (no CPE)range: < 0.9.1-160.6.1
- (no CPE)range: < 0.9.1-160.6.1
- (no CPE)range: < 0.9.1-160.6.1
- (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: < 0.9.1-160.6.1
- (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: < 0.9.1-160.6.1
- (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
12- ics-cert.kaspersky.com/advisories/klcert-advisories/2018/12/19/klcert-18-032-libvnc-multiple-memory-leaks/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
- lists.debian.org/debian-lts-announce/2019/11/msg00033.htmlnvd
- lists.debian.org/debian-lts-announce/2019/12/msg00028.htmlnvd
- security.gentoo.org/glsa/201908-05nvd
- security.gentoo.org/glsa/202006-06nvd
- usn.ubuntu.com/4547-1/nvd
- usn.ubuntu.com/4547-2/nvd
- usn.ubuntu.com/4587-1/nvd
News mentions
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