Critical severity9.8NVD Advisory· Published Jun 30, 2020· Updated Jun 17, 2026
CVE-2017-18922
CVE-2017-18922
Description
It was discovered that websockets.c in LibVNCServer prior to 0.9.12 did not properly decode certain WebSocket frames. A malicious attacker could exploit this by sending specially crafted WebSocket frames to a server, causing a heap-based buffer overflow.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
26- LibVNCServer/LibVNCServerdescription
- osv-coords25 versionspkg:rpm/almalinux/libvncserver-develpkg:rpm/opensuse/LibVNCServer&distro=openSUSE%20Leap%2015.1pkg:rpm/opensuse/LibVNCServer&distro=openSUSE%20Leap%2015.2pkg:rpm/suse/LibVNCServer&distro=HPE%20Helion%20OpenStack%208pkg:rpm/suse/LibVNCServer&distro=SUSE%20Enterprise%20Storage%205pkg:rpm/suse/LibVNCServer&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Package%20Hub%2015%20SP1pkg:rpm/suse/LibVNCServer&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Package%20Hub%2015%20SP2pkg: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%20SP3-BCLpkg:rpm/suse/LibVNCServer&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3-LTSSpkg:rpm/suse/LibVNCServer&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP4-LTSSpkg:rpm/suse/LibVNCServer&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5pkg: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%20Server%20for%20SAP%20Applications%2012%20SP5pkg:rpm/suse/LibVNCServer&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012%20SP5pkg:rpm/suse/LibVNCServer&distro=SUSE%20Linux%20Enterprise%20Workstation%20Extension%2015%20SP1pkg:rpm/suse/LibVNCServer&distro=SUSE%20Linux%20Enterprise%20Workstation%20Extension%2015%20SP2pkg:rpm/suse/LibVNCServer&distro=SUSE%20OpenStack%20Cloud%207pkg:rpm/suse/LibVNCServer&distro=SUSE%20OpenStack%20Cloud%208pkg:rpm/suse/LibVNCServer&distro=SUSE%20OpenStack%20Cloud%209pkg:rpm/suse/LibVNCServer&distro=SUSE%20OpenStack%20Cloud%20Crowbar%208pkg:rpm/suse/LibVNCServer&distro=SUSE%20OpenStack%20Cloud%20Crowbar%209
< 0.9.11-15.el8_2.1+ 24 more
- (no CPE)range: < 0.9.11-15.el8_2.1
- (no CPE)range: < 0.9.10-lp151.7.6.1
- (no CPE)range: < 0.9.10-lp152.9.4.1
- (no CPE)range: < 0.9.9-17.31.1
- (no CPE)range: < 0.9.9-17.31.1
- (no CPE)range: < 0.9.10-4.19.1
- (no CPE)range: < 0.9.10-4.19.1
- (no CPE)range: < 0.9.9-17.31.1
- (no CPE)range: < 0.9.9-17.31.1
- (no CPE)range: < 0.9.9-17.31.1
- (no CPE)range: < 0.9.9-17.31.1
- (no CPE)range: < 0.9.9-17.31.1
- (no CPE)range: < 0.9.9-17.31.1
- (no CPE)range: < 0.9.9-17.31.1
- (no CPE)range: < 0.9.9-17.31.1
- (no CPE)range: < 0.9.9-17.31.1
- (no CPE)range: < 0.9.9-17.31.1
- (no CPE)range: < 0.9.9-17.31.1
- (no CPE)range: < 0.9.10-4.19.1
- (no CPE)range: < 0.9.10-4.19.1
- (no CPE)range: < 0.9.9-17.31.1
- (no CPE)range: < 0.9.9-17.31.1
- (no CPE)range: < 0.9.9-17.31.1
- (no CPE)range: < 0.9.9-17.31.1
- (no CPE)range: < 0.9.9-17.31.1
Patches
Vulnerability mechanics
References
13- cert-portal.siemens.com/productcert/pdf/ssa-390195.pdfnvdPatchThird Party Advisory
- github.com/LibVNC/libvncserver/commit/aac95a9dcf4bbba87b76c72706c3221a842ca433nvdPatchThird Party Advisory
- usn.ubuntu.com/4407-1/nvdPatchThird Party Advisory
- lists.opensuse.org/opensuse-security-announce/2020-07/msg00020.htmlnvdMailing ListThird Party Advisory
- lists.opensuse.org/opensuse-security-announce/2020-07/msg00028.htmlnvdMailing ListThird Party Advisory
- lists.opensuse.org/opensuse-security-announce/2020-07/msg00033.htmlnvdMailing ListThird Party Advisory
- lists.opensuse.org/opensuse-security-announce/2020-07/msg00055.htmlnvdMailing ListThird Party Advisory
- lists.opensuse.org/opensuse-security-announce/2020-07/msg00066.htmlnvdMailing ListThird Party Advisory
- www.openwall.com/lists/oss-security/2020/06/30/3nvdMailing ListThird Party Advisory
- bugzilla.redhat.com/show_bug.cginvdIssue TrackingThird Party Advisory
- www.openwall.com/lists/oss-security/2020/06/30/2nvdMailing ListThird Party Advisory
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4F6FUH4EFK4NAP6GT4TQRTBKWIRCZLIY/nvd
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NVP7TJVYJDXDFRHVQ3ENEN3H354QPXEZ/nvd
News mentions
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