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CVE-2017-18922

Status Candidate

Overview

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.

Related Files

Red Hat Security Advisory 2020-3588-01
Posted Sep 1, 2020
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2020-3588-01 - LibVNCServer is a C library that enables you to implement VNC server functionality into own programs. Issues addressed include a buffer overflow vulnerability.

tags | advisory, overflow
systems | linux, redhat
advisories | CVE-2017-18922
MD5 | 07df140530997268c9b25b94d0a08046
Red Hat Security Advisory 2020-3456-01
Posted Aug 17, 2020
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2020-3456-01 - LibVNCServer is a C library that enables you to implement VNC server functionality into own programs. Issues addressed include a buffer overflow vulnerability.

tags | advisory, overflow
systems | linux, redhat
advisories | CVE-2017-18922
MD5 | 3ac3c9e7ef0077bdcc6c1864bff3b33d
Red Hat Security Advisory 2020-3385-01
Posted Aug 10, 2020
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2020-3385-01 - LibVNCServer is a C library that enables you to implement VNC server functionality into own programs. Issues addressed include a buffer overflow vulnerability.

tags | advisory, overflow
systems | linux, redhat
advisories | CVE-2017-18922
MD5 | 81cd0220bba70e36f109ac88fbf015eb
Red Hat Security Advisory 2020-3281-01
Posted Aug 3, 2020
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2020-3281-01 - LibVNCServer is a C library that enables you to implement VNC server functionality into own programs. Issues addressed include a buffer overflow vulnerability.

tags | advisory, overflow
systems | linux, redhat
advisories | CVE-2017-18922
MD5 | 7ac69178bbe975e57dc7f338a6577779
Ubuntu Security Notice USN-4407-1
Posted Jul 2, 2020
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4407-1 - It was discovered that LibVNCServer incorrectly handled decompressing data. An attacker could possibly use this issue to cause LibVNCServer to crash, resulting in a denial of service. It was discovered that an information disclosure vulnerability existed in LibVNCServer when sending a ServerCutText message. An attacker could possibly use this issue to expose sensitive information. This issue only affected Ubuntu 19.10, Ubuntu 18.04 LTS, and Ubuntu 16.04 LTS. Various other issues were also addressed.

tags | advisory, denial of service, info disclosure
systems | linux, ubuntu
advisories | CVE-2017-18922, CVE-2019-15680, CVE-2019-15681, CVE-2019-20788
MD5 | ab2befd375e9d3e5fb9cb009d5446e52
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