critique
CVE-2017-18922
libvncserver: websocket decoding buffer overflow
Dans la Trivy database depuis au moins le 24 oct. 2026, 07:11 UTCLa date d'entrée avant ce build n'est pas enregistrée.
Sévérité par source
NVD9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Red Hat9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Le label propre à Trivy est CRITICAL. Critique selon NVD. Plus basse selon Red Hat (élevée), AlmaLinux (élevée), Oracle (élevée), Ubuntu (moyenne).
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.
Paquets affectés et versions corrigées
| Source | Paquet | Corrigé en |
|---|---|---|
| alma 8 | libvncserver-devel | 0.9.11-15.el8_2.1 |
| debian 10 | libvncserver | pas de correctif indiqué |
| debian 11 | libvncserver | 0.9.12+dfsg-3 |
| debian 12 | libvncserver | 0.9.12+dfsg-3 |
| debian 13 | libvncserver | 0.9.12+dfsg-3 |
| debian 14 | libvncserver | 0.9.12+dfsg-3 |
| debian 9 | libvncserver | pas de correctif indiqué |
| echo | libvncserver | 0.9.12+dfsg-3 |
| Oracle Linux 7 | libvncserver, libvncserver-devel | 0.9.9-14.el7_8.1 |
| Oracle Linux 8 | libvncserver, libvncserver-devel | 0.9.11-15.el8_2.1 |
| ubuntu 16.04 | libvncserver | 0.9.10+dfsg-3ubuntu0.16.04.4 |
| ubuntu 16.04-ESM | libvncserver | 0.9.10+dfsg-3ubuntu0.16.04.4 |
Afficher les 19 entrées de 17 sources
| Source | Paquet | Corrigé en |
|---|---|---|
| alma 8 | libvncserver-devel | 0.9.11-15.el8_2.1 |
| debian 10 | libvncserver | pas de correctif indiqué |
| debian 11 | libvncserver | 0.9.12+dfsg-3 |
| debian 12 | libvncserver | 0.9.12+dfsg-3 |
| debian 13 | libvncserver | 0.9.12+dfsg-3 |
| debian 14 | libvncserver | 0.9.12+dfsg-3 |
| debian 9 | libvncserver | pas de correctif indiqué |
| echo | libvncserver | 0.9.12+dfsg-3 |
| Oracle Linux 7 | libvncserver | 0.9.9-14.el7_8.1 |
| Oracle Linux 7 | libvncserver-devel | 0.9.9-14.el7_8.1 |
| Oracle Linux 8 | libvncserver | 0.9.11-15.el8_2.1 |
| Oracle Linux 8 | libvncserver-devel | 0.9.11-15.el8_2.1 |
| ubuntu 16.04 | libvncserver | 0.9.10+dfsg-3ubuntu0.16.04.4 |
| ubuntu 16.04-ESM | libvncserver | 0.9.10+dfsg-3ubuntu0.16.04.4 |
| ubuntu 18.04 | libvncserver | 0.9.11+dfsg-1ubuntu1.2 |
| ubuntu 18.04-ESM | libvncserver | 0.9.11+dfsg-1ubuntu1.2 |
| ubuntu 19.10 | libvncserver | 0.9.11+dfsg-1.3ubuntu0.1 |
| ubuntu 20.04 | libvncserver | 0.9.12+dfsg-9ubuntu0.1 |
| ubuntu 20.04-ESM | libvncserver | 0.9.12+dfsg-9ubuntu0.1 |
Références
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00020.html
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00028.html
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00033.html
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00055.html
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00066.html
- http://www.openwall.com/lists/oss-security/2020/06/30/3
- https://access.redhat.com/security/cve/CVE-2017-18922
- https://bugzilla.redhat.com/show_bug.cgi?id=1852356
Les 19 références
- https://cert-portal.siemens.com/productcert/pdf/ssa-390195.pdf
- https://github.com/LibVNC/libvncserver/commit/aac95a9dcf4bbba87b76c72706c3221a842ca433
- https://linux.oracle.com/cve/CVE-2017-18922.html
- https://linux.oracle.com/errata/ELSA-2020-3385.html
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4F6FUH4EFK4NAP6GT4TQRTBKWIRCZLIY/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/NVP7TJVYJDXDFRHVQ3ENEN3H354QPXEZ/
- https://nvd.nist.gov/vuln/detail/CVE-2017-18922
- https://ubuntu.com/security/notices/USN-4407-1
- https://usn.ubuntu.com/4407-1/
- https://www.cve.org/CVERecord?id=CVE-2017-18922
- https://www.openwall.com/lists/oss-security/2020/06/30/2