CVE-2018-7225

CRITICAL

LibVNCServer < 0.9.11 - Integer Overflow via VNC Packet Length

Title source: llm
STIX 2.1

Description

An issue was discovered in LibVNCServer through 0.9.11. rfbProcessClientNormalMessage() in rfbserver.c does not sanitize msg.cct.length, leading to access to uninitialized and potentially sensitive data or possibly unspecified other impact (e.g., an integer overflow) via specially crafted VNC packets.

References (14)

Core 14
Core References
Third Party Advisory vendor-advisory x_refsource_debian
https://www.debian.org/security/2018/dsa-4221
Third Party Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/3618-1/
Third Party Advisory x_refsource_misc
https://github.com/LibVNC/libvncserver/issues/218
Mailing List, Third Party Advisory mailing-list x_refsource_mlist
https://lists.debian.org/debian-lts-announce/2018/03/msg00035.html
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/103107
Exploit, Mailing List, Third Party Advisory x_refsource_misc
http://www.openwall.com/lists/oss-security/2018/02/18/1
Third Party Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2018:1055
Third Party Advisory vendor-advisory x_refsource_gentoo
https://security.gentoo.org/glsa/201908-05
Mailing List mailing-list x_refsource_mlist
https://lists.debian.org/debian-lts-announce/2019/10/msg00042.html
Mailing List mailing-list x_refsource_mlist
https://lists.debian.org/debian-lts-announce/2019/11/msg00032.html
Mailing List mailing-list x_refsource_mlist
https://lists.debian.org/debian-lts-announce/2019/12/msg00028.html
Vendor Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/4547-1/
Vendor Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/4573-1/
Vendor Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/4587-1/

Scores

CVSS v3 9.8
EPSS 0.0645
EPSS Percentile 92.9%
Attack Vector NETWORK
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Details

CWE
CWE-190
Status published
Products (14)
canonical/ubuntu_linux 14.04
canonical/ubuntu_linux 16.04
canonical/ubuntu_linux 17.10
debian/debian_linux 7.0
debian/debian_linux 8.0
debian/debian_linux 9.0
libvncserver_project/libvncserver < 0.9.11
redhat/enterprise_linux_desktop 7.0
redhat/enterprise_linux_server 7.0
redhat/enterprise_linux_server_aus 7.6
... and 4 more
Published Feb 19, 2018
Tracked Since Feb 18, 2026