9.8

CVE-2018-7225

Exploit
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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Libvncserver Project ≫ Libvncserver Version <= 0.9.11
Debian ≫ Debian Linux Version 7.0
Debian ≫ Debian Linux Version 8.0
Debian ≫ Debian Linux Version 9.0
Canonical ≫ Ubuntu Linux Version 14.04 SwEdition lts
Canonical ≫ Ubuntu Linux Version 16.04 SwEdition lts
Canonical ≫ Ubuntu Linux Version 17.10
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 6.11% 0.927
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
NIST 9.8 3.9 5.9
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NIST 7.5 10 6.4
AV:N/AC:L/Au:N/C:P/I:P/A:P
CWE-190 Integer Overflow or Wraparound

The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.

https://lists.debian.org/debian-lts-announce/2019/10/msg00042.html
https://usn.ubuntu.com/4587-1/
https://lists.debian.org/debian-lts-announce/2019/11/msg00032.html
https://lists.debian.org/debian-lts-announce/2019/12/msg00028.html
https://usn.ubuntu.com/4573-1/
http://www.openwall.com/lists/oss-security/2018/02/18/1
Third Party Advisory
Exploit
Mailing List
http://www.securityfocus.com/bid/103107
Third Party Advisory
VDB Entry
https://access.redhat.com/errata/RHSA-2018:1055
Third Party Advisory
https://github.com/LibVNC/libvncserver/issues/218
Third Party Advisory
https://lists.debian.org/debian-lts-announce/2018/03/msg00035.html
Third Party Advisory
Mailing List
https://security.gentoo.org/glsa/201908-05
https://usn.ubuntu.com/3618-1/
Third Party Advisory
https://usn.ubuntu.com/4547-1/
https://www.debian.org/security/2018/dsa-4221
Third Party Advisory