CVE-2019-20788

libvncclient/cursor.c in LibVNCServer through 0.9.12 has a HandleCursorShape integer overflow and heap-based buffer overflow via a large height or width value. NOTE: this may overlap CVE-2019-15690.

CVSS v3.0 9.8 CRITICAL
CVSS v2.0 7.5 HIGH

9.8^/10

CVSS v3.0 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

7.5^/10

CVSS v2.0 : HIGH

Vector : AV:N/AC:L/Au:N/C:P/I:P/A:P

Exploitability : 10.0 / Impact : 6.4

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://github.com/LibVNC/libvncserver/commit/54220248886b5001fbbb9fa73c4e1a2cb9413fed	Patch Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00027.html	Mailing List Third Party Advisory
https://usn.ubuntu.com/4407-1/	Third Party Advisory
https://securitylab.github.com/advisories/GHSL-2020-064-libvnc-libvncclient	Exploit Third Party Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-390195.pdf

Configurations

Configuration 1 (hide)

cpe:2.3:a:libvncserver_project:libvncserver:*:*:*:*:*:*:*:*

Configuration 2 (hide)

OR	cpe:2.3:o:canonical:ubuntu_linux:16.04::::lts:::
	cpe:2.3:o:canonical:ubuntu_linux:18.04::::lts:::
	cpe:2.3:o:canonical:ubuntu_linux:19.10:::::::*
	cpe:2.3:o:canonical:ubuntu_linux:20.04::::lts:::

Configuration 3 (hide)

cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*

Information

Published : 2020-04-23 19:15

Updated : 2021-12-14 14:15

NVD link : CVE-2019-20788

Mitre link : CVE-2019-20788

JSON object : View

Products Affected

opensuse

leap

libvncserver_project

libvncserver

canonical

ubuntu_linux

CWE

CWE-190

Integer Overflow or Wraparound

CWE-787

Out-of-bounds Write

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