CVE-2019-15681

high

Description

LibVNC commit before d01e1bb4246323ba6fcee3b82ef1faa9b1dac82a contains a memory leak (CWE-655) in VNC server code, which allow an attacker to read stack memory and can be abused for information disclosure. Combined with another vulnerability, it can be used to leak stack memory and bypass ASLR. This attack appear to be exploitable via network connectivity. These vulnerabilities have been fixed in commit d01e1bb4246323ba6fcee3b82ef1faa9b1dac82a.

References

https://github.com/LibVNC/libvncserver/commit/d01e1bb4246323ba6fcee3b82ef1faa9b1dac82a

https://lists.debian.org/debian-lts-announce/2019/10/msg00039.html

https://lists.debian.org/debian-lts-announce/2019/10/msg00042.html

https://lists.debian.org/debian-lts-announce/2019/11/msg00032.html

https://lists.debian.org/debian-lts-announce/2019/12/msg00028.html

http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00027.html

https://usn.ubuntu.com/4407-1/

http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00073.html

https://usn.ubuntu.com/4547-1/

https://usn.ubuntu.com/4573-1/

https://usn.ubuntu.com/4587-1/

https://cert-portal.siemens.com/productcert/pdf/ssa-390195.pdf

Details

Source: MITRE

Published: 2019-10-29

Updated: 2022-04-05

Type: CWE-665

Risk Information

CVSS v2

Base Score: 5

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

Impact Score: 2.9

Exploitability Score: 10

Severity: MEDIUM

CVSS v3

Base Score: 7.5

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Impact Score: 3.6

Exploitability Score: 3.9

Severity: HIGH