CVE-2019-15681

MEDIUM

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

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

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

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

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

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

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

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

Details

Source: MITRE

Published: 2019-10-29

Updated: 2020-10-23

Type: CWE-665

Risk Information

CVSS v2.0

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 v3.0

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