CVE Vulnerabilities

CVE-2020-27523

Use of Externally-Controlled Format String

Published: Nov 11, 2020 | Modified: Jul 21, 2021
CVSS 3.x
7.5
HIGH
Source:
NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 2.x
5 MEDIUM
AV:N/AC:L/Au:N/C:N/I:N/A:P
RedHat/V2
RedHat/V3
Ubuntu

Solstice-Pod up to 5.0.2 WEBRTC server mishandles the format-string specifiers %x; %p; %c and %s in the screen_key, display_name, browser_name, and operation_system parameter during the authentication process. This may crash the server and force Solstice-Pod to reboot, which leads to a denial of service.

Weakness

The product uses a function that accepts a format string as an argument, but the format string originates from an external source.

Affected Software

Name Vendor Start Version End Version
Solstice_pod_firmware Mersive * 5.0.2 (including)

Extended Description

When an attacker can modify an externally-controlled format string, this can lead to buffer overflows, denial of service, or data representation problems. It should be noted that in some circumstances, such as internationalization, the set of format strings is externally controlled by design. If the source of these format strings is trusted (e.g. only contained in library files that are only modifiable by the system administrator), then the external control might not itself pose a vulnerability.

Potential Mitigations

References