CVE Vulnerabilities

CVE-2018-19878

Use After Free

Published: Jun 19, 2019 | Modified: Nov 21, 2024
CVSS 3.x
6.5
MEDIUM
Source:
NVD
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CVSS 2.x
6.8 MEDIUM
AV:N/AC:L/Au:S/C:N/I:N/A:C
RedHat/V2
RedHat/V3
Ubuntu

An issue was discovered on Teltonika RTU950 R_31.04.89 devices. The application allows a user to login without limitation. For every successful login request, the application saves a session. A user can re-login without logging out, causing the application to store the session in memory. Exploitation of this vulnerability will increase memory use and consume free space.

Weakness

The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory “belongs” to the code that operates on the new pointer.

Affected Software

Name Vendor Start Version End Version
Rut950_firmware Teltonika r_31.04.89 (including) r_31.04.89 (including)

Potential Mitigations

References