Release of invalid pointer or reference in Nanopb - CVE-2021-21401
Published: May 31, 2023
Vulnerability identifier: #VU76724
CSH Severity: Low
CVSS v4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2021-21401
CWE-ID: CWE-763
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to preform a denial of service (DoS) attack.
The vulnerability exists due to release of invalid pointer. A local user can pass a specially crafted message to the application and perform a denial of service attack.
Affected software
Nanopb
Ubuntu
nanopb (Ubuntu package)
Ubuntu
nanopb (Ubuntu package)
How to mitigate CVE-2021-21401
Install updates from vendor's website.
Nanopb - addressed in versions 0.3.9.8, 0.4.5
nanopb (Ubuntu package) - update to Ubuntu Pro
nanopb (Ubuntu package) - update to Ubuntu Pro