Ubuntu update for nanopb

Published: 2023-05-31

Risk	Medium
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2020-26243 CVE-2021-21401
CWE-ID	CWE-401 CWE-763
Exploitation vector	Network
Public exploit	N/A
Vulnerable software Subscribe	Ubuntu Operating systems & Components / Operating system nanopb (Ubuntu package) Operating systems & Components / Operating system package or component
Vendor	Canonical Ltd.

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Memory leak

EUVDB-ID: #VU76723

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-26243

CWE-ID: CWE-401 - Missing release of memory after effective lifetime

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform DoS attack on the target system.

The vulnerability exists due memory leak. A remote attacker can force the application to leak memory and perform denial of service attack.

Mitigation

Update the affected package nanopb to the latest version.

Vulnerable software versions

Ubuntu: 20.04

nanopb (Ubuntu package): before Ubuntu Pro

External links

http://ubuntu.com/security/notices/USN-6121-1

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Release of invalid pointer or reference

EUVDB-ID: #VU76724

Risk: Low

CVSSv3.1: 2.9 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-21401

CWE-ID: CWE-763 - Release of invalid pointer or reference