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 | Public exploit code for vulnerability #1 is available. |
Vulnerable software |
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.
EUVDB-ID: #VU76723
Risk: Medium
CVSSv4.0: 7.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P/U:Green]
CVE-ID: CVE-2020-26243
CWE-ID:
CWE-401 - Missing release of memory after effective lifetime
Exploit availability: Yes
DescriptionThe 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.
MitigationUpdate the affected package nanopb to the latest version.
Vulnerable software versionsUbuntu: 20.04
nanopb (Ubuntu package): before Ubuntu Pro
CPE2.3 External linkshttp://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. However, proof of concept for this vulnerability is available.
EUVDB-ID: #VU76724
Risk: Low
CVSSv4.0: 1.1 [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/E:U/U:Clear]
CVE-ID: CVE-2021-21401
CWE-ID:
CWE-763 - Release of invalid pointer or reference
Exploit availability: No
DescriptionThe 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.
Update the affected package nanopb to the latest version.
Vulnerable software versionsUbuntu: 20.04
nanopb (Ubuntu package): before Ubuntu Pro
CPE2.3 External linkshttp://ubuntu.com/security/notices/USN-6121-1
Q & A
Can this vulnerability be exploited remotely?
No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.