Ubuntu update for openvswitch



Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2021-3905
CWE-ID CWE-401
Exploitation vector Network
Public exploit N/A
Vulnerable software
 Ubuntu
Operating systems & Components / Operating system

openvswitch-common (Ubuntu package)
Operating systems & Components / Operating system package or component

Vendor Canonical Ltd.

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Memory leak

EUVDB-ID: #VU73248

Risk: Medium

CVSSv4.0: 6.6 [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:U/U:Green]

CVE-ID: CVE-2021-3905

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 in lib/ipf.c during userspace IP fragmentation processing. A remote attacker can send specially crafted packet fragments to the system to trigger memory leak and perform denial of service attack.

Mitigation

Update the affected package openvswitch to the latest version.

Vulnerable software versions

Ubuntu: 21.10

openvswitch-common (Ubuntu package): before 2.16.0-0ubuntu2.1

CPE2.3 External links

https://ubuntu.com/security/notices/USN-5242-1


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.



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