Ubuntu update for strongswan



Published: 2022-01-24
Risk High
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2021-45079
CWE-ID CWE-371
Exploitation vector Network
Public exploit N/A
Vulnerable software
Subscribe
Ubuntu
Operating systems & Components / Operating system

strongswan (Ubuntu package)
Operating systems & Components / Operating system package or component

libstrongswan (Ubuntu package)
Operating systems & Components / Operating system package or component

Vendor Canonical Ltd.

Security Bulletin

This security bulletin contains one high risk vulnerability.

1) State Issues

EUVDB-ID: #VU59994

Risk: High

CVSSv3.1: 7.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-45079

CWE-ID: CWE-371 - State Issues

Exploit availability: No

Description

The vulnerability allows a remote attacker to bypass authentication.

The vulnerability exists due to improper handling of EAP-Success messages. A remote attacker can send a specially crafted (early) EAP-Success message to the affected system and bypass authentication or perform a denial of service attack.

Mitigation

Update the affected package strongswan to the latest version.

Vulnerable software versions

Ubuntu: 18.04 - 21.10

strongswan (Ubuntu package): before 5.9.1-1ubuntu3.2

libstrongswan (Ubuntu package): before 5.9.1-1ubuntu3.2

External links

http://ubuntu.com/security/notices/USN-5250-1


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.



###SIDEBAR###