Ubuntu Security Notice USN-5250-2 ≈ Packet Storm

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Ubuntu Security Notice USN-5250-2^[6]: Authored by Ubuntu ^[7] | Site security.ubuntu.com ^[8]; Ubuntu Security Notice 5250-2 - USN-5250-1 fixed a vulnerability in strongSwan. This update provides the corresponding update for Ubuntu 14.04 ESM and Ubuntu 16.04 ESM. Zhuowei Zhang discovered that stringSwan incorrectly handled EAP authentication. A remote attacker could use this issue to cause strongSwan to crash, resulting in a denial of service, or possibly bypass client and server authentication.; systems | linux ^[9], ubuntu ^[10]; advisories | CVE-2021-45079 ^[11]; MD5 | 37c92fd738acfb86c341e7b7fdf588d7; Download ^[12] | Favorite ^[13] | View ^[14]

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Ubuntu Security Notice USN-5250-2
January 24, 2022
strongswan vulnerability
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A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 16.04 ESM
- Ubuntu 14.04 ESM
Summary:
strongSwan could crash or allow unintended access to network services.
Software Description:
- strongswan: IPsec VPN solution
Details:
USN-5250-1 fixed a vulnerability in strongSwan. This update provides
the corresponding update for Ubuntu 14.04 ESM and Ubuntu 16.04 ESM.
Original advisory details:
Zhuowei Zhang discovered that stringSwan incorrectly handled EAP
authentication. A remote attacker could use this issue to cause strongSwan
to crash, resulting in a denial of service, or possibly bypass client and
server authentication.
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 16.04 ESM:
libstrongswan                   5.3.5-1ubuntu3.8+esm2
strongswan                      5.3.5-1ubuntu3.8+esm2
Ubuntu 14.04 ESM:
libstrongswan                   5.1.2-0ubuntu2.11+esm2
strongswan                      5.1.2-0ubuntu2.11+esm2
In general, a standard system update will make all the necessary changes.
References:
https://ubuntu.com/security/notices/USN-5250-2
https://ubuntu.com/security/notices/USN-5250-1
CVE-2021-45079