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Ubuntu 16.04 ESM : strongSwan vulnerability (USN-5250-2)

critical Nessus Plugin ID 157059

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Synopsis

The remote Ubuntu host is missing a security update.

Description

The remote Ubuntu 16.04 LTS host has packages installed that are affected by a vulnerability as referenced in the USN-5250-2 advisory.

 - In strongSwan before 5.9.5, a malicious responder can send an EAP-Success message too early without actually authenticating the client and (in the case of EAP methods with mutual authentication and EAP-only authentication for IKEv2) even without server authentication. (CVE-2021-45079)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Update the affected packages.

See Also

https://ubuntu.com/security/notices/USN-5250-2

Plugin Details

Severity: Critical

ID: 157059

File Name: ubuntu_USN-5250-2.nasl

Version: 1.7

Type: local

Agent: unix

Published: 1/25/2022

Updated: 10/23/2023

Supported Sensors: Agentless Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.0

CVSS v2

Risk Factor: Medium

Base Score: 5.8

Temporal Score: 4.3

Vector: CVSS2#AV:N/AC:M/Au:N/C:P/I:N/A:P

CVSS Score Source: CVE-2021-45079

CVSS v3

Risk Factor: Critical

Base Score: 9.1

Temporal Score: 7.9

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:canonical:ubuntu_linux:16.04:-:esm, p-cpe:/a:canonical:ubuntu_linux:charon-cmd, p-cpe:/a:canonical:ubuntu_linux:libcharon-extra-plugins, p-cpe:/a:canonical:ubuntu_linux:libstrongswan, p-cpe:/a:canonical:ubuntu_linux:libstrongswan-extra-plugins, p-cpe:/a:canonical:ubuntu_linux:libstrongswan-standard-plugins, p-cpe:/a:canonical:ubuntu_linux:strongswan, p-cpe:/a:canonical:ubuntu_linux:strongswan-charon, p-cpe:/a:canonical:ubuntu_linux:strongswan-ike, p-cpe:/a:canonical:ubuntu_linux:strongswan-ikev1, p-cpe:/a:canonical:ubuntu_linux:strongswan-ikev2, p-cpe:/a:canonical:ubuntu_linux:strongswan-libcharon, p-cpe:/a:canonical:ubuntu_linux:strongswan-nm, p-cpe:/a:canonical:ubuntu_linux:strongswan-plugin-af-alg, p-cpe:/a:canonical:ubuntu_linux:strongswan-plugin-agent, p-cpe:/a:canonical:ubuntu_linux:strongswan-plugin-attr-sql, p-cpe:/a:canonical:ubuntu_linux:strongswan-plugin-certexpire, p-cpe:/a:canonical:ubuntu_linux:strongswan-plugin-coupling, p-cpe:/a:canonical:ubuntu_linux:strongswan-plugin-curl, p-cpe:/a:canonical:ubuntu_linux:strongswan-plugin-dhcp, p-cpe:/a:canonical:ubuntu_linux:strongswan-plugin-dnscert, p-cpe:/a:canonical:ubuntu_linux:strongswan-plugin-dnskey, p-cpe:/a:canonical:ubuntu_linux:strongswan-plugin-duplicheck, p-cpe:/a:canonical:ubuntu_linux:strongswan-plugin-eap-aka, p-cpe:/a:canonical:ubuntu_linux:strongswan-plugin-eap-aka-3gpp2, p-cpe:/a:canonical:ubuntu_linux:strongswan-plugin-eap-dynamic, p-cpe:/a:canonical:ubuntu_linux:strongswan-plugin-eap-gtc, p-cpe:/a:canonical:ubuntu_linux:strongswan-plugin-eap-md5, p-cpe:/a:canonical:ubuntu_linux:strongswan-plugin-eap-mschapv2, p-cpe:/a:canonical:ubuntu_linux:strongswan-plugin-eap-peap, p-cpe:/a:canonical:ubuntu_linux:strongswan-plugin-eap-radius, p-cpe:/a:canonical:ubuntu_linux:strongswan-plugin-eap-sim, p-cpe:/a:canonical:ubuntu_linux:strongswan-plugin-eap-sim-file, p-cpe:/a:canonical:ubuntu_linux:strongswan-plugin-eap-sim-pcsc, p-cpe:/a:canonical:ubuntu_linux:strongswan-plugin-eap-simaka-pseudonym, p-cpe:/a:canonical:ubuntu_linux:strongswan-plugin-eap-simaka-reauth, p-cpe:/a:canonical:ubuntu_linux:strongswan-plugin-eap-simaka-sql, p-cpe:/a:canonical:ubuntu_linux:strongswan-plugin-eap-tls, p-cpe:/a:canonical:ubuntu_linux:strongswan-plugin-eap-tnc, p-cpe:/a:canonical:ubuntu_linux:strongswan-plugin-eap-ttls, p-cpe:/a:canonical:ubuntu_linux:strongswan-plugin-error-notify, p-cpe:/a:canonical:ubuntu_linux:strongswan-plugin-farp, p-cpe:/a:canonical:ubuntu_linux:strongswan-plugin-fips-prf, p-cpe:/a:canonical:ubuntu_linux:strongswan-plugin-gcrypt, p-cpe:/a:canonical:ubuntu_linux:strongswan-plugin-gmp, p-cpe:/a:canonical:ubuntu_linux:strongswan-plugin-ipseckey, p-cpe:/a:canonical:ubuntu_linux:strongswan-plugin-ldap, p-cpe:/a:canonical:ubuntu_linux:strongswan-plugin-led, p-cpe:/a:canonical:ubuntu_linux:strongswan-plugin-load-tester, p-cpe:/a:canonical:ubuntu_linux:strongswan-plugin-lookip, p-cpe:/a:canonical:ubuntu_linux:strongswan-plugin-mysql, p-cpe:/a:canonical:ubuntu_linux:strongswan-plugin-ntru, p-cpe:/a:canonical:ubuntu_linux:strongswan-plugin-openssl, p-cpe:/a:canonical:ubuntu_linux:strongswan-plugin-pgp, p-cpe:/a:canonical:ubuntu_linux:strongswan-plugin-pkcs11, p-cpe:/a:canonical:ubuntu_linux:strongswan-plugin-pubkey, p-cpe:/a:canonical:ubuntu_linux:strongswan-plugin-radattr, p-cpe:/a:canonical:ubuntu_linux:strongswan-plugin-soup, p-cpe:/a:canonical:ubuntu_linux:strongswan-plugin-sql, p-cpe:/a:canonical:ubuntu_linux:strongswan-plugin-sqlite, p-cpe:/a:canonical:ubuntu_linux:strongswan-plugin-sshkey, p-cpe:/a:canonical:ubuntu_linux:strongswan-plugin-systime-fix, p-cpe:/a:canonical:ubuntu_linux:strongswan-plugin-unbound, p-cpe:/a:canonical:ubuntu_linux:strongswan-plugin-unity, p-cpe:/a:canonical:ubuntu_linux:strongswan-plugin-whitelist, p-cpe:/a:canonical:ubuntu_linux:strongswan-plugin-xauth-eap, p-cpe:/a:canonical:ubuntu_linux:strongswan-plugin-xauth-generic, p-cpe:/a:canonical:ubuntu_linux:strongswan-plugin-xauth-noauth, p-cpe:/a:canonical:ubuntu_linux:strongswan-plugin-xauth-pam, p-cpe:/a:canonical:ubuntu_linux:strongswan-pt-tls-client, p-cpe:/a:canonical:ubuntu_linux:strongswan-starter, p-cpe:/a:canonical:ubuntu_linux:strongswan-tnc-base, p-cpe:/a:canonical:ubuntu_linux:strongswan-tnc-client, p-cpe:/a:canonical:ubuntu_linux:strongswan-tnc-ifmap, p-cpe:/a:canonical:ubuntu_linux:strongswan-tnc-pdp, p-cpe:/a:canonical:ubuntu_linux:strongswan-tnc-server

Required KB Items: Host/cpu, Host/Ubuntu, Host/Ubuntu/release, Host/Debian/dpkg-l

Exploit Ease: No known exploits are available

Patch Publication Date: 1/24/2022

Vulnerability Publication Date: 1/24/2022

Reference Information

CVE: CVE-2021-45079

USN: 5250-2