CVE Vulnerabilities

CVE-2018-5389

Weak Password Requirements

Published: Sep 06, 2018 | Modified: Nov 21, 2024
CVSS 3.x
5.9
MEDIUM
Source:
NVD
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
CVSS 2.x
4.3 MEDIUM
AV:N/AC:M/Au:N/C:P/I:N/A:N
RedHat/V2
RedHat/V3
5.9 MODERATE
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Ubuntu
LOW

The Internet Key Exchange v1 main mode is vulnerable to offline dictionary or brute force attacks. Reusing a key pair across different versions and modes of IKE could lead to cross-protocol authentication bypasses. It is well known, that the aggressive mode of IKEv1 PSK is vulnerable to offline dictionary or brute force attacks. For the main mode, however, only an online attack against PSK authentication was thought to be feasible. This vulnerability could allow an attacker to recover a weak Pre-Shared Key or enable the impersonation of a victim host or network.

Weakness

The product does not require that users should have strong passwords, which makes it easier for attackers to compromise user accounts.

Affected Software

Name Vendor Start Version End Version
Internet_key_exchange Ietf 1.0 (including) 1.0 (including)
Ipsec-tools Ubuntu bionic *
Ipsec-tools Ubuntu cosmic *
Ipsec-tools Ubuntu disco *
Ipsec-tools Ubuntu esm-apps/bionic *
Ipsec-tools Ubuntu esm-apps/xenial *
Ipsec-tools Ubuntu precise/esm *
Ipsec-tools Ubuntu trusty *
Ipsec-tools Ubuntu xenial *
Isakmpd Ubuntu bionic *
Isakmpd Ubuntu cosmic *
Isakmpd Ubuntu devel *
Isakmpd Ubuntu disco *
Isakmpd Ubuntu eoan *
Isakmpd Ubuntu esm-apps/bionic *
Isakmpd Ubuntu esm-apps/focal *
Isakmpd Ubuntu esm-apps/jammy *
Isakmpd Ubuntu esm-apps/xenial *
Isakmpd Ubuntu focal *
Isakmpd Ubuntu groovy *
Isakmpd Ubuntu hirsute *
Isakmpd Ubuntu impish *
Isakmpd Ubuntu jammy *
Isakmpd Ubuntu trusty *
Isakmpd Ubuntu xenial *
Libreswan Ubuntu bionic *
Libreswan Ubuntu cosmic *
Libreswan Ubuntu devel *
Libreswan Ubuntu disco *
Libreswan Ubuntu eoan *
Libreswan Ubuntu esm-apps/bionic *
Libreswan Ubuntu esm-apps/focal *
Libreswan Ubuntu esm-apps/jammy *
Libreswan Ubuntu focal *
Libreswan Ubuntu groovy *
Libreswan Ubuntu hirsute *
Libreswan Ubuntu impish *
Libreswan Ubuntu jammy *
Strongswan Ubuntu bionic *
Strongswan Ubuntu cosmic *
Strongswan Ubuntu devel *
Strongswan Ubuntu disco *
Strongswan Ubuntu eoan *
Strongswan Ubuntu esm-infra-legacy/trusty *
Strongswan Ubuntu esm-infra/bionic *
Strongswan Ubuntu esm-infra/xenial *
Strongswan Ubuntu fips-updates/bionic *
Strongswan Ubuntu fips-updates/focal *
Strongswan Ubuntu fips-updates/xenial *
Strongswan Ubuntu fips/bionic *
Strongswan Ubuntu fips/focal *
Strongswan Ubuntu fips/xenial *
Strongswan Ubuntu focal *
Strongswan Ubuntu groovy *
Strongswan Ubuntu hirsute *
Strongswan Ubuntu impish *
Strongswan Ubuntu jammy *
Strongswan Ubuntu trusty *
Strongswan Ubuntu trusty/esm *
Strongswan Ubuntu xenial *

Potential Mitigations

  • A product’s design should require adherance to an appropriate password policy. Specific password requirements depend strongly on contextual factors, but it is recommended to contain the following attributes:

  • Depending on the threat model, the password policy may include several additional attributes.

  • See NIST 800-63B [REF-1053] for further information on password requirements.

References