SB2021122134 - Anolis OS update for mailman:2.1 (Anolis OS 8.5) module

Description

This security bulletin contains information about 3 secuirty vulnerabilities.

1) Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG) (CVE-ID: CVE-2021-42096)

The vulnerability allows a remote attacker to brute-force the administrative password.

The vulnerability exists due to a certain csrf_token value is derived from the admin password. A remote attacker can conduct a brute-force attack against that password and gain unauthorized access to the application.

2) Cross-site request forgery (CVE-ID: CVE-2021-42097)

The vulnerability allows a remote attacker to perform cross-site request forgery attacks.

The vulnerability exists due to insufficient validation of the HTTP request origin. A remote attacker can trick the victim to visit a specially crafted web page and take over the admin account, as the csrf_token value is not specific to a single user account.

3) Cross-site request forgery (CVE-ID: CVE-2021-44227)

The vulnerability allows a remote attacker to perform cross-site request forgery attacks.

The vulnerability exists due to insufficient validation of the HTTP request origin. A remote attacker can trick the victim to visit a specially crafted web page and perform arbitrary actions on behalf of the victim on the vulnerable website, such as get a CSRF token and craft an admin request (using that token) to set a new admin password or make other changes.

Remediation

Install update from vendor's website.

References

• https://anas.openanolis.cn/errata/detail/ANSA-2021:0206