SB2023062978 - Anolis OS update for dnsmasq

Description

This security bulletin contains information about 2 secuirty vulnerabilities.

1) Use-after-free (CVE-ID: CVE-2022-0934)

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a use-after-free error when handling DHCPv6 requests. A remote attacker can send specially crafted DHCPv6 packets to the affected application, trigger a use-after-free error and perform a denial of service (DoS) attack.

2) Resource exhaustion (CVE-ID: CVE-2023-28450)

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to application does not properly perform fragmentation of UDP packets. A remote attacker can trigger resource exhaustion by sending overly large DNS UDP packets.

Remediation

Install update from vendor's website.

References

• https://anas.openanolis.cn/errata/detail/ANSA-2023:0324