SB2019061907 - Multiple vulnerabilities in Samba

Description

This security bulletin contains information about 2 secuirty vulnerabilities.

1) NULL pointer dereference (CVE-ID: CVE-2019-12435)

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

The vulnerability exists due to a NULL pointer dereference error within the DNS management server (dnsserver) RPC pipe. A remote authenticated user can perform denial of service (DoS) attack against the AD DC server.

2) NULL pointer dereference (CVE-ID: CVE-2019-12436)

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

The vulnerability exists due to a NULL pointer dereference error when processinf LDAP search queries. A remote authenticated user can send a specially crafted request to the affected AD DC LDAP server and perform a denial of service (DoS) attack.

Remediation

Install update from vendor's website.

References

• https://www.samba.org/samba/security/CVE-2019-12435.html
• https://www.samba.org/samba/security/CVE-2019-12436.html