SB2023052337 - SUSE update for openvswitch

Description

This security bulletin contains information about 3 secuirty vulnerabilities.

1) Out-of-bounds read (CVE-ID: CVE-2022-4337)

The vulnerability allows a remote attacker to gain access to potentially sensitive information or perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary condition when parsing Auto Attach TLV. A remote attacker can send specially crafted LLDP messages to the affected system, trigger an out-of-bounds read error and read contents of memory on the system of perform a denial of service (DoS) attack.

2) Integer underflow (CVE-ID: CVE-2022-4338)

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to integer underflow when parsing Auto Attach TLV. A remote attacker can send specially crafted LLDP messages to the affected system, trigger an integer underflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Note, by default interfaces are not configured to process LLDP messages.

3) Input validation error (CVE-ID: CVE-2023-1668)

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

The vulnerability exists due to insufficient validation of user-supplied input when processing IP packets. A remote attacker can send specially crafted IP packets with "ip proto" set to "0" and perform a denial of service (DoS) attack.

Successful exploitation of the vulnerability requires that flow rules contain 'set' actions on other fields in the IP protocol header.

Remediation

Install update from vendor's website.

References

• https://www.suse.com/support/update/announcement/2023/suse-su-20232274-1/