CVE-2023-45233

The Network Package in EDK2 is vulnerable to an infinite loop exploit when parsing a PadN option within the Destination Options header of IPv6. This flaw allows an unauthorized attacker to gain access and potentially result in a loss of system availability.

The identified vulnerability in EDK2's Network Package poses a moderate risk due to an infinite loop in the Ip6IsOptionValid function, specifically when parsing a PadN option in the Destination Options header of an IPv6 packet. This flaw occurs because the addition of 0x100 to the Offset variable is truncated to a UINT8, resulting in an unmodified Offset. As a consequence of this infinite loop, the affected computer never finishes booting up.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.