Zyxel VMG8825-T50K up to 5.50(ABOM.8)C0 MAC Address Parser memory corruption

Summaryinfo

A vulnerability was found in Zyxel VMG8825-T50K up to 5.50(ABOM.8)C0. It has been classified as critical. The affected element is an unknown function of the component MAC Address Parser. The manipulation leads to memory corruption. This vulnerability is traded as CVE-2024-38268. It is possible to initiate the attack remotely. There is no exploit available.

Detailsinfo

A vulnerability was found in Zyxel VMG8825-T50K up to 5.50(ABOM.8)C0 and classified as critical. This issue affects an unknown code block of the component MAC Address Parser. The manipulation with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. Impacted is availability. The summary by CVE is:

An improper restriction of operations within the bounds of a memory buffer in the MAC address parser of the Zyxel VMG8825-T50K firmware versions through 5.50(ABOM.8)C0 could allow an authenticated attacker with administrator privileges to cause potential memory corruptions, resulting in a thread crash on an affected device.

It is possible to read the advisory at zyxel.com. The identification of this vulnerability is CVE-2024-38268 since 06/12/2024. The exploitation is known to be easy. The attack may be initiated remotely. Additional levels of successful authentication are needed for exploitation. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 09/30/2024).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Vendor

• Zyxel

Name

• VMG8825-T50K

Version

• 5.50(ABOM.8)C0

License

• commercial

Website

• Vendor: https://www.zyxel.com/

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