FreeBSD e1000 Device Model stack-based overflow

Summaryinfo

A vulnerability categorized as critical has been discovered in FreeBSD. The impacted element is an unknown function of the component e1000 Device Model. Such manipulation leads to stack-based overflow. This vulnerability is listed as CVE-2022-23087. There is no available exploit. A patch should be applied to remediate this issue.

Detailsinfo

A vulnerability was found in FreeBSD (Operating System) (affected version unknown). It has been rated as critical. Affected by this issue is an unknown functionality of the component e1000 Device Model. The manipulation with an unknown input leads to a stack-based overflow vulnerability. Using CWE to declare the problem leads to CWE-121. A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function). Impacted is confidentiality, integrity, and availability. CVE summarizes:

The e1000 network adapters permit a variety of modifications to an Ethernet packet when it is being transmitted. These include the insertion of IP and TCP checksums, insertion of an Ethernet VLAN header, and TCP segmentation offload ("TSO"). The e1000 device model uses an on-stack buffer to generate the modified packet header when simulating these modifications on transmitted packets. When checksum offload is requested for a transmitted packet, the e1000 device model used a guest-provided value to specify the checksum offset in the on-stack buffer. The offset was not validated for certain packet types. A misbehaving bhyve guest could overwrite memory in the bhyve process on the host, possibly leading to code execution in the host context. The bhyve process runs in a Capsicum sandbox, which (depending on the FreeBSD version and bhyve configuration) limits the impact of exploiting this issue.

The weakness was presented 02/15/2024 by Mehdi Talbi. The advisory is available at security.freebsd.org. This vulnerability is handled as CVE-2022-23087 since 01/10/2022. The technical details are unknown and an exploit is not available.

Applying a patch is able to eliminate this problem.

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

• Operating System

Name

• FreeBSD

License

• open-source

Website

• Product: https://www.freebsd.org/

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