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CVE-2022-23087— Bhyve e82545 device emulation out-of-bounds write

Quick assessment

Affected
FreeBSD FreeBSD
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

FreeBSD是Freebsd基金会的一套类Unix操作系统。 FreeBSD存在缓冲区错误漏洞，该漏洞源于bhyve（8）虚拟机监控程序中e1000网络适配器的边界错误。远程攻击者利用该漏洞在目标系统上执行任意代码。

AI Predicted 8.4 Difficulty: Moderate EPSS 0.21% · P10
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I. Basic Information for CVE-2022-23087

Vulnerability Information
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Vulnerability Title
Bhyve e82545 device emulation out-of-bounds write
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
FreeBSD 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
FreeBSD是Freebsd基金会的一套类Unix操作系统。 FreeBSD存在缓冲区错误漏洞，该漏洞源于bhyve（8）虚拟机监控程序中e1000网络适配器的边界错误。远程攻击者利用该漏洞在目标系统上执行任意代码。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
FreeBSD FreeBSD 13.1-RC1 ~ p1 -

II. Public POCs for CVE-2022-23087

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III. Intelligence Information for CVE-2022-23087

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Other References for CVE-2022-23087 (1)

Same Patch Batch · FreeBSD · 2024-02-15 · 12 CVEs total

CVE-2022-23093 Stack overflow in ping(8)
CVE-2022-23092 Missing bounds check in 9p message handling
CVE-2022-23091 Memory disclosure by stale virtual memory mapping
CVE-2022-23090 AIO credential reference count leak
CVE-2022-23089 Out of bound read in elf_note_prpsinfo()
CVE-2022-23088 802.11 heap buffer overflow
CVE-2022-23086 mpr/mps/mpt driver ioctl heap out-of-bounds write
CVE-2022-23085 Potential jail escape vulnerabilities in netmap
CVE-2022-23084 Potential jail escape vulnerabilities in netmap
CVE-2024-25941 jail(2) information leak
CVE-2024-25940 bhyveload(8) host file access

IV. Related Vulnerabilities

Same product: FreeBSD
Same vendor: FreeBSD

V. Comments for CVE-2022-23087

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