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CVE-2022-23092— Missing bounds check in 9p message handling

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存在安全漏洞。攻击者利用该漏洞通过9p消息处理触发FreeBSD的缓冲区溢出，以触发拒绝服务，并可能在主机系统上运行代码。

AI Predicted 7.5 Difficulty: Hard EPSS 0.65% · P50

Possible ATT&CK Techniques 1 AI

T1203 · Exploitation for Client Execution
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I. Basic Information for CVE-2022-23092

Vulnerability Information
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Vulnerability Title
Missing bounds check in 9p message handling
Source: CVE Program / CVE List V5
Vulnerability Description
The implementation of lib9p's handling of RWALK messages was missing a bounds check needed when unpacking the message contents. The missing check means that the receipt of a specially crafted message will cause lib9p to overwrite unrelated memory. The bug can be triggered by a malicious bhyve guest kernel to overwrite memory in the bhyve(8) process. This could potentially lead to user-mode code execution on the host, subject to bhyve's Capsicum sandbox.
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 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
FreeBSD是FreeBSD基金会的一套类Unix操作系统。 FreeBSD存在安全漏洞。攻击者利用该漏洞通过9p消息处理触发FreeBSD的缓冲区溢出，以触发拒绝服务，并可能在主机系统上运行代码。
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-RELEASE ~ p1 -

II. Public POCs for CVE-2022-23092

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III. Intelligence Information for CVE-2022-23092

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Vendor Advisories for CVE-2022-23092 (1)

Other References for CVE-2022-23092 (1)

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

CVE-2022-23093 Stack overflow in ping(8)
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-2022-23087 Bhyve e82545 device emulation out-of-bounds write
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-2022-23092

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