SB2022040603 - Multiple vulnerabilities in FreeBSD

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Main Vulnerability Database SB2022040603

SB2022040603 - Multiple vulnerabilities in FreeBSD

Published: April 6, 2022 Updated: September 21, 2022

Security Bulletin ID SB2022040603
Severity
Medium
Patch available
YES
Number of vulnerabilities 6
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

Medium 50% Low 50%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 6 secuirty vulnerabilities.


1) Time-of-check Time-of-use (TOCTOU) Race Condition (CVE-ID: CVE-2022-23084)

The vulnerability allows a local user to bypass implemented security restrictions.

The vulnerability exists due to a race condition in netmap. The total size of the user-provided nmreq to nmreq_copyin() function was first computed and then trusted during the copyin operation. A local user can trigger a race condition, which can lead to memory corruption and code execution. The vulnerability can be used to escape jail environment.


2) Integer overflow (CVE-ID: CVE-2022-23085)

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to integer overflow within the nmreq_copyin() function in netmap. A local user can trigger integer overflow and execute arbitrary code with elevated privileges. The vulnerability can be used to escape jail environment.


3) Buffer overflow (CVE-ID: CVE-2022-23087)

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error within the e1000 network adapter implementation in bhyve(8) hypervisor. A remote attacker with access to the guest OS can send specially crafted traffic via the affected adapter, trigger memory corruption and execute arbitrary code on the hypervisor.


4) Heap-based buffer overflow (CVE-ID: CVE-2022-23086)

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a boundary error in mpr, mps, and mpt disk collector drivers. A local user can run a specially crafted program to trigger a heap-based buffer overflow and execute arbitrary code on the system with elevated privileges.



5) Heap-based buffer overflow (CVE-ID: CVE-2022-23088)

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error within the 802.11 beacon handling routine in FreeBSD Wi-Fi client. A remote attacker with control over the Wi-Fi hotspot can send specially beacon crafted frames to the FreeBSD Wi-Fi client in scanning mode, trigger a heap-based buffer overflow and execute arbitrary code on the system.


6) Buffer overflow (CVE-ID: CVE-2018-25032)

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of user-supplied input when compressing data. A remote attacker can pass specially crafted input to the application, trigger memory corruption and perform a denial of service (DoS) attack.


Remediation

Install update from vendor's website.

References