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FreeBSD: VID-26B1100A-5A27-11ED-ABFE-29AC76EC31B5 (CVE-2022-41716): go -- syscall, os/exec: unsanitized NUL in environment variables

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FreeBSD: VID-26B1100A-5A27-11ED-ABFE-29AC76EC31B5 (CVE-2022-41716): go -- syscall, os/exec: unsanitized NUL in environment variables

Severity
4
CVSS
(AV:L/AC:M/Au:N/C:P/I:P/A:P)
Published
10/17/2022
Created
11/08/2022
Added
11/04/2022
Modified
11/11/2022

Description

Due to unsanitized NUL values, attackers may be able to maliciously set environment variables on Windows. In syscall.StartProcess and os/exec.Cmd, invalid environment variable values containing NUL values are not properly checked for. A malicious environment variable value can exploit this behavior to set a value for a different environment variable. For example, the environment variable string "A=B\x00C=D" sets the variables "A=B" and "C=D".

Solution(s)

  • freebsd-upgrade-package-go118
  • freebsd-upgrade-package-go119

References

  • CVE-2022-41716

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