README.md

CVE-2021-4034

Precompiled builds for CVE-2021-4034.

Of course you shouldn't trust precompiled builds :)

This release works slightly different: first a minimal shared object is created. This object is packaged into the main binary and dropped upon execution. Musl is used for compilation to minimize dependencies (e.g. specific libc versions maybe?)

Acknowledgements

• Original advisory by Qualys: https://www.qualys.com/2022/01/25/cve-2021-4034/pwnkit.txt
• Berdav's (Davide Berardi) poc: https://github.com/berdav/CVE-2021-4034
• Blasty's ([email protected]) poc: https://haxx.in/files/blasty-vs-pkexec2.c

Binaries

Target	Link
aarch64	cve-2021-4034_aarch64
aarch64_be	cve-2021-4034_aarch64_be
arm-eabi	cve-2021-4034_arm-eabi
arm-eabihf	cve-2021-4034_arm-eabihf
armeb-eabi	cve-2021-4034_armeb-eabi
armeb-eabihf	cve-2021-4034_armeb-eabihf
armel-eabi	cve-2021-4034_armel-eabi
armel-eabihf	cve-2021-4034_armel-eabihf
armv5l-eabi	cve-2021-4034_armv5l-eabi
armv5l-eabihf	cve-2021-4034_armv5l-eabihf
armv6-eabi	cve-2021-4034_armv6-eabi
armv6-eabihf	cve-2021-4034_armv6-eabihf
armv7l-eabihf	cve-2021-4034_armv7l-eabihf
armv7m-eabi	cve-2021-4034_armv7m-eabi
armv7r-eabihf	cve-2021-4034_armv7r-eabihf
i486	cve-2021-4034_i486
i686	cve-2021-4034_i686
m68k	cve-2021-4034_m68k
mips	cve-2021-4034_mips
mips-n32sf	cve-2021-4034_mips-n32sf
mips-sf	cve-2021-4034_mips-sf
mips64	cve-2021-4034_mips64
mips64-n32	cve-2021-4034_mips64-n32
mips64-n32sf	cve-2021-4034_mips64-n32sf
mips64el	cve-2021-4034_mips64el
mips64el-n32	cve-2021-4034_mips64el-n32
mips64el-n32sf	cve-2021-4034_mips64el-n32sf
mipsel	cve-2021-4034_mipsel
mipsel-n32	cve-2021-4034_mipsel-n32
mipsel-n32sf	cve-2021-4034_mipsel-n32sf
mipsel-sf	cve-2021-4034_mipsel-sf
powerpc	cve-2021-4034_powerpc
powerpc-sf	cve-2021-4034_powerpc-sf
powerpc64	cve-2021-4034_powerpc64
powerpc64le	cve-2021-4034_powerpc64le
powerpcle	cve-2021-4034_powerpcle
powerpcle-sf	cve-2021-4034_powerpcle-sf
riscv32	cve-2021-4034_riscv32
riscv64	cve-2021-4034_riscv64
s390x	cve-2021-4034_s390x
x86_64	cve-2021-4034_x86_64
x86_64-x32	cve-2021-4034_x86_64-x32

Building

If you want to build it yourself, modify the targets file to include the architectures that you need. Then run build.sh. You will need Docker.