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[CVE-2021-3156] Exploiting Sudo Heap Overflow On Debian 10

syst3mfailure.io · published 8 February 2021

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Host
https://www.qualys.com/
qualys.com
https://blog.qualys.com/vulnerabilities-research/2021/01/26/cve-2021-3156-heap-based-buffer-overflow-in-sudo-baron-samedit
blog.qualys.com
https://cdimage.debian.org/mirror/cdimage/archive/10.7.0/amd64/iso-dvd/debian-10.7.0-amd64-DVD-1.iso
cdimage.debian.org
https://github.com/pwndbg/pwndbg
github.com
https://www.sudo.ws/dist/sudo-1.8.27.tar.gz
sudo.ws
https://github.com/bminor/glibc/archive/glibc-2.28.zip
github.com
https://github.com/sudo-project/sudo/blob/SUDO_1_8_27/src/sudo.c
github.com
https://github.com/sudo-project/sudo/blob/SUDO_1_8_27/plugins/sudoers/sudoers.c
github.com
https://www.openwall.com/lists/oss-security/2021/01/26/3
openwall.com
https://github.com/sudo-project/sudo/blob/SUDO_1_8_27/plugins/sudoers/parse.c
github.com
https://guix.gnu.org/manual/en/html_node/Name-Service-Switch.html
guix.gnu.org
https://www.gnu.org/software/libc/manual/html_node/NSS-Basics.html
gnu.org
https://www.gnu.org/software/libc/manual/html_node/NSS-Module-Names.html
gnu.org
https://elixir.bootlin.com/glibc/glibc-2.28/source/nss/nsswitch.c
elixir.bootlin.com
https://elixir.bootlin.com/glibc/glibc-2.28/source/elf/dl-libc.c
elixir.bootlin.com
https://syst3mfailure.github.io/ret2dl_resolve
syst3mfailure.github.io
https://elixir.bootlin.com/glibc/glibc-2.28/source/nss/nsswitch.h
elixir.bootlin.com
https://elixir.bootlin.com/glibc/glibc-2.28/source/locale/setlocale.c
elixir.bootlin.com
https://pubs.opengroup.org/onlinepubs/7908799/xbd/envvar.html
pubs.opengroup.org
https://github.com/0xdevil/CVE-2021-3156
github.com
https://www.gnu.org/software/libc/manual/html_node/Name-Service-Switch.html
gnu.org