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CVE-2021-33909 PoC — Linux kernel 输入验证错误漏洞

Source
Associated Vulnerability
Title:Linux kernel 输入验证错误漏洞 (CVE-2021-33909)
Description:fs/seq_file.c in the Linux kernel 3.16 through 5.13.x before 5.13.4 does not properly restrict seq buffer allocations, leading to an integer overflow, an Out-of-bounds Write, and escalation to root by an unprivileged user, aka CID-8cae8cd89f05.
Description
Exploit code for CVE-2021-33909,Just a dump of removed https://github.com/AmIAHuman/ repo
Readme
# CVE-2021-33909
Exploit code for CVE-2021-33909,Just a dump of removed https://github.com/AmIAHuman/ repo


Sequoia (CVE-2021-33909)

Building

gcc exploit.c -o exploit

Running

"mkdir dir;./exploit $(pwd)/dir".
chmod +x exploit
./exploit


One-Liner

gcc exploit.c -o exploit;chmod +x exploit;./exploit



Credits
https://blog.qualys.com/vulnerabilities-threat-research/2021/07/20/sequoia-a-local-privilege-escalation-vulnerability-in-linuxs-filesystem-layer-cve-2021-33909
https://github.com/AmIAHuman
File Snapshot

[4.0K] /data/pocs/3cb458ed182d272ab4645a09c0b22109317434a5 ├── [6.5K] exploit.c └── [ 506] README.md 0 directories, 2 files
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