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CVEs-PoC/2021/CVE-2021-3156.md
0xMarcio cb00e1339f Update CVE list 2025-09-29 21:09
2025-09-29 21:09:30 +02:00

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### [CVE-2021-3156](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3156)
![](https://img.shields.io/static/v1?label=Product&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=n%2Fa%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=n%2Fa&color=brightgreen)
### Description
Sudo before 1.9.5p2 contains an off-by-one error that can result in a heap-based buffer overflow, which allows privilege escalation to root via "sudoedit -s" and a command-line argument that ends with a single backslash character.
### POC
#### Reference
- http://packetstormsecurity.com/files/161160/Sudo-Heap-Based-Buffer-Overflow.html
- http://packetstormsecurity.com/files/161230/Sudo-Buffer-Overflow-Privilege-Escalation.html
- http://packetstormsecurity.com/files/161270/Sudo-1.9.5p1-Buffer-Overflow-Privilege-Escalation.html
- http://packetstormsecurity.com/files/161293/Sudo-1.8.31p2-1.9.5p1-Buffer-Overflow.html
- http://packetstormsecurity.com/files/176932/glibc-syslog-Heap-Based-Buffer-Overflow.html
- http://seclists.org/fulldisclosure/2024/Feb/3
- http://www.openwall.com/lists/oss-security/2024/01/30/6
- http://www.openwall.com/lists/oss-security/2024/01/30/8
- https://kc.mcafee.com/corporate/index?page=content&id=SB10348
- https://www.oracle.com//security-alerts/cpujul2021.html
- https://www.oracle.com/security-alerts/cpuapr2022.html
- https://www.oracle.com/security-alerts/cpuoct2021.html
#### Github
- https://github.com/0day404/vulnerability-poc
- https://github.com/0kraven/MalDevJournal
- https://github.com/0x06K/MalDevJournal
- https://github.com/0x4ndy/clif
- https://github.com/0x7183/CVE-2021-3156
- https://github.com/0x7n6/OSCP
- https://github.com/0xMarcio/cve
- https://github.com/0xStrygwyr/OSCP-Guide
- https://github.com/0xZipp0/OSCP
- https://github.com/0xdevil/CVE-2021-3156
- https://github.com/0xsakthi/my-pentest-notes
- https://github.com/0xsyr0/OSCP
- https://github.com/10cks/intranet-pentest
- https://github.com/1N53C/CVE-2021-3156-PoC
- https://github.com/20142995/sectool
- https://github.com/2lambda123/CVE-mitre
- https://github.com/2lambda123/Falco-bypasses
- https://github.com/2lambda123/Windows10Exploits
- https://github.com/30579096/vCenterVulns
- https://github.com/4xura/Fuzzing-Sudo
- https://github.com/AMatheusFeitosaM/OSCP-Cheat
- https://github.com/ARGOeu-Metrics/secmon-probes
- https://github.com/ARGOeu/secmon-probes
- https://github.com/ARPSyndicate/cve-scores
- https://github.com/ARPSyndicate/cvemon
- https://github.com/AbdoFarid1/R00tKeep3r
- https://github.com/AbdullahRizwan101/Baron-Samedit
- https://github.com/Al1ex/LinuxEelvation
- https://github.com/Andromeda254/cve
- https://github.com/ArrestX/--POC
- https://github.com/Ashish-dawani/CVE-2021-3156-Patch
- https://github.com/AurelienADVANCED/ProjetIceCream
- https://github.com/BLACKHAT-SSG/MindMaps2
- https://github.com/Bad3r/CVE-2021-3156-without-ip-command
- https://github.com/BearCat4/CVE-2021-3156
- https://github.com/Bubleh21/CVE-2021-3156
- https://github.com/CVEDB/PoC-List
- https://github.com/CVEDB/awesome-cve-repo
- https://github.com/CVEDB/top
- https://github.com/ClassBluer/Exploit_Tools
- https://github.com/Coldplay1517/Middleware-Vulnerability-detection-master
- https://github.com/CptGibbon/CVE-2021-3156
- https://github.com/CrackerCat/cve-2021-3157
- https://github.com/CracksoftShlok/LinuxPrivEscResearch
- https://github.com/CyberCommands/CVE-2021-3156
- https://github.com/CyberCommands/exploit-sudoedit
- https://github.com/DASICS-ICT/DASICS-CVE-2021-3156
- https://github.com/DDayLuong/CVE-2021-3156
- https://github.com/Daniel-Ayz/OSCP
- https://github.com/DanielAzulayy/CTF-2021
- https://github.com/DanielShmu/OSCP-Cheat-Sheet
- https://github.com/DarkFunct/CVE_Exploits
- https://github.com/Disturbante/Linux-Pentest
- https://github.com/Drakfunc/CVE_Exploits
- https://github.com/DrewSC13/Linpeas
- https://github.com/EGI-Federation/SVG-advisories
- https://github.com/EdgeSecurityTeam/Vulnerability
- https://github.com/EnriqueSanchezdelVillar/NotesHck
- https://github.com/EthicalSecurity-Agency/Y3A-CVE-2021-3156
- https://github.com/EvansWJ-dev/KaliMisc
- https://github.com/EvilAnne/2021-Read-article
- https://github.com/Exodusro/CVE-2021-3156
- https://github.com/Faizan-Khanx/OSCP
- https://github.com/Floodnut/paper_docs_study
- https://github.com/Floodnut/papers_documents_Analysis
- https://github.com/GhostTroops/TOP
- https://github.com/Gutem/scans-exploits
- https://github.com/H4niz/oscp-note
- https://github.com/HadessCS/Awesome-Privilege-Escalation
- https://github.com/HuzaifaTariqAfzalKhan/CVE-Exploit-Research-Development-ITSOLERA
- https://github.com/HynekPetrak/HynekPetrak
- https://github.com/JERRY123S/all-poc
- https://github.com/JMontRod/Pruebecita
- https://github.com/JeanR12/Persistence-Script-Script-Exploit-
- https://github.com/JlSakuya/Linux-Privilege-Escalation-Exploits
- https://github.com/Jung2023/XSS-CTF
- https://github.com/Jung2023/portfolio_CTF
- https://github.com/KayCHENvip/vulnerability-poc
- https://github.com/Kiosec/Linux-Exploitation
- https://github.com/Kiprey/Skr_Learning
- https://github.com/Lazykakarot1/Learn-365
- https://github.com/LiveOverflow/pwnedit
- https://github.com/Ly0nt4r/OSCP
- https://github.com/Maalfer/Sudo-CVE-2021-3156
- https://github.com/Maikefee/linux-exploit-hunter
- https://github.com/Meowmycks/OSCPprep-Cute
- https://github.com/Meowmycks/OSCPprep-Sar
- https://github.com/Meowmycks/OSCPprep-hackme1
- https://github.com/Mhackiori/CVE-2021-3156
- https://github.com/Miraitowa70/POC-Notes
- https://github.com/Morton-L/BoltWrt
- https://github.com/Morton-Li/BoltWrt
- https://github.com/Mr-xn/Penetration_Testing_POC
- https://github.com/NaInSec/CVE-PoC-in-GitHub
- https://github.com/NeQuissimus/nixos-vuln
- https://github.com/Neiver97/FinalProject-SO-20241
- https://github.com/Nerix-code/hello
- https://github.com/Network-Sec/bin-tools-pub
- https://github.com/Nokialinux/CVE-2021-3156
- https://github.com/NormalPerson001/sudo-1.8.31
- https://github.com/Offensive-Penetration-Security/OPSEC-Hall-of-fame
- https://github.com/OrangeGzY/security-research-learning
- https://github.com/Ostorlab/KEV
- https://github.com/Ostorlab/known_exploited_vulnerbilities_detectors
- https://github.com/PhuketIsland/CVE-2021-3156-centos7
- https://github.com/PsychoH4x0r/Unknown1337-Auto-Root-
- https://github.com/PuddinCat/GithubRepoSpider
- https://github.com/PurpleOzone/PE_CVE-CVE-2021-3156
- https://github.com/PwnAwan/MindMaps2
- https://github.com/Q4n/CVE-2021-3156
- https://github.com/Rai2en/OSCP-Notes
- https://github.com/ReflectedThanatos/OSCP-cheatsheet
- https://github.com/RodricBr/CVE-2021-3156
- https://github.com/Ruviixx/proyecto-ps
- https://github.com/Rvn0xsy/CVE-2021-3156-plus
- https://github.com/S3cur3Th1sSh1t/My-starred-Repositories
- https://github.com/SPXcz/IC1_projekt
- https://github.com/SYRTI/POC_to_review
- https://github.com/Sabhareesh2002/Cat-picture---Tryhackme
- https://github.com/SamTruss/LMU-CVE-2021-3156
- https://github.com/SantiagoSerrao/ScannerCVE-2021-3156
- https://github.com/SantoriuHen/NotesHck
- https://github.com/Sebastianbedoya25/CVE-2021-3156
- https://github.com/Self-Study-Committee/Skr_Learning
- https://github.com/SenukDias/OSCP_cheat
- https://github.com/SexyBeast233/SecBooks
- https://github.com/Shuhaib88/Baron-Samedit-Heap-Buffer-Overflow-CVE-2021-3156
- https://github.com/SirElmard/ethical_hacking
- https://github.com/Sornphut/CVE-2021-3156-Heap-Based-Buffer-Overflow-in-Sudo-Baron-Samedit-
- https://github.com/Spektrainfiniti/MP
- https://github.com/Superliverbun/cve-2021-3156-
- https://github.com/TBHIDK24/MalDevJournal
- https://github.com/TBHIDK57/MalDevJournal
- https://github.com/Technetium1/stars
- https://github.com/TheFlash2k/CVE-2021-3156
- https://github.com/TheSerialiZator/CTF-2021
- https://github.com/Threekiii/Awesome-POC
- https://github.com/Timirepo/CVE_Exploits
- https://github.com/TopskiyPavelQwertyGang/Review.CVE-2021-3156
- https://github.com/Toufupi/CVE_Collection
- https://github.com/Trivialcorgi/Proyecto-Prueba-PPS
- https://github.com/TrojanAZhen/Self_Back
- https://github.com/Typical0day/CVE-2021-3156
- https://github.com/VishuGahlyan/OSCP
- https://github.com/VishuGahlyan/OSCP-Notes
- https://github.com/Whiteh4tWolf/Sudo-1.8.31-Root-Exploit
- https://github.com/Whiteh4tWolf/xcoderootsploit
- https://github.com/WhooAmii/POC_to_review
- https://github.com/WilliamQ28/Worst-autoLinPrivesc
- https://github.com/X-The-Mystic/xframe
- https://github.com/XiaomingX/awesome-poc-for-red-team
- https://github.com/XinLiu2025/openkylinsat
- https://github.com/Y3A/CVE-2021-3156
- https://github.com/ZTK-009/CVE-2021-3156
- https://github.com/ZacharyKirkeby/CVE_a_Week
- https://github.com/ZammelSofien/Exploiting-GetSimple-3.3.15
- https://github.com/ZartoshtSakari/ZartoshtSakari
- https://github.com/a-roshbaik/Linux-Privilege-Escalation-Exploits
- https://github.com/aasphixie/aasphixie.github.io
- https://github.com/abedra/securing_security_software
- https://github.com/adnan-kutay-yuksel/tryhackme-all-rooms-database
- https://github.com/ajtech-hue/CVE-2021-3156-Mitigation-ShellScript-Build
- https://github.com/akyuksel/tryhackme-all-rooms-database
- https://github.com/amanszpapaya/MacPer
- https://github.com/anquanscan/sec-tools
- https://github.com/anukiii/Malware_Project_team3
- https://github.com/apachecn-archive/Middleware-Vulnerability-detection
- https://github.com/apogiatzis/docker-CVE-2021-3156
- https://github.com/aquahubtest4/r4j
- https://github.com/aquahubtest5/r4j
- https://github.com/arvindshima/CVE-2021-3156
- https://github.com/asepsaepdin/CVE-2021-3156
- https://github.com/axelmierczuk/privesc
- https://github.com/b3nn3tt/Kali-Linux-Setup-Tool
- https://github.com/baka9moe/CVE-2021-3156-Exp
- https://github.com/baka9moe/CVE-2021-3156-TestReport
- https://github.com/barebackbandit/CVE-2021-3156
- https://github.com/bbugdigger/Vuln-Analysis
- https://github.com/bc29ea3c101054baa1429ffc2edba4ae/sigma_detection_rules
- https://github.com/beruangsalju/LocalPrivilegeEscalation
- https://github.com/bijaysenihang/sigma_detection_rules
- https://github.com/binw2018/CVE-2021-3156-SCRIPT
- https://github.com/blackberry/Falco-bypasses
- https://github.com/blasty/CVE-2021-3156
- https://github.com/bollwarm/SecToolSet
- https://github.com/bsauce/kernel-exploit-factory
- https://github.com/bsauce/kernel-security-learning
- https://github.com/capturingcats/CVE-2021-3156
- https://github.com/cbass12321/OSCP-Cheat-Sheets
- https://github.com/chenaotian/CVE-2021-3156
- https://github.com/chmod750/awesome-repositories
- https://github.com/christian-byrne/custom-nodes-security-scan
- https://github.com/christian-byrne/node-sec-scan
- https://github.com/cyberanand1337x/bug-bounty-2022
- https://github.com/cybercrazetech/Employee-walkthrough
- https://github.com/d3c3ptic0n/CVE-2021-3156
- https://github.com/d4n-sec/d4n-sec.github.io
- https://github.com/d4redevilx/OSCP-CheetSheet
- https://github.com/developer3000S/PoC-in-GitHub
- https://github.com/dharanirajan676/openVAS_Elevatelabs_task3
- https://github.com/diannaofengzi/datura-ctf
- https://github.com/dinhbaouit/CVE-2021-3156
- https://github.com/direwolf314/prescup_cheatsheet
- https://github.com/donghyunlee00/CVE-2021-3156
- https://github.com/dschwads/threattemp
- https://github.com/duedahl/sudoedit_exploit
- https://github.com/duongdz96/CVE-2021-3156-main
- https://github.com/dyne/sud
- https://github.com/e-hakson/OSCP
- https://github.com/eeenvik1/kvvuctf_24
- https://github.com/elbee-cyber/CVE-2021-3156-PATCHER
- https://github.com/eljosep/OSCP-Guide
- https://github.com/exfilt/CheatSheet
- https://github.com/fazilbaig1/oscp
- https://github.com/fei9747/LinuxEelvation
- https://github.com/felixfu59/shocker-attack
- https://github.com/fkie-cad/nvd-json-data-feeds
- https://github.com/flex0geek/cves-exploits
- https://github.com/foyjog/shocker-attack
- https://github.com/freeFV/CVE-2021-3156
- https://github.com/freitzzz/tpas-binary-exploitation
- https://github.com/gamblingmaster2020/vCenterExp
- https://github.com/gglessner/Rocky
- https://github.com/gmldbd94/cve-2021-3156
- https://github.com/go-bi/go-bi-soft
- https://github.com/goEnum/goEnum
- https://github.com/goEnumAdmin/goEnum
- https://github.com/greg-workspace/my_sudo_heap_overflow_exploit
- https://github.com/grng3r/rs_exploits
- https://github.com/h0pe-ay/Vulnerability-Reproduction
- https://github.com/hac425xxx/heap-exploitation-in-real-world
- https://github.com/halissha/CVE-2021-3156
- https://github.com/harsh-bothra/learn365
- https://github.com/hilbix/suid
- https://github.com/hktalent/TOP
- https://github.com/hktalent/bug-bounty
- https://github.com/huike007/penetration_poc
- https://github.com/huisetiankong478/penetration_poc
- https://github.com/hungnqdz/cve
- https://github.com/hycheng15/CVE-2021-3156
- https://github.com/iandrade87br/OSCP
- https://github.com/jagat-singh-chaudhary/bugbounty-365-days
- https://github.com/jbmihoub/all-poc
- https://github.com/jenriquezv/PEN-200-OSCP
- https://github.com/jitmondal1/OSCP
- https://github.com/jm33-m0/CVE-2021-3156
- https://github.com/joaomagfreitas/tpas-binary-exploitation
- https://github.com/joshmcorreia/SDSU_Cyber_Security_Red_Team
- https://github.com/joydo/CVE-Writeups
- https://github.com/k0mi-tg/CVE-POC
- https://github.com/kal1gh0st/CVE-2021-3156
- https://github.com/kaosagnt/ansible-everyday
- https://github.com/kasperyhr/CSCI620_FinalProject
- https://github.com/ker2x/DearDiary
- https://github.com/kernelzeroday/CVE-2021-3156-Baron-Samedit
- https://github.com/kevinnivekkevin/3204_coursework_1
- https://github.com/kgwanjala/oscp-cheatsheet
- https://github.com/kldksd/server
- https://github.com/kotikjaroslav/sigma_detection_rules
- https://github.com/kurniawandata/xcoderootsploit
- https://github.com/lions2012/Penetration_Testing_POC
- https://github.com/liqimore/ECE9609-Introduction-to-Hacking
- https://github.com/lmol/CVE-2021-3156
- https://github.com/lockedbyte/CVE-Exploits
- https://github.com/lockedbyte/lockedbyte
- https://github.com/lockedbyte/slides
- https://github.com/lognoz/puppet-freebsd-workstation
- https://github.com/loong576/ansible-production-practice-6
- https://github.com/lovechinacoco/https-github.com-mai-lang-chai-Middleware-Vulnerability-detection
- https://github.com/ltfafei/my_POC
- https://github.com/lucagioacchini/auto-pen-bench
- https://github.com/lukwagoasuman/Technical_Write_Up
- https://github.com/lypd0/CVE-2021-3156-checker
- https://github.com/ma7moudShaaban/R00tKeep3r
- https://github.com/makoto56/penetration-suite-toolkit
- https://github.com/malwaremily/infosec-news-briefs
- https://github.com/manas3c/CVE-POC
- https://github.com/manoj3768/OSCP
- https://github.com/mbcrump/CVE-2021-3156
- https://github.com/meowhua15/CVE-2021-3156
- https://github.com/migueltc13/KoTH-Tools
- https://github.com/mitinarseny/hse_facl
- https://github.com/mr-r3b00t/CVE-2021-3156
- https://github.com/mrkronkz/exp
- https://github.com/mstxq17/SecurityArticleLogger
- https://github.com/murchie85/twitterCyberMonitor
- https://github.com/musergi/CVE-2021-3156
- https://github.com/mutur4/CVE-2021-3156
- https://github.com/n0-traces/cve_monitor
- https://github.com/neolin-ms/LinuxDocLinks
- https://github.com/nexcess/sudo_cve-2021-3156
- https://github.com/nitishbadole/oscp-note-3
- https://github.com/njahrckstr/exploits-
- https://github.com/nobodyatall648/CVE-2021-3156
- https://github.com/nomi-sec/PoC-in-GitHub
- https://github.com/nu11secur1ty/CVE-mitre
- https://github.com/nu11secur1ty/CVE-nu11secur1ty
- https://github.com/nu11secur1ty/Windows10Exploits
- https://github.com/oneoy/CVE-2021-3156
- https://github.com/oneoy/exploits1
- https://github.com/oriolOrnaque/TFG-Binary-exploitation
- https://github.com/oscpname/OSCP_cheat
- https://github.com/parth45/cheatsheet
- https://github.com/password520/CVE-2021-3156
- https://github.com/pathakabhi24/Awesome-C
- https://github.com/paultheal1en/auto_pen_bench_web
- https://github.com/pen4uin/awesome-vulnerability-research
- https://github.com/pen4uin/vulnerability-research
- https://github.com/pen4uin/vulnerability-research-list
- https://github.com/perlun/sudo-1.8.3p1-patched
- https://github.com/ph4ntonn/CVE-2021-3156
- https://github.com/plzheheplztrying/cve_monitor
- https://github.com/pmihsan/Sudo-HeapBased-Buffer-Overflow
- https://github.com/popyue/HackTheBox
- https://github.com/pranjalsharma03/OSCP
- https://github.com/promise2k/OSCP
- https://github.com/puckiestyle/CVE-2021-3156
- https://github.com/pvnovarese/2022-02-enterprise-demo
- https://github.com/pvnovarese/2022-04-enterprise-demo
- https://github.com/pvnovarese/2022-04-suse-demo
- https://github.com/pvnovarese/2022-06-enterprise-demo
- https://github.com/pvnovarese/2022-08-enterprise-demo
- https://github.com/pvnovarese/2022-09-enterprise-demo
- https://github.com/pvnovarese/2023-01-enterprise-demo
- https://github.com/pvnovarese/2023-02-demo
- https://github.com/q77190858/CVE-2021-3156
- https://github.com/qxxxb/ctf_challenges
- https://github.com/r0eXpeR/pentest
- https://github.com/r3k4t/how-to-solve-sudo-heap-based-bufferoverflow-vulnerability
- https://github.com/r4j0x00/exploits
- https://github.com/rahardian-dwi-saputra/TryHackMe-WriteUps
- https://github.com/raulvillalpando/BufferOverflow
- https://github.com/ravibalanraju/vulnerability-reports-case-studies
- https://github.com/realbugdigger/Vuln-Analysis
- https://github.com/redhawkeye/sudo-exploit
- https://github.com/ret2basic/SudoScience
- https://github.com/revanmalang/OSCP
- https://github.com/reverse-ex/CVE-2021-3156
- https://github.com/rfago/tpas-binary-exploitation
- https://github.com/rosariofl/Red-vs-Blue-Project
- https://github.com/s1lver-lining/Starlight
- https://github.com/sandesvitor/simple-ansible-lab
- https://github.com/saucer-man/exploit
- https://github.com/scaryPonens/cve_bot
- https://github.com/schoi1337/dockout
- https://github.com/sereok3/buffer-overflow-writeups
- https://github.com/seyrenus/my-awesome-list
- https://github.com/sharkmoos/Baron-Samedit
- https://github.com/shishirpandey18/CVE-2021-3156
- https://github.com/siddicky/yotjf
- https://github.com/skilian-enssat/datura-ctf
- https://github.com/software-engineering-and-security/cfi-practical-guideline
- https://github.com/soosmile/POC
- https://github.com/sparktsao/auto-pen-bench-study
- https://github.com/stong/CVE-2021-3156
- https://github.com/stong/writing
- https://github.com/stressboi/TA-Samedit
- https://github.com/substing/internal_ctf
- https://github.com/substing/vulnerability_capstone_ctf
- https://github.com/sujallamichhane18/DestroyGPT
- https://github.com/sujallamichhane18/DestroyerGPT
- https://github.com/taielab/awesome-hacking-lists
- https://github.com/tainguyenbp/linux-cve
- https://github.com/teamtopkarl/CVE-2021-3156
- https://github.com/ten-ops/baron-samedit
- https://github.com/teresaweber685/book_list
- https://github.com/thisguyshouldworkforus/ansible
- https://github.com/tnguy21/DDC-Regionals-2024
- https://github.com/trhacknon/Pocingit
- https://github.com/tunjing789/Employee-walkthrough
- https://github.com/txuswashere/OSCP
- https://github.com/tzwlhack/Vulnerability
- https://github.com/uhub/awesome-c
- https://github.com/unauth401/CVE-2021-3156
- https://github.com/usdogu/awesome-stars
- https://github.com/voidlsd/CVE-2021-3156
- https://github.com/weeka10/-hktalent-TOP
- https://github.com/weto91/GitHub_Search_CVE
- https://github.com/whoforget/CVE-POC
- https://github.com/wiiwu959/Pentest-Record
- https://github.com/winterwolf32/CVE-S---Penetration_Testing_POC-
- https://github.com/worawit/CVE-2021-3156
- https://github.com/wsmaxcy/Cat-Pictures-2-Writeup
- https://github.com/wurwur/CVE-2021-3156
- https://github.com/xcode96/REDME
- https://github.com/xhref/OSCP
- https://github.com/xsudoxx/OSCP
- https://github.com/xtaran/sshudo
- https://github.com/xthemystik/xframe
- https://github.com/xuetusummer/Penetration_Testing_POC
- https://github.com/yaunsky/cve-2021-3156
- https://github.com/yifengyou/sudo-1.8.29
- https://github.com/ymrsmns/CVE-2021-3156
- https://github.com/youwizard/CVE-POC
- https://github.com/ypl6/heaplens
- https://github.com/zecool/cve
- https://github.com/zhanpengliu-tencent/medium-cve
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