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    CVE-2011-2523

    vsftpd 2.3.4 downloaded between 20110630 and 20110703 contains a backdoor which opens a shell on port 6200/tcp.

    Published:Jul 4, 2011
    Last Modified:Nov 21, 2024
    EPS:Nov 27, 2019
    EPSS Score:0.94261
    CVSS Score:9.8

    Affected Products

    Vendor
    Debian
    Product
    Debian Linux
    Vendor
    Vsftpd Project
    Product
    Vsftpd

    Exploits

    https://packetstormsecurity.com/files/102745/VSFTPD-2.3.4-Backdoor-Command-Execution.htmlhttps://packetstormsecurity.com/files/102745/VSFTPD-2.3.4-Backdoor-Command-Execution.htmlhttps://www.exploit-db.com/exploits/49757https://github.com/0xB0y426/CVE-2011-2523-PoChttps://github.com/0xSojalSec/-CVE-2011-2523https://github.com/0xSojalSec/CVE-2011-2523https://github.com/4m3rr0r/CVE-2011-2523-pochttps://github.com/aboubacar70/LAB1-metasploitablehttps://github.com/aish19siddiqua-commits/mtechweek_04https://github.com/alexojocyber/cve-2011-2523-vsftpd-validation-labhttps://github.com/Amirmuhammadmarvi/network-security-labhttps://github.com/AnugiArrawwala/CVE-Researchhttps://github.com/As9xm/BrokenDoor-CVE-2011-2523-https://github.com/avivyap/CVE-2011-2523https://github.com/BolivarJ/CVE-2011-2523https://github.com/brettsm/vsftpd2.3.4-backdoor-exploithttps://github.com/ByteForgeFr/CVE-2011-2523https://github.com/Chathura123git/ethical-hacking-CVE-2011-2523https://github.com/cowsecurity/CVE-2011-2523https://github.com/cybermads/CVE-2011-2523https://github.com/Dahalsamir/CVE-2011-2523-exploithttps://github.com/Efehamzaa/Metasploit-Red-Pentest-Labhttps://github.com/emilebarnard242/pentest-metasploitable2https://github.com/Gill-Singh-A/vsFTP-2.3.4-Remote-Root-Shell-Exploithttps://github.com/Gr4ykt/CVE-2011-2523https://github.com/Gvln-S/CVE-2011-2523https://github.com/H4R335HR/vsftpd-234-backdoorhttps://github.com/hajisthabegum/Exploiting-vsFTPd-2.3.4-Backdoor-Vulnerability-Ethical-Hacking-Lab-with-Metasploitable-2-Metasploithttps://github.com/HerculesRD/vsftpd2.3.4PyExploithttps://github.com/hklabCR/CVE-2011-2523https://github.com/IndiQuarks/vsftpd-cve-2011-2523-labhttps://github.com/IrsaAttiqueCyber/SystemVulnerabilityChecklist_Project4_Decodelabshttps://github.com/IvoAlbacete/Kali-Metasploitablehttps://github.com/Jhatchi/NexaCorp-DFIR-INC-2026-001https://github.com/JohanMV/explotacion-vsftpd-nmap_Laboratorio_1https://github.com/JUN41DS2709/vsFTPd-2.3.4-Exploithttps://github.com/khalilu020/offensive-security-adversary-emulationhttps://github.com/KlyneZyro/Metasploitable2-VAPT-Reporthttps://github.com/kn9annihilator/CVE-2011-2523-vsFTPd-2.3.4-Writeuphttps://github.com/krill-x7/CVE-2011-2523https://github.com/lghost256/vsftpd234-exploithttps://github.com/Lychi3/vsftpd-backdoorhttps://github.com/Lynk4/CVE-2011-2523https://github.com/MFernstrom/OffensivePascal-CVE-2011-2523https://github.com/Mirza-22144/Vulnerability-Assessment-Exploitation-Labhttps://github.com/Mithileshan/soc-investigation-labhttps://github.com/NitinSukthe-G/OpenVAS-Vulnerability-Assessment-Incident-Responsehttps://github.com/nobodyatall648/CVE-2011-2523https://github.com/NullBrunk/CVE-2011-2523https://github.com/Orevic21/wazuh-home-sochttps://github.com/padsalatushal/CVE-2011-2523https://github.com/Prafullya-Shandilya/metasploitable-pentest-reporthttps://github.com/RinAliyeva/metasploitable2-vsftpd-exploitationhttps://github.com/rsakthikumar-cmd/metasploitable2-vsftpd-writeuphttps://github.com/samirchapagain/metasploit-lab-reporthttps://github.com/seerat-fatima21/vsftpd-exploithttps://github.com/Shubham-2k1/Exploit-CVE-2011-2523https://github.com/solomonhenry-afk/vsftpd-cve-2011-2523-detection-signaturehttps://github.com/sonalisarkar-2003/FTP-vsFTPD-CVE-2011-2523-VAPT-Reporthttps://github.com/sug4r-wr41th/CVE-2011-2523https://github.com/Taisa456/network-security-snorthttps://github.com/Tenor-Z/SmileySploithttps://github.com/Tr00jan99/PwnTillDawn-Portal-Walkthroughhttps://github.com/tshaq17/vsftpd-2.3.4---Backdoor-Command-Executionhttps://github.com/vaishnavucv/CVE-2011-2523https://github.com/vedpakhare/vsftpd-234-vuln-reporthttps://github.com/XiangSi-Howard/CTF---CVE-2011-2523https://github.com/yagnikkrish/metasploitable-penetration-testing-labhttps://www.exploit-db.com/exploits/17491

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    References

    http://packetstormsecurity.com/files/162145/vsftpd-2.3.4-Backdoor-Command-Execution.html
    https://access.redhat.com/security/cve/cve-2011-2523
    https://packetstormsecurity.com/files/102745/VSFTPD-2.3.4-Backdoor-Command-Execution.html
    https://security-tracker.debian.org/tracker/CVE-2011-2523
    https://vigilance.fr/vulnerability/vsftpd-backdoor-in-version-2-3-4-10805
    https://www.openwall.com/lists/oss-security/2011/07/11/5
    http://packetstormsecurity.com/files/162145/vsftpd-2.3.4-Backdoor-Command-Execution.html
    https://access.redhat.com/security/cve/cve-2011-2523
    https://packetstormsecurity.com/files/102745/VSFTPD-2.3.4-Backdoor-Command-Execution.html
    https://security-tracker.debian.org/tracker/CVE-2011-2523
    https://vigilance.fr/vulnerability/vsftpd-backdoor-in-version-2-3-4-10805
    https://www.openwall.com/lists/oss-security/2011/07/11/5

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High