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    CVE-2019-18634

    In Sudo before 1.8.26, if pwfeedback is enabled in /etc/sudoers, users can trigger a stack-based buffer overflow in the privileged sudo process. (pwfeedback is a default setting in Linux Mint and elementary OS; however, it is NOT the default for upstream and many other packages, and would exist only if enabled by an administrator.) The attacker needs to deliver a long string to the stdin of getln() in tgetpass.c.

    Published:Jan 29, 2020
    Last Modified:Nov 21, 2024
    EPS:Jan 29, 2020
    EPSS Score:0.87268
    CVSS Score:7.8

    Affected Products

    Vendor
    Debian
    Product
    Debian Linux
    Vendor
    Redhat
    Product
    Enterprise Linux
    Vendor
    Redhat
    Product
    Rhel E4s
    Vendor
    Sudo Project
    Product
    Sudo

    Exploits

    http://www.openwall.com/lists/oss-security/2020/02/05/5https://www.sudo.ws/alerts/pwfeedback.htmlhttp://www.openwall.com/lists/oss-security/2020/02/05/5https://www.sudo.ws/alerts/pwfeedback.htmlhttps://www.exploit-db.com/exploits/47995https://github.com/aesophor/CVE-2019-18634https://github.com/chanbakjsd/CVE-2019-18634https://github.com/CyrusRazavi/CVE-2019-18634-writeuphttps://github.com/DDayLuong/CVE-2019-18634https://github.com/DevTeam6Rabbit/CVE-2019-18634-writeuphttps://github.com/dukptkey/CVE-2019-18634https://github.com/edsonjt81/sudo-cve-2019-18634https://github.com/l0w3/CVE-2019-18634https://github.com/letsr00t/-CVE-2019-18634-sudo-pwfeedbackhttps://github.com/Moscvv/thm-cybersec-portfoliohttps://github.com/N1et/CVE-2019-18634https://github.com/ngyinkit/cve-2019-18634https://github.com/paras1te-x/CVE-2019-18634https://github.com/Plazmaz/CVE-2019-18634https://github.com/ptef/CVE-2019-18634https://github.com/saleemrashid/sudo-cve-2019-18634https://github.com/TheJoyOfHacking/saleemrashid-sudo-cve-2019-18634https://www.exploit-db.com/exploits/48052

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

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    References

    http://lists.opensuse.org/opensuse-security-announce/2020-02/msg00029.html
    http://packetstormsecurity.com/files/156174/Slackware-Security-Advisory-sudo-Updates.html
    http://packetstormsecurity.com/files/156189/Sudo-1.8.25p-Buffer-Overflow.html
    http://seclists.org/fulldisclosure/2020/Jan/40
    http://www.openwall.com/lists/oss-security/2020/01/30/6
    http://www.openwall.com/lists/oss-security/2020/01/31/1
    http://www.openwall.com/lists/oss-security/2020/02/05/2
    http://www.openwall.com/lists/oss-security/2020/02/05/5
    https://access.redhat.com/errata/RHSA-2020:0487
    https://access.redhat.com/errata/RHSA-2020:0509
    https://access.redhat.com/errata/RHSA-2020:0540
    https://access.redhat.com/errata/RHSA-2020:0726
    https://lists.debian.org/debian-lts-announce/2020/02/msg00002.html
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/I6TKF36KOQUVJNBHSVJFA7BU3CCEYD2F/
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IY6DZ7WMDKU4ZDML6MJLDAPG42B5WVUC/
    https://seclists.org/bugtraq/2020/Feb/2
    https://seclists.org/bugtraq/2020/Feb/3
    https://seclists.org/bugtraq/2020/Jan/44
    https://security.gentoo.org/glsa/202003-12
    https://security.netapp.com/advisory/ntap-20200210-0001/
    https://support.apple.com/kb/HT210919
    https://usn.ubuntu.com/4263-1/
    https://usn.ubuntu.com/4263-2/
    https://www.debian.org/security/2020/dsa-4614
    https://www.sudo.ws/alerts/pwfeedback.html
    https://www.sudo.ws/security.html
    http://lists.opensuse.org/opensuse-security-announce/2020-02/msg00029.html
    http://packetstormsecurity.com/files/156174/Slackware-Security-Advisory-sudo-Updates.html
    http://packetstormsecurity.com/files/156189/Sudo-1.8.25p-Buffer-Overflow.html
    http://seclists.org/fulldisclosure/2020/Jan/40
    http://www.openwall.com/lists/oss-security/2020/01/30/6
    http://www.openwall.com/lists/oss-security/2020/01/31/1
    http://www.openwall.com/lists/oss-security/2020/02/05/2
    http://www.openwall.com/lists/oss-security/2020/02/05/5
    https://access.redhat.com/errata/RHSA-2020:0487
    https://access.redhat.com/errata/RHSA-2020:0509
    https://access.redhat.com/errata/RHSA-2020:0540
    https://access.redhat.com/errata/RHSA-2020:0726
    https://lists.debian.org/debian-lts-announce/2020/02/msg00002.html
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/I6TKF36KOQUVJNBHSVJFA7BU3CCEYD2F/
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IY6DZ7WMDKU4ZDML6MJLDAPG42B5WVUC/
    https://seclists.org/bugtraq/2020/Feb/2
    https://seclists.org/bugtraq/2020/Feb/3
    https://seclists.org/bugtraq/2020/Jan/44
    https://security.gentoo.org/glsa/202003-12
    https://security.netapp.com/advisory/ntap-20200210-0001/
    https://support.apple.com/kb/HT210919
    https://usn.ubuntu.com/4263-1/
    https://usn.ubuntu.com/4263-2/
    https://www.debian.org/security/2020/dsa-4614
    https://www.sudo.ws/alerts/pwfeedback.html
    https://www.sudo.ws/security.html

    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