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    CVE-2019-20372

    NGINX before 1.17.7, with certain error_page configurations, allows HTTP request smuggling, as demonstrated by the ability of an attacker to read unauthorized web pages in environments where NGINX is being fronted by a load balancer.

    Published:Jan 9, 2020
    Last Modified:Nov 21, 2024
    EPS:Jan 9, 2020
    EPSS Score:0.70235
    CVSS Score:5.3

    Affected Products

    Vendor
    Apple
    Product
    Xcode
    Vendor
    Canonical
    Product
    Ubuntu Linux
    Vendor
    F5
    Product
    Nginx
    Vendor
    Netapp
    Product
    Cloud Backup
    Vendor
    Opensuse
    Product
    Leap
    Vendor
    Redhat
    Product
    Ansible Tower
    Vendor
    Redhat
    Product
    Enterprise Linux
    Vendor
    Redhat
    Product
    Rhel Software Collections

    Exploits

    https://bertjwregeer.keybase.pub/2019-12-10%20-%20error_page%20request%20smuggling.pdfhttps://bertjwregeer.keybase.pub/2019-12-10%20-%20error_page%20request%20smuggling.pdfhttps://github.com/0xleft/CVE-2019-20372https://github.com/moften/CVE-2019-20372https://github.com/vuongnv3389-sec/CVE-2019-20372

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-273 HTTP Response Smuggling
    CAPEC-33 HTTP Request Smuggling

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    References

    http://lists.opensuse.org/opensuse-security-announce/2020-02/msg00013.html
    http://nginx.org/en/CHANGES
    http://seclists.org/fulldisclosure/2021/Sep/36
    https://bertjwregeer.keybase.pub/2019-12-10%20-%20error_page%20request%20smuggling.pdf
    https://duo.com/docs/dng-notes#version-1.5.4-january-2020
    https://github.com/kubernetes/ingress-nginx/pull/4859
    https://github.com/nginx/nginx/commit/c1be55f97211d38b69ac0c2027e6812ab8b1b94e
    https://security.netapp.com/advisory/ntap-20200127-0003/
    https://support.apple.com/kb/HT212818
    https://usn.ubuntu.com/4235-1/
    https://usn.ubuntu.com/4235-2/
    http://lists.opensuse.org/opensuse-security-announce/2020-02/msg00013.html
    http://nginx.org/en/CHANGES
    http://seclists.org/fulldisclosure/2021/Sep/36
    https://bertjwregeer.keybase.pub/2019-12-10%20-%20error_page%20request%20smuggling.pdf
    https://duo.com/docs/dng-notes#version-1.5.4-january-2020
    https://github.com/kubernetes/ingress-nginx/pull/4859
    https://github.com/nginx/nginx/commit/c1be55f97211d38b69ac0c2027e6812ab8b1b94e
    https://security.netapp.com/advisory/ntap-20200127-0003/
    https://support.apple.com/kb/HT212818
    https://usn.ubuntu.com/4235-1/
    https://usn.ubuntu.com/4235-2/

    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