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    CVE-2017-17562

    Embedthis GoAhead before 3.6.5 allows remote code execution if CGI is enabled and a CGI program is dynamically linked. This is a result of initializing the environment of forked CGI scripts using untrusted HTTP request parameters in the cgiHandler function in cgi.c. When combined with the glibc dynamic linker, this behaviour can be abused for remote code execution using special parameter names such as LD_PRELOAD. An attacker can POST their shared object payload in the body of the request, and reference it using /proc/self/fd/0.

    Published:Dec 12, 2017
    Last Modified:Apr 21, 2026
    EPS:Dec 12, 2017
    EPSS Score:0.94312
    CVSS Score:8.1

    CISA Notification

    Description

    Embedthis GoAhead before 3.6.5 allows remote code execution if CGI is enabled and a CGI program is dynamically linked. This is a result of initializing the environment of forked CGI scripts using untrusted HTTP request parameters in the cgiHandler function in cgi.c. When combined with the glibc dynamic linker, this behaviour can be abused for remote code execution using special parameter names such as LD_PRELOAD. An attacker can POST their shared object payload in the body of the request, and reference it using /proc/self/fd/0.

    Required Action:

    Apply updates per vendor instructions.

    Notes:

    No extra notes provided.

    Due Date
    Jun 10, 2022
    1554 days ago
    Alert Date
    Dec 10, 2021
    1736 days ago

    Affected Products

    Vendor
    Embedthis
    Product
    Goahead
    Vendor
    Oracle
    Product
    Integrated Lights Out Manager

    Exploits

    https://www.elttam.com.au/blog/goahead/https://www.exploit-db.com/exploits/43360/https://www.exploit-db.com/exploits/43877/https://www.elttam.com.au/blog/goahead/https://www.exploit-db.com/exploits/43360/https://www.exploit-db.com/exploits/43877/https://www.exploit-db.com/exploits/43360https://github.com/1337g/CVE-2017-17562https://github.com/crispy-peppers/Goahead-CVE-2017-17562https://github.com/ivanitlearning/CVE-2017-17562https://github.com/joaomagfreitas/bash-CVE-2017-17562https://github.com/nu11pointer/goahead-rce-exploithttps://www.exploit-db.com/exploits/43877

    Common Weakness Enumeration

    No CWE recorded yet

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

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    CVE-2024-3186 (CVSS 5.3) — CWE-476 NULL Pointer Dereference vulnerability in the evalExpr() function of GoAhead Web Server (version <= 6.…
    CVE-2024-3184 (CVSS 5.9) — Multiple CWE-476 NULL Pointer Dereference vulnerabilities were found in GoAhead Web Server up to version 6.0.0…
    CVE-2021-41615 (CVSS 9.8) — websda.c in GoAhead WebServer 2.1.8 has insufficient nonce entropy because the nonce calculation relies on the…
    CVE-2021-43298 (CVSS 9.8) — The code that performs password matching when using 'Basic' HTTP authentication does not use a constant-time m…
    CVE-2021-42342 (CVSS 9.8) — An issue was discovered in GoAhead 4.x and 5.x before 5.1.5. In the file upload filter, user form variables ca…
    CVE-2020-15688 (CVSS 8.8) — The HTTP Digest Authentication in the GoAhead web server before 5.1.2 does not completely protect against repl…
    CVE-2019-5096 (CVSS 9.8) — An exploitable code execution vulnerability exists in the processing of multi-part/form-data requests within t…
    CVE-2019-5097 (CVSS 7.5) — A denial-of-service vulnerability exists in the processing of multi-part/form-data requests in the base GoAhea…

    References

    http://www.oracle.com/technetwork/security-advisory/cpuapr2018-3678067.html
    http://www.securitytracker.com/id/1040702
    https://github.com/elttam/advisories/tree/master/CVE-2017-17562
    https://github.com/embedthis/goahead/commit/6f786c123196eb622625a920d54048629a7caa74
    https://github.com/embedthis/goahead/issues/249
    https://www.elttam.com.au/blog/goahead/
    https://www.exploit-db.com/exploits/43360/
    https://www.exploit-db.com/exploits/43877/
    http://www.oracle.com/technetwork/security-advisory/cpuapr2018-3678067.html
    http://www.securitytracker.com/id/1040702
    https://github.com/elttam/advisories/tree/master/CVE-2017-17562
    https://github.com/embedthis/goahead/commit/6f786c123196eb622625a920d54048629a7caa74
    https://github.com/embedthis/goahead/issues/249
    https://www.elttam.com.au/blog/goahead/
    https://www.exploit-db.com/exploits/43360/
    https://www.exploit-db.com/exploits/43877/
    https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2017-17562

    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