CVE-2017-17562 Detail

Current 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.


View Analysis Description

Severity



CVSS 3.x Severity and Metrics:

NIST CVSS score
NIST: NVD
Base Score:  8.1 HIGH
Vector:  CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H


NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.

Note: NVD Analysts have published a CVSS score for this CVE based on publicly available information at the time of analysis. The CNA has not provided a score within the CVE List.

References to Advisories, Solutions, and Tools

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Hyperlink Resource
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 Third Party Advisory 
https://github.com/embedthis/goahead/commit/6f786c123196eb622625a920d54048629a7caa74 Patch  Third Party Advisory 
https://github.com/embedthis/goahead/issues/249 Issue Tracking  Third Party Advisory 
https://www.elttam.com.au/blog/goahead/ Exploit  Patch  Third Party Advisory 
https://www.exploit-db.com/exploits/43360/ Exploit  Third Party Advisory  VDB Entry 
https://www.exploit-db.com/exploits/43877/

Weakness Enumeration

CWE-ID CWE Name Source
CWE-20 Improper Input Validation cwe source acceptance level NIST  

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Change History

6 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2017-17562
NVD Published Date:
12/12/2017
NVD Last Modified:
04/19/2018
Source:
MITRE