CVE-2017-17562 on CISA KEV

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

01What CISA says about this vulnerability

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…

02Required action — verbatim from CISA

Apply updates per vendor instructions.

03Notes & references

• github.com — https://github.com/elttam/advisories/tree/master/CVE-2017-17562
• www.securitytracker.com — http://www.securitytracker.com/id/1040702
• www.elttam.com.au — https://www.elttam.com.au/blog/goahead/
• www.exploit-db.com — https://www.exploit-db.com/exploits/43360/
• www.oracle.com — http://www.oracle.com/technetwork/security-advisory/cpuapr2018-3678067.html
• github.com — https://github.com/embedthis/goahead/commit/6f786c123196eb622625a920d54048629a7c…
• github.com — https://github.com/embedthis/goahead/issues/249
• www.exploit-db.com — https://www.exploit-db.com/exploits/43877/

04SARA's analyst layer — why this matters

This vulnerability is currently on the CISA KEV list, which CISA only adds CVEs to when there is reliable evidence of active exploitation in the wild. For federal civilian agencies, BOD 22-01 requires remediation by the due date above. For everyone else, KEV is the strongest "patch immediately" signal you can get from public threat intel.

05Affected products (summary)

Vendor	Product	Versions
n	a / n/a	n/a

06Detection

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