Embedthis · GoAhead
CVE-2017-17562
Embedthis GoAhead Remote Code Execution Vulnerability
What it is
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.
CISA: Embedthis GoAhead before 3.6.5 allows remote code execution if CGI is enabled and a CGI program is dynamically linked.
What to do
Apply updates per vendor instructions.
Deadline for US federal agencies: June 10, 2022
- Added to the CISA list
- December 10, 2021
- Published
- December 12, 2017
- Severity
- High 8.1 CVSS 3.1
- Chance of attacks in the next 30 days (EPSS)
- 97% in the top 0.1% of all known vulnerabilities
- Weakness
- CWE-20
- More details
- NVD · CVE.org · CISA
All references (8)
- https://github.com/elttam/advisories/tree/master/CVE-2017-17562
- http://www.securitytracker.com/id/1040702
- https://www.elttam.com.au/blog/goahead/
- https://www.exploit-db.com/exploits/43360/
- http://www.oracle.com/technetwork/security-advisory/cpuapr2018-3678067.html
- https://github.com/embedthis/goahead/commit/6f786c123196eb622625a920d54048629a7caa74
- https://github.com/embedthis/goahead/issues/249
- https://www.exploit-db.com/exploits/43877/
Sources: Known Exploited Vulnerabilities (CISA, public domain), CVE records (cve.org) and EPSS (FIRST). The chance of attacks is the EPSS estimate that someone will try to exploit the flaw in the next 30 days.