Vulnerability in Embedthis Goahead
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 · last modified .
CVSS v3 metric
CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.963 (99.9th percentile), scored .
Very high probability of exploitation in the next 30 days — among the top 0.1% most-likely-to-be-exploited CVEs. 100th percentile — 99.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.963 · newest: 0.963 · change: 0.000
Affected products
- Embedthis Goahead
- Oracle Integrated Lights Out Manager — versions 3.0, 4.0
CISA KEV (Known Exploited Vulnerabilities)
This CVE is on the CISA KEV catalog, added on . CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.
BOD 22-01 due date: .
Required action: Apply updates per vendor instructions.
Public proof-of-concept exploits
References
- github.com/elttam/advisories/tree/master/CVE-2017-17562 (Third Party Advisory, Broken Link)
- www.securitytracker.com/id/1040702 (VDB Entry, Third Party Advisory, vdb-entry, Broken Link)
- www.elttam.com.au/blog/goahead/ (Exploit, Patch, Third Party Advisory, Broken Link)
- www.exploit-db.com/exploits/43360/ (Exploit, VDB Entry, Third Party Advisory, exploit)
- www.oracle.com/technetwork/security-advisory/cpuapr2018-3678067.html (Patch, Third Party Advisory)
- github.com/embedthis/goahead/commit/6f786c123196eb622625a920d54048629a7caa74 (Patch, Third Party Advisory, Broken Link)
- github.com/embedthis/goahead/issues/249 (Third Party Advisory, Issue Tracking, Broken Link)
- www.exploit-db.com/exploits/43877/ (Exploit, VDB Entry, Third Party Advisory, exploit)
- 134c704f-9b21-4f2e-91b3-4a467353bcc0 (US Government Resource)
Frequently asked questions
- What is CVE-2017-17562?
- CVE-2017-17562 is a high-severity vulnerability in Embedthis Goahead. CVSS score: 8.1/10. Published 2017-12-12.
- How severe is CVE-2017-17562?
- High severity. CVSS v3 base score is 8.1 out of 10.
- Is CVE-2017-17562 known to be exploited?
- Yes. CVE-2017-17562 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2021-12-10), indicating it is being actively exploited. 47 public proof-of-concept repositories are indexed.