CVE-2017-5358 — Stack-based buffer overflows in php_Easycom5_3_0

Stack-based buffer overflows in php_Easycom5_3_0.dll in EasyCom for PHP 4.0.0.29 allows remote attackers to execute arbitrary code via the server argument to the (1) i5_connect, (2) i5_pconnect, or (3) i5_private_connect API function.

01What is this vulnerability?

Stack-based buffer overflows in php_Easycom5_3_0.dll in EasyCom for PHP 4.0.0.29 allows remote attackers to execute arbitrary code via the server argument to the (1) i5_connect, (2) i5_pconnect, or (3) i5_private_connect API function.

02Affected products

No structured affected-product list available — see references below for vendor advisories.

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2017-03-15T15:59:00.547
• Last modified: 2026-05-13T00:24:29.033

09References

• hyp3rlinx.altervista.org — http://hyp3rlinx.altervista.org/advisories/EASYCOM-PHP-API-BUFFER-OVERFLOW.txt
• packetstormsecurity.com — http://packetstormsecurity.com/files/141299/EasyCom-AS400-PHP-API-Buffer-Overflo…
• seclists.org — http://seclists.org/fulldisclosure/2017/Feb/60
• www.securityfocus.com — http://www.securityfocus.com/bid/96419
• www.exploit-db.com — https://www.exploit-db.com/exploits/41425/
• hyp3rlinx.altervista.org — http://hyp3rlinx.altervista.org/advisories/EASYCOM-PHP-API-BUFFER-OVERFLOW.txt
• packetstormsecurity.com — http://packetstormsecurity.com/files/141299/EasyCom-AS400-PHP-API-Buffer-Overflo…
• seclists.org — http://seclists.org/fulldisclosure/2017/Feb/60
• www.securityfocus.com — http://www.securityfocus.com/bid/96419
• www.exploit-db.com — https://www.exploit-db.com/exploits/41425/