CVE-2017-5358

published 2017-03-15

CVE-2017-5358: 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…

Priority P2 66 critical 9.8 CVSS 3.0

AV N AC L PR N UI N S U C H I H A H

EXPLOIT

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.

Affected

1 ranges

Vendor	Product	Version range	Fixed in
easycom-aura	easycom_for_php	—	—

Detection & IOCs extracted from sources · hover to see the quote

filename php_Easycom5_3_0.dll↗

filename EasycomPHP_4.0029.iC8im2.exe↗

• → Detect SEH chain corruption as an indicator of exploitation; a corrupted SEH entry (e.g. 52525252 *** CORRUPT ENTRY ***) alongside overwritten SE handler (42424242) signals active buffer overflow exploitation. ↗
• → The !exploitable classification of 'EXPLOITABLE - Data Execution Prevention Violation starting at Unknown Symbol @ 0x0000000041414141' confirms user-mode DEP bypass is achievable; monitor for DEP violations in php.exe processes loading php_Easycom5_3_0.dll. ↗

• · The vulnerable functions are i5_connect, i5_pconnect, and i5_private_connect; the overflow is triggered via the 'server' argument to these API calls. ↗

CVSS provenance

nvd v3.0 9.8 CRITICAL CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

nvd v2.0 7.5 HIGH AV:N/AC:L/Au:N/C:P/I:P/A:P

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