cbcvebase.
CVE-2017-8487
published 2017-06-15

CVE-2017-8487: Windows OLE in Windows XP and Windows Server 2003 allows an attacker to execute code when a victim opens a specially crafted file or program aka "Windows…

PriorityP278high7.8CVSS 3.0
AVLACLPRNUIRSUCHIHAH
ITWEXPLOITVulnCheck KEV
Exploited in the wild
EPSS
62.53%
99.1th percentile
Windows OLE in Windows XP and Windows Server 2003 allows an attacker to execute code when a victim opens a specially crafted file or program aka "Windows olecnv32.dll Remote Code Execution Vulnerability."

Affected

1 ranges
VendorProductVersion rangeFixed in
microsoft_corporationmicrosoft_windows——

Detection & IOCsextracted from sources · hover to see the quote

otherIOCTL 0x390400 to \Device\KsecDD↗
path\Device\KsecDD↗
bytes↗
4d 3c 2b 1a 00 00 02 00 ff ff ff ff 00 00 00 00 20 00 00 00 ff ff ff ff 01 00 00 00 02 00 00 00 33 00 44 00 45 00 53 00 00 00
  • →Monitor for DeviceIoControl calls targeting \Device\KsecDD with IOCTL code 0x390400 and operation code 0x00020000 (bytes 4-7 of input buffer), which triggers uninitialized kernel pool memory disclosure. ↗
  • →Flag processes opening \Device\KsecDD with FILE_READ_DATA | FILE_WRITE_DATA access via NtOpenFile outside of expected system processes, especially when followed immediately by a DeviceIoControl with IOCTL 0x390400. ↗
  • →The CVE-2017-8487 vulnerability resides in olecnv32.dll on Windows XP and Windows Server 2003; monitor for suspicious loading or execution involving this DLL triggered by opening crafted files. ↗
  • ·The exploit-db entry (42211) describes a KsecDD kernel pool memory disclosure bug, which is a different vulnerability from the olecnv32.dll RCE described in CVE-2017-8487. The two may have been cross-linked; validate source attribution before correlating IOCs. ↗
  • ·CVE-2017-8487 affects only Windows XP and Windows Server 2003; IOCs and detections are only relevant on those end-of-life platforms. ↗

CVSS provenance

nvdv3.07.8HIGHCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
nvdv2.09.3CRITICALAV:N/AC:M/Au:N/C:C/I:C/A:C
vulncheck7.8HIGH
CVEs like this are exactly what “Exploited This Week” covers.

Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.