cbcvebase.
CVE-2017-0090
published 2017-03-17

CVE-2017-0090: Uniscribe in Microsoft Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, and Windows 7 SP1 allows remote attackers to execute arbitrary code via a crafted…

PriorityP272high8.8CVSS 3.0
AVNACLPRNUIRSUCHIHAH
EXPLOIT
EPSS
42.55%
98.5th percentile
Uniscribe in Microsoft Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, and Windows 7 SP1 allows remote attackers to execute arbitrary code via a crafted web site, aka "Uniscribe Remote Code Execution Vulnerability." This vulnerability is different from those described in CVE-2017-0072, CVE-2017-0083, CVE-2017-0084, CVE-2017-0086, CVE-2017-0087, CVE-2017-0088, and CVE-2017-0089.

Affected

14 ranges
VendorProductVersion rangeFixed in
microsoftwindows_10
microsoftwindows_10
microsoftwindows_server_2008
microsoftwindows_server_2012
microsoft_corporationwindows_uniscribe
msrcwindows_7_for_32-bit_systems_service_pack_1
msrcwindows_7_for_x64-based_systems_service_pack_1
msrcwindows_server_2008_for_32-bit_systems_service_pack_2
msrcwindows_server_2008_for_itanium-based_systems_service_pack_2
msrcwindows_server_2008_for_x64-based_systems_service_pack_2
msrcwindows_server_2008_r2_for_itanium-based_systems_service_pack_1
msrcwindows_server_2008_r2_for_x64-based_systems_service_pack_1
msrcwindows_vista_service_pack_2
msrcwindows_vista_x64_edition_service_pack_2

Detection & IOCsextracted from sources · hover to see the quote

urlhttps://gitlab.com/exploit-database/exploitdb-bin-sploits/-/raw/main/bin-sploits/41653.zip
  • Crash occurs in USP10!BuildFSM and functions it calls (e.g. USP10!BuildDynamicStatesStaticInputs, USP10!LoadArabicShapeTables, USP10!ArabicLoadTbl) when processing a specially crafted/corrupted font file; monitor for access violations (code c0000005) originating from USP10.dll call stacks involving these functions.
  • Attack vector is a crafted font file delivered via a malicious web page or document attachment; monitor for USP10.dll heap memory corruption triggered by rendering untrusted font glyphs at various point sizes.
  • Enable PageHeap on test systems to reliably reproduce the crash; in production, watch for heap corruption in USP10!UspAllocCache allocations originating from BuildFSM.
  • ·Reproduction of the crash may require a custom program that displays all of the font's glyphs at various point sizes; standard font viewers may not trigger the vulnerability.
  • ·The CVE-2017-0090 MSRC entry notes exploitation status as 'Exploited: No' and 'Publicly Disclosed: No' at time of patch release, reducing immediate in-the-wild risk but not eliminating it given the public PoC.

CVSS provenance

nvdv3.08.8HIGHCVSS:3.0/AV:N/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
vendor_msrc8.8HIGH
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