cbcvebase.
CVE-2020-1300
published 2020-06-09

CVE-2020-1300: A remote code execution vulnerability exists when Microsoft Windows fails to properly handle cabinet files.To exploit the vulnerability, an attacker would have…

PriorityP265high8.8CVSS 3.1
AVNACLPRNUIRSUCHIHAH
EPSS
59.52%
99.0th percentile
A remote code execution vulnerability exists when Microsoft Windows fails to properly handle cabinet files.To exploit the vulnerability, an attacker would have to convince a user to either open a specially crafted cabinet file or spoof a network printer and trick a user into installing a malicious cabinet file disguised as a printer driver.The update addresses the vulnerability by correcting how Windows handles cabinet files., aka 'Windows Remote Code Execution Vulnerability'.

Affected

74 ranges· showing 25
VendorProductVersion rangeFixed in
microsoftwindows
microsoftwindows
microsoftwindows
microsoftwindows
microsoftwindows
microsoftwindows
microsoftwindows
microsoftwindows
microsoftwindows
microsoftwindows
microsoftwindows
microsoftwindows
microsoftwindows
microsoftwindows
microsoftwindows
microsoftwindows
microsoftwindows
microsoftwindows
microsoftwindows_10
microsoftwindows_10
microsoftwindows_10
microsoftwindows_10
microsoftwindows_10
microsoftwindows_10
microsoftwindows_10

Detection & IOCsextracted from sources · hover to see the quote

path%userprofiles%\AppData\Local\[Some UUID]\
command../../../../../../some_file_name
processPrintBrmEngine.exe
filenamelocalspl.dll
versionPrintBrmEngine.exe version 10.0.18362.894
  • Detect CAB files containing CFFILE szName fields with '../' (dot-dot-slash) directory traversal sequences, which bypass the '..' backslash check in NCabbingLibrary::FdiCabNotify()
  • Monitor PrintBrmEngine.exe and the Print Spooler service (localspl.dll) for file write operations outside of %userprofiles%\AppData\Local\ temp directories, especially writes to sensitive system paths, as exploitation runs in SYSTEM context
  • Monitor Print Management Console (printmanagement.msc) for CAB file extraction activity, as it shares the vulnerable NCabbingLibrary::FdiCabNotify() code path with the Print Spooler
  • ·No public exploits were reported at time of disclosure; exploitation was rated 'Less Likely' by Microsoft for both latest and older software releases
  • ·The directory traversal bypass specifically uses forward-slash '../' sequences; defenses or signatures that only check for backslash '..' traversal will miss this attack vector

CVSS provenance

nvdv3.18.8HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
nvdv2.06.8MEDIUMAV:N/AC:M/Au:N/C:P/I:P/A:P
vendor_msrc7.8HIGH
Stop checking back — get the weekly exploitation signal.

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.