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#CVE #Pwn2Own #IoT

Your printer is not your printer ! - Hacking Printers at Pwn2Own Part I

angelboy

 2023-10-05

In 2021, we found Pre-auth RCE vulnerabilities(CVE-2022-24673 and CVE-2022-3942) in Canon and HP printers, and vulnerability(CVE-2021-44734) in Lexmark. We used these vulnerabilities to exploit Canon ImageCLASS MF644Cdw, HP Color LaserJet Pro MFP M283fdw and Lexmark MC3224i in Pwn2Own Austin 2021. Following we will describe the details of the Canon and HP vulnerabilities and exploitation.

#Advisory #CVE #RCE #Facebook #BugBounty

How I Hacked Facebook Again! Unauthenticated RCE on MobileIron MDM

orange

 2020-09-12

This post is about my research this March, which talks about how I found vulnerabilities on a leading Mobile Device Management product and bypassed several limitations to achieve unauthenticated RCE. All the vulnerabilities have been reported to the vendor and got fixed in June. After that, we kept monitoring large corporations to track the overall fixing progress and then found that Facebook didn't keep up with the patch for more than 2 weeks, so we dropped a shell on Facebook and reported to their Bug Bounty program!

#Advisory #CVE #RCE

Hacking Jenkins Part 2 - Abusing Meta Programming for Unauthenticated RCE!(EN)

orange

 2019-02-19

After Jenkins released the [Security Advisory](https://jenkins.io/security/advisory/2018-12-05/#SECURITY-595) and fixed the dynamic routing vulnerability on 2018-12-05, I started to organize my notes in order to write this Hacking Jenkins series. While reviewing notes, I found another exploitation way on a gadget that I failed to exploit before! Therefore, the part two is the story for that! This is also one of my favorite exploits and is really worth reading :)

#Advisory #CVE #infoleak #SSRF

Hacking Jenkins Part 1 - Play with Dynamic Routing (EN)

orange

 2019-01-16

This article is mainly about a brief security review on Jenkins in the last year. During this review, we found 5 vulnerabilities including: CVE-2018-1999002(Arbitrary file read vulnerability), CVE-2018-1000600(CSRF and missing permission checks in GitHub Plugin), CVE-2018-1999046(Unauthorized users could access agent logs), CVE-2018-1000861(Code execution through crafted URLs), CVE-2019-pending(Sandbox Bypass in Script Security and Pipeline Plugins)

#Advisory #Exim #RCE #CVE

Exim Off-by-one RCE: Exploiting CVE-2018-6789 with Fully Mitigations Bypassing

meh

 2018-03-06

We reported an overflow vulnerability in the base64 decode function of Exim on 5 February, 2018, identified as CVE-2018-6789. This bug exists since the first commit of exim, hence ALL versions are affected. According to our research, it can be leveraged to gain Pre-auth Remote Code Execution and at least 400k servers are at risk. Patched version 4.90.1 is already released and we suggest to upgrade exim immediately.