Open SSH Sandbox

Examining OpenSSH Sandboxing and Privilege Separation – Attack Surface Analysis

The recent OpenSSH double-free vulnerability – CVE-2023-25136, created a lot of interest and confusion regarding OpenSSH’s custom security mechanisms – Sandbox and Privilege Separation. Until now, both of these security mechanisms were somewhat unnoticed and only partially documented. The double-free vulnerability raised interest for those who were affected and those controlling servers that use OpenSSH. …

JAS Contextual Analysis WebGoat Application

Testing the actual security of the most insecure Docker application

Our previous research on CVE exploitability in the top DockerHub images discovered that 78% of the reported CVEs were actually not exploitable. This time, the JFrog Security Research team used JFrog Xray’s Contextual Analysis feature, automatically analyzing the applicability of reported CVEs, to scan OWASP WebGoat – a deliberately insecure application. The results identified that …

OpenSSH Pre-Auth Double Free CVE-2023-25136 Writeup and PoC

OpenSSH Pre-Auth Double Free CVE-2023-25136 – Writeup and Proof-of-Concept

OpenSSH’s newly released version 9.2p1 contains a fix for a double-free vulnerability. Given the severe potential impact of the vulnerability on OpenSSH servers (DoS/RCE) and its high popularity in the industry, this security fix prompted the JFrog Security Research team to investigate the vulnerability. This blog post provides details on the vulnerability, who is affected, …

Detecting Malicious Packages and How They Obfuscate Their Malicious Code

Wow! We made it to the last post in our Malicious Packages series. While parting is such sweet sorrow, we hope blogs one, two, and three provide insights into the havoc malicious packages cause throughout your DevOps and DevSecOps pipelines.  In the prior posts: We explained what software supply chain attacks are and learned the …

Watch out for DoS when using Rust’s popular Hyper package

Watch out for DoS when using Rust’s popular Hyper package

The JFrog Security Research team is constantly looking for new and previously unknown vulnerabilities and security issues in popular open-source projects to help improve their security posture and defend the wider software supply chain. As part of this effort, we recently discovered and disclosed multiple vulnerabilities in popular Rust projects such as Axum, Salvo and …

Latest LastPass security breach highlights

Latest LastPass security breach highlights developers as a high-value target

Last August, the maintainers of the LastPass cloud-based password manager tool reported a security breach in their servers. The disclosure maintained that an unauthorized party gained access to the LastPass development environment through a single compromised developer account. However – while source code and technical information was stolen, no user data was compromised and no …

PyPI malware are starting to employ Anti-Debug techniques

PyPI malware creators are starting to employ Anti-Debug techniques

The JFrog Security Research team continuously monitors popular open-source software (OSS) repositories with our automated tooling, and reports any vulnerabilities or malicious packages discovered to repository maintainers and the wider community. Most PyPI malware today tries to avoid static detection using various techniques: starting from primitive variable mangling to sophisticated code flattening and steganography techniques. …

Invisible npm malware – evading security checks with crafted versions

The npm CLI has a very convenient and well-known security feature – when installing an npm package, the CLI checks the package and all of its dependencies for well-known vulnerabilities – The check is triggered on package installation (when running npm install) but can also be triggered manually by running npm audit. This is an …

JFrog Contextual Analysis 203x148

Turns out 78% of reported common CVEs on top DockerHub images are not really exploitable

Research motivations Similarly to our previous research on “Secrets Detection,” during the development and testing of JFrog Xray’s new “Contextual Analysis” feature, we wanted to test our detection in a large-scale real-world use case, both for eliminating bugs and testing the real-world viability of our current solution. However, unlike the surprising results we got in our …