In January, we identified and reported a vulnerability in the Lotus and Venus clients of the Filecoin network that allowed an attacker to remotely crash a node and trigger a denial of service. This issue is caused by an incorrect validation of an index, resulting in an index out-of-range panic. The vulnerability […]
We’re digging up the archives of vulnerabilities that Trail of Bits has reported over the years. This post shares the story of two such issues: a denial-of-service (DoS) vulnerability hidden in JSON Web Tokens (JWTs), and an oversight in the Linux kernel that could enable circumvention of critical kernel […]
Today we are disclosing a denial-of-service vulnerability that affects the Pedersen distributed key generation (DKG) phase of a number of threshold signature scheme implementations based on the Frost, DMZ21, GG20, and GG18 protocols. The vulnerability allows a single malicious participant to surreptitiously raise the threshold required to reconstruct the shared key, which […]
We are disclosing LeftoverLocals: a vulnerability that allows recovery of data from GPU local memory created by another process on Apple, Qualcomm, AMD, and Imagination GPUs. LeftoverLocals impacts the security posture of GPU applications as a whole, with particular significance to LLMs and ML models run on impacted GPU […]
Behind Ethereum’s powerful blockchain technology lies a lesser-known challenge that blockchain developers face: the intricacies of writing robust Ethereum ABI (Application Binary Interface) parsers. Ethereum’s ABI is critical to the blockchain’s infrastructure, enabling seamless interactions between smart contracts and external applications. The complexity of data types and the need for precise encoding […]
Trail of Bits is publicly disclosing a vulnerability (CVE-2023-38596) that affects iOS, iPadOS, and tvOS before version 17, macOS before version 14, and watchOS before version 10. The flaw resides in Apple’s App Transport Security (ATS) protocol handling. We discovered that Apple’s ATS fails to require the encryption of connections to IP […]
Trail of Bits is publicly disclosing a vulnerability in the Osmosis chain that allows an attacker to craft a transaction that takes up a disproportionate amount of compute time on Osmosis nodes compared to the amount of gas it consumes. Using the vulnerability, an attacker can halt the Osmosis chain by spamming […]
We identified 10 security vulnerabilities within the caddy-security plugin for the Caddy web server that could enable a variety of high-severity attacks in web applications, including client-side code execution, OAuth replay attacks, and unauthorized access to resources. During our evaluation, Caddy was deployed as a reverse proxy […]
Many security-critical off-chain applications use a simple block delay to determine finality: the point at which a transaction becomes immutable in a blockchain’s ledger (and is impossible to “undo” without extreme economic cost). But this is inadequate for most networks, and can become a single point of failure for the centralized exchanges, […]
In part one of this two-part series, we escaped Webviews in real-world misconfigured VSCode extensions. But can we still escape extensions if they are well-configured? In this post, we’ll demonstrate how I bypassed a Webview’s localResourceRoots by exploiting small URL parsing differences between the browser—i.e., the Electron-created Chromium instance where VSCode and […]
TL;DR: This two-part blog series will cover how I found and disclosed three vulnerabilities in VSCode extensions and one vulnerability in VSCode itself (a security mitigation bypass assigned CVE-2022-41042 and awarded a $7,500 bounty). We will identify the underlying cause of each vulnerability and create fully working exploits to demonstrate how an […]
Trail of Bits is publicly disclosing four vulnerabilities that affect wolfSSL: CVE-2022-38152, CVE-2022-38153, CVE-2022-39173, and CVE-2022-42905. The four issues, which have CVSS scores ranging from medium to critical, can all result in a denial of service (DoS). These vulnerabilities have been discovered automatically using the novel protocol fuzzer tlspuffin. This blog post […]
Zero-knowledge (ZK) proofs are useful cryptographic tools that have seen an explosion of interest in recent years, largely due to their applications to cryptocurrency. The fundamental idea of a ZK proof is that a person with a secret piece of information (a cryptographic key, for instance) can prove something about the secret […]
Trail of Bits is publicly disclosing CVE-2022-35737, which affects applications that use the SQLite library API. CVE-2022-35737 was introduced in SQLite version 1.0.12 (released on October 17, 2000) and fixed in release 3.39.2 (released on July 21, 2022). CVE-2022-35737 is exploitable on 64-bit systems, and exploitability depends on how the program is […]
Trail of Bits is publicly disclosing critical vulnerabilities that break the soundness of multiple implementations of zero-knowledge proof systems, including PlonK and Bulletproofs. These vulnerabilities are caused by insecure implementations of the Fiat-Shamir transformation that allow malicious users to forge proofs for random statements. We’ve dubbed this class of vulnerabilities Frozen Heart. […]
