CVE-2026-12039 Docker Sandboxes network egress allowlist bypass via unfiltered DNS resolution

Docker Sandboxes sbx enforces an HTTP/S-only egress allowlist but does not apply it to DNS resolution: the per-network embedded DNS server forwards any queried name to the host resolver whenever the network is internet-connected, without consulting the policy. A workload inside a sandbox, which t...

CVE-2026-12039

Docker Sandboxes sbx enforces an HTTP/S-only egress allowlist but does not apply it to DNS resolution: the per-network embedded DNS server forwards any queried name to the host resolver whenever the network is internet-connected, without consulting the policy. A workload inside a sandbox, which t...

CVE-2026-12039: Improper Restriction of Communication Channel to Intended Endpoints

Docker Sandboxes sbx enforces an HTTP/S-only egress allowlist but does not apply it to DNS resolution: the per-network embedded DNS server forwards any queried name to the host resolver whenever the network is internet-connected, without consulting the policy. A workload inside a sandbox, which t...

Malicious code in @coze-common/chat-area (npm)

--- -= Per source details. Do not edit below this line.=- Source: amazon-inspector 89b49d08422192fa57b4739bf462f0e8b3c206b2c3cfad15578ac92dd6f47b04 This package is a dependency-confusion/namespace-squat against ByteDance's @coze-common scope. The library is hollow — index.js is module.exports = a...

MAL-2026-5533 Malicious code in @coze-common/chat-area (npm)

--- -= Per source details. Do not edit below this line.=- Source: amazon-inspector 89b49d08422192fa57b4739bf462f0e8b3c206b2c3cfad15578ac92dd6f47b04 This package is a dependency-confusion/namespace-squat against ByteDance's @coze-common scope. The library is hollow — index.js is module.exports = a...

Covert Channel

Overview Affected versions of this package are vulnerable to Covert Channel information exposure from CMSdecrypt and PKCS7decrypt. An attacker who can supply CMS or S/MIME messages and observe the application's error code and/or decryption output can use the victim's process as an adaptive chosen...

Hiding the Trees in the Forest: Building Network Covert Channels with Hash-Based Covert Carrier Filtering

As an effective anti-censorship mechanism, network covert channels can provide data privacy protection and ensure communication security. However, the covertness of existing network covert channels primarily depends on the secrecy of their covert algorithms. With the increasing depth of research ...

Anamorphic Encryption with CCA Security: A Standard Model Construction

Anamorphic encryption serves as a vital tool for covert communication, maintaining secrecy even during post-compromise scenarios. Particularly in the receiver-anamorphic setting, a user can shield hidden messages even when coerced into surrendering their secret keys. However, a major bottleneck i...

Memory DisOrder: Memory Re-Orderings As a Timerless Side-Channel

To improve efficiency, nearly all parallel processing units CPUs and GPUs implement relaxed memory models in which memory operations may be re-ordered, i.e., executed out-of-order. Prior testing work in this area found that memory re-orderings are observed more frequently when other cores are...

Memory Re-orderings as a Timerless Side-channel

Summary Researchers have provided AMD with a paper titled “MEMORY DISORDER: Memory Re-orderings as a Timerless Side-channel” In this work, the authors introduced MEMORY DISORDER, a timerless side-channel attack that exploits memory re-orderings to infer activity on other processes. They showed th...

CVE-2023-50923

In QUIC in RFC 9000, the Latency Spin Bit specification section 17.4 does not strictly constrain the bit value when the feature is disabled, which might allow remote attackers to construct a covert channel with data represented as changes to the bit value. NOTE: The "Sheridan, S., Keane, A. 2015...

Supporting Secured Integration of Microarchitectural Defenses

There has been a plethora of microarchitectural-level attacks leading to many proposed countermeasures. This has created an unexpected and unaddressed security issue where naive integration of those defenses can potentially lead to security vulnerabilities. This occurs when one defense changes an...

CYPRESS: Transferring Secrets in the Shadow of Visible Packets

Network steganography and covert communication channels have been studied extensively in the past. However, prior works offer minimal practical use for their proposed techniques and are limited to specific use cases and network protocols. In this paper, we show that covert channels in networking...

Exploiting Page Faults for Covert Communication

We present a novel mechanism to construct a covert channel based on page faults. A page fault is an event that occurs when a process or a thread tries to access a page of memory that is not currently mapped to its address space. The kernel typically responds to this event by performing a context...

DRAM Related Side Channel Attacks

Summary Researchers have provided AMD with a paper titled “Quo VADIS DDR5? Verifying Addressing of DRAM In Software.” In this paper, the authors present an approach to verifying DRAM addressing functions from software using the DRAM row conflict side channel. The authors claim that the presented...

GATEBLEED: Exploiting On-Core Accelerator Power Gating for High Performance and Stealthy Attacks on AI

As power consumption from AI training and inference continues to increase, AI accelerators are being integrated directly into the CPU. Intel's Advanced Matrix Extensions AMX is one such example, debuting on the 4th generation Intel Xeon Scalable CPU. We discover a timing side and covert channel,...

Favicon Trojans: Executable Steganography Via Ico Alpha Channel Exploitation

This paper presents a novel method of executable steganography using the alpha transparency layer of ICO image files to embed and deliver self-decompressing JavaScript payloads within web browsers. By targeting the least significant bit LSB of non-transparent alpha layer image values, the propose...

SmartAttack: Air-Gap Attack Via Smartwatches

Air-gapped systems are considered highly secure against data leaks due to their physical isolation from external networks. Despite this protection, ultrasonic communication has been demonstrated as an effective method for exfiltrating data from such systems. While smartphones have been extensivel...

MAL-2025-4029 Malicious code in ts-runtime-compat-check (npm)

The npm package ts-runtime-compat-check is a malicious package that functions as a key component in a remote code execution attack chain. This package: 1. Contains a postinstall script that executes lib/install.js 2. The install script makes HTTP requests to a server specified by an environment...

State Injection Into Hardware Prefetchers

Bulletin ID: AMD-SB-7023 Potential Impact: Data leakage via Side Channels Severity: N/A Summary A research paper titled ‘ ShadowLoad: Injecting State into Hardware Prefetchers ’ was provided to AMD in February 2024. The paper discusses the possibility for prefetchers to be used to inject cache...