CVE-2024-7535 Overview
CVE-2024-7535 affects the V8 JavaScript engine in Google Chrome versions prior to 127.0.6533.99. The vulnerability stems from an inappropriate implementation in V8 that allows a remote attacker to potentially trigger heap corruption through a crafted HTML page. Google classified the Chromium security severity as High. Exploitation requires user interaction, typically by visiting an attacker-controlled web page. The flaw is tracked under [CWE-787] (Out-of-bounds Write) and impacts the confidentiality, integrity, and availability of the browser process.
Critical Impact
Remote attackers can trigger heap corruption in the V8 engine through a crafted HTML page, potentially leading to arbitrary code execution within the Chrome renderer process.
Affected Products
- Google Chrome versions prior to 127.0.6533.99 on Desktop
- Chromium-based browsers using vulnerable V8 builds
- Downstream Chromium derivatives that had not yet integrated the upstream V8 fix
Discovery Timeline
- 2024-08-06 - CVE-2024-7535 published to NVD
- 2024-10-24 - Last updated in NVD database
Technical Details for CVE-2024-7535
Vulnerability Analysis
The vulnerability resides in V8, the JavaScript and WebAssembly engine that powers Chrome. Google's advisory describes the issue as an inappropriate implementation in V8 leading to potential heap corruption. The underlying weakness maps to [CWE-787], an out-of-bounds write condition. An attacker who serves a crafted HTML page can coerce V8 into writing memory outside the bounds of an intended buffer or object on the heap. Heap corruption in V8 typically produces conditions that can be shaped into arbitrary read/write primitives within the renderer sandbox.
Root Cause
The defect originates in V8's handling of specific JavaScript operations where an implementation flaw permits the engine to operate on memory in a manner inconsistent with the assumed object layout. When the engine processes maliciously structured script content, internal invariants break, allowing writes that exceed allocated boundaries. Refer to the Chromium Issue Tracker Entry and the Google Chrome Stable Update for upstream details.
Attack Vector
Exploitation is network-based and requires user interaction. The attacker hosts or injects a crafted HTML page containing JavaScript that triggers the V8 defect. When a user navigates to the page, the renderer process parses the script and the heap corruption is triggered. Successful exploitation can lead to code execution within the renderer, which adversaries typically chain with a sandbox escape to achieve broader system compromise. The vulnerability is not listed in CISA KEV, and no public exploit is currently available.
No verified public proof-of-concept code is available. Technical specifics remain restricted within the Chromium issue tracker pending wider patch adoption.
Detection Methods for CVE-2024-7535
Indicators of Compromise
- Unexpected renderer process crashes in Chrome with stack traces referencing V8 internals or heap allocator failures.
- Outbound connections from chrome.exe child processes to unfamiliar domains immediately after browsing activity.
- Spawning of unexpected child processes from the Chrome renderer, indicating possible sandbox escape attempts.
Detection Strategies
- Monitor Chrome version telemetry across the fleet and flag any endpoint running a build older than 127.0.6533.99.
- Inspect web proxy and DNS logs for connections to newly registered or low-reputation domains that deliver heavily obfuscated JavaScript.
- Correlate browser crash reports with subsequent process or persistence activity on the same host.
Monitoring Recommendations
- Enable centralized collection of Chrome crash dumps and review entries citing V8 functions.
- Track EDR telemetry for anomalous activity originating from Chrome renderer or GPU processes.
- Apply OCSF-normalized logging across browser, endpoint, and network sources to enable correlated hunting across the attack chain.
How to Mitigate CVE-2024-7535
Immediate Actions Required
- Update Google Chrome to version 127.0.6533.99 or later on all Windows, macOS, and Linux endpoints.
- Restart browser instances after deployment to ensure the patched V8 binary is loaded.
- Audit Chromium-based browsers and embedded WebView components for downstream patch availability and apply updates.
Patch Information
Google released the fix in the Chrome Stable channel update for desktop on August 6, 2024. Users should upgrade to 127.0.6533.99 (Linux) or 127.0.6533.99/.100 (Windows and macOS). See the Google Chrome Stable Update for the full advisory and version matrix.
Workarounds
- Enforce Chrome auto-update policies through enterprise management to prevent users from running outdated builds.
- Restrict browsing to trusted sites via DNS filtering or secure web gateways until patching is complete.
- Disable JavaScript on untrusted origins through enterprise policy where operational requirements permit.
# Verify Chrome version on Linux endpoints
google-chrome --version
# Enterprise policy enforcement (Windows registry)
reg add "HKLM\Software\Policies\Google\Update" /v UpdateDefault /t REG_DWORD /d 1 /f
reg add "HKLM\Software\Policies\Google\Update" /v AutoUpdateCheckPeriodMinutes /t REG_DWORD /d 60 /f
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
