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| Vulnerability ID | VCID-f67m-wxdu-aaak |
| Aliases |
CVE-2020-16040
|
| Summary | Insufficient data validation in V8 in Google Chrome prior to 87.0.4280.88 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. |
| Status | Published |
| Exploitability | 2.0 |
| Weighted Severity | 8.0 |
| Risk | 10.0 |
| Affected and Fixed Packages | Package Details |
| CWE-20 | Improper Input Validation |
| CWE-787 | Out-of-bounds Write |
| CWE-190 | Integer Overflow or Wraparound |
| Data source | Exploit-DB |
|---|---|
| Date added | April 6, 2021 |
| Description | Google Chrome 86.0.4240 V8 - Remote Code Execution |
| Ransomware campaign use | Unknown |
| Source publication date | April 6, 2021 |
| Exploit type | remote |
| Platform | multiple |
| Source update date | April 7, 2021 |
| Data source | Metasploit |
|---|---|
| Description | This module exploits an issue in Google Chrome versions before 87.0.4280.88 (64 bit). The exploit makes use of an integer overflow in the SimplifiedLowering phase in turbofan. It is used along with a type hardening bypass using ArrayPrototypeShift to create a JSArray with a length of -1. This is abused to gain arbitrary read/write into the isolate region. Then an ArrayBuffer can be used to achieve absolute arbitrary read/write. The exploit then uses WebAssembly in order to allocate a region of RWX memory, which is then replaced with the payload shellcode. The payload is executed within the sandboxed renderer process, the browser must be run with the --no-sandbox option for the payload to work correctly. |
| Note | Reliability: - repeatable-session SideEffects: - ioc-in-logs Stability: - crash-service-restarts |
| Ransomware campaign use | Unknown |
| Source publication date | Nov. 19, 2020 |
| Source URL | https://github.com/rapid7/metasploit-framework/tree/master/modules/exploits/multi/browser/chrome_simplifiedlowering_overflow.rb |
| Exploitability (E) | Access Vector (AV) | Access Complexity (AC) | Authentication (Au) | Confidentiality Impact (C) | Integrity Impact (I) | Availability Impact (A) |
|---|---|---|---|---|---|---|
high functional unproven proof_of_concept not_defined |
local adjacent_network network |
high medium low |
multiple single none |
none partial complete |
none partial complete |
none partial complete |
| Attack Vector (AV) | Attack Complexity (AC) | Privileges Required (PR) | User Interaction (UI) | Scope (S) | Confidentiality Impact (C) | Integrity Impact (I) | Availability Impact (A) |
|---|---|---|---|---|---|---|---|
network adjacent_network local physical |
low high |
none low high |
none required |
unchanged changed |
high low none |
high low none |
high low none |
| Attack Vector (AV) | Attack Complexity (AC) | Privileges Required (PR) | User Interaction (UI) | Scope (S) | Confidentiality Impact (C) | Integrity Impact (I) | Availability Impact (A) |
|---|---|---|---|---|---|---|---|
network adjacent_network local physical |
low high |
none low high |
none required |
unchanged changed |
high low none |
high low none |
high low none |
| Percentile | 0.97279 |
| EPSS Score | 0.37457 |
| Published At | Nov. 1, 2024, midnight |
| Date | Actor | Action | Source | VulnerableCode Version |
|---|---|---|---|---|
| There are no relevant records. | ||||