CVE-2019-5786 : Object lifetime issue in Blink in Google Chrome prior to 72.0.3626.121 allowed a

Object lifetime issue in Blink in Google Chrome prior to 72.0.3626.121 allowed a remote attacker to potentially perform out of bounds memory access via a crafted HTML page.

Published 2019-06-27 17:15:14

Updated 2025-02-05 13:59:26

Source Chrome

View at NVD, CVE.org

Products affected by CVE-2019-5786

Google » Chrome
Versions before (<) 72.0.3626.121
cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*
Matching versions

CVE-2019-5786 is in the CISA Known Exploited Vulnerabilities Catalog

CISA vulnerability name:

Google Chrome Blink Use-After-Free Vulnerability

CISA required action:

Apply updates per vendor instructions.

CISA description:

Google Chrome Blink contains a heap use-after-free vulnerability that allows an attacker to potentially perform out of bounds memory access via a crafted HTML page.

Notes:

https://nvd.nist.gov/vuln/detail/CVE-2019-5786

Added on 2022-05-23 Action due date 2022-06-13

Exploit prediction scoring system (EPSS) score for CVE-2019-5786

EPSS FAQ

90.28%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 100 %

Percentile, the proportion of vulnerabilities that are scored at or less

Metasploit modules for CVE-2019-5786

Chrome 72.0.3626.119 FileReader UaF exploit for Windows 7 x86

Disclosure Date: 2019-03-21

First seen: 2020-04-26

exploit/windows/browser/chrome_filereader_uaf

This exploit takes advantage of a use after free vulnerability in Google Chrome 72.0.3626.119 running on Windows 7 x86. The FileReader.readAsArrayBuffer function can return multiple references to the same ArrayBuffer object, which can be freed and overwritten with spraye

More information

CVSS scores for CVE-2019-5786

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source	First Seen
4.3	MEDIUM	AV:N/AC:M/Au:N/C:N/I:N/A:P	8.6	2.9	NIST
Access Vector: Network Access Complexity: Medium Authentication: None Confidentiality Impact: None Integrity Impact: None Availability Impact: Partial
6.5	MEDIUM	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H	2.8	3.6	134c704f-9b21-4f2e-91b3-4a467353bcc0	2025-02-03
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: Required Scope: Unchanged Confidentiality: None Integrity: None Availability: High
6.5	MEDIUM	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H	2.8	3.6	NIST
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: Required Scope: Unchanged Confidentiality: None Integrity: None Availability: High

CWE ids for CVE-2019-5786

CWE-416 Use After Free

The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.
Assigned by:
- 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary)
- nvd@nist.gov (Primary)

References for CVE-2019-5786

https://crbug.com/936448

936448 - Heap-use-after-free WRITE 4 · v8::internal::ElementsAccessorBase - chromium - Monorail
Exploit;Issue Tracking
https://chromereleases.googleblog.com/2019/03/stable-channel-update-for-desktop.html

Chrome Releases: Stable Channel Update for Desktop
Release Notes;Vendor Advisory

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Vulnerability Details : CVE-2019-5786