CVE-2018-6065highunder attackCWE-190

CVE-2018-6065: high-severity vulnerability in Google Chrome

Published · Updated

83Vexday Risk Score

Prioritize patching. It under exploitation confirmed by CISA and has a public proof of concept.

ssvc Actcvss 8.8epss 60%
from disclosure to weapon0 days
Published on NVDNov 14
1st PoCMay 4
CISA KEV+1302d
exploitation probability
60%top 1% of all CVEs
observed exploitation
yesCISA + VulnCheck
4 public exploit(s)
What the vendors declare (VEX)

Official vendor statements in CSAF/VEX format: whether their product is affected, already fixed, or ruled out — and why. These are the vendor's assertions, not Vexday's judgment.

Red HatVEX document ↗
Fixed
3 products (12 components)
Red Hat Enterprise Linux Desktop Supplementary (v. 6) · Red Hat Enterprise Linux Server Supplementary (v. 6) · Red Hat Enterprise Linux Workstation Supplementary (v. 6)
fix ↗
Action required by CISAfederal deadline: 2022-06-22

Apply updates per vendor instructions.

In short

Google Chrome's JavaScript engine had a flaw where it miscalculated memory size when creating objects, allowing attackers to corrupt the browser's memory through a malicious webpage.

Technical detail

Integer overflow in V8's object instantiation allocation size calculation allowed remote attackers to trigger heap corruption via crafted HTML; exploitation requires user to visit attacker-controlled page, potentially leading to code execution or memory-based attacks.

Summary generated and translated by AI from the official description.

The full analysis of this CVE is available in Portuguese →

Integer overflow in computing the required allocation size when instantiating a new javascript object in V8 in Google Chrome prior to 65.0.3325.146 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Affected products
Google · Chrome
public PoCs found — 4✓ VexDay Proof
exploitdb✓ VexDay Proofwww.exploit-db.com/exploits/44584githubgithub.com/b1tg/CVE-2018-6065-exploit★ 2cve_referencewww.exploit-db.com/exploits/44584/unverifiedvulncheckvulncheck.com/xdb/e7c218d4bb1aunverified
⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
Related CVEs — Google Chrome

In the same product, most dangerous first.

CVE-2023-4863HIGHCVE-2023-4863EPSS 100.0%KEVCVE-2018-17463HIGHCVE-2018-17463EPSS 84.6%KEVCVE-2021-21224HIGHCVE-2021-21224EPSS 84.2%KEVCVE-2020-6418HIGHCVE-2020-6418EPSS 78.8%KEVCVE-2022-2294HIGHCVE-2022-2294EPSS 70.5%KEVCVE-2021-21220HIGHCVE-2021-21220EPSS 70.4%KEV
References
https://access.redhat.com/errata/RHSA-2018:0484https://chromereleases.googleblog.com/2018/03/stable-channel-update-for-desktop.htmlhttps://crbug.com/808192https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-6065https://www.debian.org/security/2018/dsa-4182https://www.exploit-db.com/exploits/44584/https://www.zerodayinitiative.com/advisories/ZDI-19-367/http://www.securityfocus.com/bid/103297