VulnerabilityModified

CVE-2021-21157

Use after free in Web Sockets in Google Chrome on Linux prior to 88.0.4324.182 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.

HIGH 8.8EPSS 9.46%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (9.46%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

Use after free in Web Sockets in Google Chrome on Linux prior to 88.0.4324.182 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.

CVSS 3.1: 8.8 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS: 9.46% probability · 95th percentile
CISA KEV: Not listed
Weakness: CWE-416
Affected: microsoft/edge · microsoft/edge chromium · fedoraproject/fedora · google/chrome
Source: chrome-cve-admin@google.com

References

https://chromereleases.googleblog.com/2021/02/stable-channel-update-for-desktop_16.htmlRelease Notes, Vendor Advisory
https://crbug.com/1170657Exploit, Issue Tracking, Patch, Permissions Required, Vendor Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BI6ZIJQYP5DFMYVX4J5OGOU2NQLEZ3SB/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FE5SIKEVYTMDCC5OSXGOM2KRPYLHYMQX/
https://security.gentoo.org/glsa/202104-08Third Party Advisory
https://chromereleases.googleblog.com/2021/02/stable-channel-update-for-desktop_16.htmlRelease Notes, Vendor Advisory
https://crbug.com/1170657Exploit, Issue Tracking, Patch, Permissions Required, Vendor Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BI6ZIJQYP5DFMYVX4J5OGOU2NQLEZ3SB/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FE5SIKEVYTMDCC5OSXGOM2KRPYLHYMQX/
https://security.gentoo.org/glsa/202104-08Third Party Advisory

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.