CVE-2021-21121: Use after free in Omnibox
Use after free in Omnibox in Google Chrome on Linux prior to 88.0.4324.96 allowed a remote attacker to potentially perform a sandbox escape via a crafted HTML page.
Credit
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
Google Chrome (Trace Event)to a version that resolves this vulnerability.Fixed in 88.0.4324.96 - Upgrade
Upgrade
alpine/qt5-qtwebengineto a version that resolves this vulnerability.Fixed in 5.15.3_git20200401-r0
Event History
Peer vulnerabilities
Found alongside the following vulnerabilities.
- CVE-2021-21117
- CVE-2021-21118
- CVE-2021-21119
- CVE-2021-21120
- CVE-2021-21122
- CVE-2021-21123
- CVE-2021-21124
- CVE-2021-21125
- CVE-2020-16044
- CVE-2021-21126
- CVE-2021-21127
- CVE-2021-21128
- CVE-2021-21129
- CVE-2021-21130
- CVE-2021-21131
- CVE-2021-21132
- CVE-2021-21133
- CVE-2021-21134
- CVE-2021-21135
- CVE-2021-21136
- CVE-2021-21137
- CVE-2021-21138
- CVE-2021-21139
- CVE-2021-21140
- CVE-2021-21141
Frequently Asked Questions
What is the severity of CVE-2021-21121?
The severity of CVE-2021-21121 is considered high due to its potential for sandbox escape through crafted HTML.
How do I fix CVE-2021-21121?
To fix CVE-2021-21121, users should upgrade to Google Chrome version 88.0.4324.96 or later.
Who is affected by CVE-2021-21121?
CVE-2021-21121 affects Google Chrome on Linux and Microsoft Edge Chromium versions prior to 88.0.705.50.
What type of vulnerability is CVE-2021-21121?
CVE-2021-21121 is a use-after-free vulnerability that can allow remote attackers to escape the sandbox.
Can CVE-2021-21121 be exploited remotely?
Yes, CVE-2021-21121 can potentially be exploited remotely via a specially crafted HTML page.