CVE-2021-21119: Use after free in Media

Reference Links

• https://chromereleases.googleblog.com/2021/01/stable-channel-update-for-desktop_19.html (Advisory)
• https://crbug.com/1160534
• https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-21119

Parent vulnerabilities

(Appears in the following advisories)

• 8963246051762193641

Peer vulnerabilities

(Found alongside the following vulnerabilities)

• CVE-2021-21117
• CVE-2021-21118
• CVE-2021-21120
• CVE-2021-21121
• 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-2021-21119?

  CVE-2021-21119 has a high severity rating due to its potential to allow remote code execution through heap corruption.

• How do I fix CVE-2021-21119?

  To mitigate CVE-2021-21119, update Google Chrome or Microsoft Edge Chromium to version 88.0.4324.96 or 88.0.705.50 respectively.

• What causes the vulnerability CVE-2021-21119?

  CVE-2021-21119 is caused by a use after free condition in the Media component of Google Chrome.

• Who is affected by CVE-2021-21119?

  Users of Google Chrome versions prior to 88.0.4324.96 and Microsoft Edge Chromium versions prior to 88.0.705.50 are affected by CVE-2021-21119.

• Can CVE-2021-21119 be exploited remotely?

  Yes, CVE-2021-21119 can potentially be exploited remotely by attackers through a crafted HTML page.