Medium severity · published Jun 7, 2021
CVE-2021-30533
Google Chromium PopupBlocker Security Bypass Vulnerability
In wildKEV
6.5
CVSS
16.7%
EPSS
Yes
On KEV
Description
Insufficient policy enforcement in PopupBlocker in Google Chrome prior to 91.0.4472.77 allowed a remote attacker to bypass navigation restrictions via a crafted iframe.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
None
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)16.7% · higher than 97% of CVEs
Exploited in the wildYes
CISA KEVListed Jun 27, 2022
Federal remediation dueJul 18, 2022
Ransomware campaign useNot known
Affected products
Which versions
CH
Chrome · Google
before 91.0.4472.77 · source: vendor, NVD
FE
Fedora · Fedoraproject
33; 34 · source: NVD
CP
Chromium PopupBlocker · Google
All versions, or not specified · source: KEV
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-30533
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-30533
CISA KEV catalogue
https://www.cisa.gov/known-exploited-vulnerabilities-catalog
x_refsource_MISC
https://chromereleases.googleblog.com/2021/05/stable-channel-update-for-desktop_25.html
x_refsource_MISC
https://crbug.com/1145553
vendor-advisory
https://security.gentoo.org/glsa/202107-06
vendor-advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PAT6EOXVQFE6JFMFQF4IKAOUQSHMHL54/
vendor-advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ETMZL6IHCTCTREEL434BQ4THQ7EOHJ43/
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