CVE-2021-30890: XSS

Published Aug 24, 2021
·
Updated

A flaw was found in WebKitGTK. A logic issue was addressed with improved state management.

References: https://webkitgtk.org/security/WSA-2021-0007.html https://www.openwall.com/lists/oss-security/2021/12/20/6

Other sources

A logic issue was addressed with improved state management. This issue is fixed in macOS Monterey 12.0.1, iOS 15.1 and iPadOS 15.1, watchOS 8.1, tvOS 15.1. Processing maliciously crafted web content may lead to universal cross site scripting.

WebKit. A logic issue was addressed with improved state management.

Credit

an anonymous researcher

Affected Software

23 affected componentsFixes available
debian/webkit2gtk
2.36.4-1~deb10u12.38.6-0+deb10u12.40.5-1~deb11u12.42.1-1~deb11u22.40.5-1~deb12u12.42.1-1~deb12u12.42.1-2
debian/wpewebkit
2.38.6-1~deb11u12.38.6-12.42.1-1
Apple tvOS<15.1
15.1
Apple WatchOS<8.1
8.1
Apple macOS Monterey<12.0.1
12.0.1
Apple Safari<15.1
15.1
Apple iOS<15.1
15.1
Apple iPadOS<15.1
15.1
Apple iPadOS<15.1
Apple iPhone OS<15.1
Apple macOS<12.0.1
Apple tvOS<15.1
Apple WatchOS<8.1
Fedoraproject Fedora=34
Fedoraproject Fedora=35
Debian Debian Linux=10.0
Debian Debian Linux=11.0
redhat/webkitgtk<2.34.3
2.34.3
alpine/webkit2gtk<2.34.3-r0
2.34.3-r0
alpine/webkit2gtk<2.34.3-r0
2.34.3-r0
alpine/webkit2gtk<2.34.3-r0
2.34.3-r0
alpine/webkit2gtk<2.34.3-r0
2.34.3-r0
alpine/webkit2gtk<2.34.3-r0
2.34.3-r0

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade debian/webkit2gtk to a version that resolves this vulnerability.

    Fixed in 2.36.4-1~deb10u1Fixed in 2.38.6-0+deb10u1Fixed in 2.40.5-1~deb11u1Fixed in 2.42.1-1~deb11u2Fixed in 2.40.5-1~deb12u1Fixed in 2.42.1-1~deb12u1Fixed in 2.42.1-2
  2. Upgrade

    Upgrade debian/wpewebkit to a version that resolves this vulnerability.

    Fixed in 2.38.6-1~deb11u1Fixed in 2.38.6-1Fixed in 2.42.1-1
  3. Upgrade

    Upgrade tvOS to a version that resolves this vulnerability.

    Fixed in 15.1
  4. Upgrade

    Upgrade Apple iOS, iPadOS, and watchOS to a version that resolves this vulnerability.

    Fixed in 8.1
  5. Upgrade

    Upgrade macOS to a version that resolves this vulnerability.

    Fixed in 12.0.1
  6. Upgrade

    Upgrade Safari to a version that resolves this vulnerability.

    Fixed in 15.1
  7. Upgrade

    Upgrade Apple iOS and iPadOS to a version that resolves this vulnerability.

    Fixed in 15.1
  8. Upgrade

    Upgrade Apple iOS, iPadOS, and macOS to a version that resolves this vulnerability.

    Fixed in 15.1
  9. Upgrade

    Upgrade redhat/webkitgtk to a version that resolves this vulnerability.

    Fixed in 2.34.3
  10. Upgrade

    Upgrade alpine/webkit2gtk to a version that resolves this vulnerability.

    Fixed in 2.34.3-r0
  11. Upgrade

    Upgrade macOS Monterey to a version that resolves this vulnerability.

    Fixed in 12.0.1
  12. Upgrade

    Upgrade iOS/iPadOS to a version that resolves this vulnerability.

    Fixed in 15.1
  13. Upgrade

    Upgrade watchOS to a version that resolves this vulnerability.

    Fixed in 8.1

Event History

Aug 24, 2021
CVE Published
via MITRE·06:49 PM
Data Sourced
via MITRE·06:49 PM
DescriptionWeakness
Data Sourced
via NVD·07:15 PM
DescriptionSeverityWeaknessAffected Software
Data Sourced
via OSV·07:15 PM
DescriptionSeverityAffected Software
Dec 20, 2021
Data Sourced
via Red Hat·07:25 PM
DescriptionSeverityAffected Software

Parent advisories

This vulnerability appears in the following advisories.

Peer vulnerabilities

Found alongside the following vulnerabilities.

Frequently Asked Questions

1

What is CVE-2021-30890?

CVE-2021-30890 is a vulnerability in WebKit that is caused by a logic issue and has been addressed with improved state management.

2

Which software versions are affected by CVE-2021-30890?

CVE-2021-30890 affects the following software versions: Apple Safari up to version 15.1, Apple macOS Monterey up to version 12.0.1, Apple iOS up to version 15.1, Apple iPadOS up to version 15.1, Apple tvOS up to version 15.1, Apple watchOS up to version 8.1.

3

How severe is CVE-2021-30890?

The severity of CVE-2021-30890 has not been specified.

4

How can I fix CVE-2021-30890?

To fix CVE-2021-30890, it is recommended to update to the latest version of the affected software. Apple has released updates to address this vulnerability.

5

Where can I find more information about CVE-2021-30890?

You can find more information about CVE-2021-30890 on the Apple support website. Here are the references: [link](https://support.apple.com/en-us/HT212867), [link](https://support.apple.com/en-us/HT212874), [link](https://support.apple.com/en-us/HT212875).

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