CVE-2021-29962: Medium severity Mozilla Firefox vulnerability

Published Jun 1, 2021
·
Updated

Firefox for Android would become unstable and hard-to-recover when a website opened too many popups. This bug only affects Firefox for Android. Other operating systems are unaffected.

Other sources

Firefox for Android would become unstable and hard-to-recover when a website opened too many popups. This bug only affects Firefox for Android. Other operating systems are unaffected.. This vulnerability affects Firefox < 89.

Affected Software

17 affected componentsFixes available
Mozilla Firefox<89
89
Mozilla Firefox Android<89.0
alpine/firefox<89.0-r0
89.0-r0
alpine/firefox<89.0-r0
89.0-r0
alpine/firefox<89.0-r0
89.0-r0
alpine/firefox<89.0-r0
89.0-r0
alpine/firefox<89.0-r0
89.0-r0
alpine/firefox<89.0-r0
89.0-r0
alpine/firefox<89.0-r0
89.0-r0
alpine/firefox<89.0-r0
89.0-r0
alpine/firefox<89.0-r0
89.0-r0
alpine/firefox<89.0-r0
89.0-r0
alpine/firefox<89.0-r0
89.0-r0
alpine/librewolf<89.0-r0
89.0-r0
alpine/librewolf<89.0-r0
89.0-r0
alpine/librewolf<89.0-r0
89.0-r0
alpine/librewolf<89.0-r0
89.0-r0

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade Firefox to a version that resolves this vulnerability.

    Fixed in 89
  2. Upgrade

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

    Fixed in 89.0-r0
  3. Upgrade

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

    Fixed in 89.0-r0

Event History

Jun 1, 2021
CVE Published
12:00 AM
Jun 24, 2021
CVE Published
via MITRE·01:15 PM
Data Sourced
via MITRE·01:15 PM
DescriptionWeakness
Data Sourced
via NVD·02:15 PM
DescriptionSeverityWeaknessAffected Software
Data Sourced
via OSV·02:15 PM
DescriptionSeverityAffected Software

Parent advisories

This vulnerability appears in the following advisories.

Frequently Asked Questions

1

What is the severity of CVE-2021-29962?

CVE-2021-29962 is classified as a moderate severity vulnerability affecting Firefox for Android.

2

How do I fix CVE-2021-29962?

To fix CVE-2021-29962, update Firefox for Android to version 89 or later.

3

What effects can CVE-2021-29962 have on Firefox for Android?

CVE-2021-29962 can cause Firefox for Android to become unstable and hard-to-recover when a website opens too many popups.

4

Is CVE-2021-29962 present in versions of Firefox for Android after 89?

No, CVE-2021-29962 does not affect versions of Firefox for Android beyond version 89.

5

Are other operating systems affected by CVE-2021-29962?

No, only Firefox for Android is affected by CVE-2021-29962, with other operating systems remaining unaffected.

Contact

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