CVE-2021-29963: Medium severity Mozilla Firefox vulnerability

Published Jun 1, 2021
·
Updated

Address bar search suggestions in private browsing mode were re-using session data from normal mode. This bug only affects Firefox for Android. Other operating systems are unaffected.

Other sources

Address bar search suggestions in private browsing mode were re-using session data from normal mode. 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-2021-29963?

CVE-2021-29963 is considered a moderate severity vulnerability affecting Firefox for Android.

2

How do I fix CVE-2021-29963?

To fix CVE-2021-29963, update your Firefox for Android to version 89 or later.

3

Which software versions are affected by CVE-2021-29963?

CVE-2021-29963 affects Firefox for Android versions prior to 89.

4

Does CVE-2021-29963 affect desktop versions of Firefox?

No, CVE-2021-29963 only affects the Android version of Firefox, not desktop versions.

5

How does CVE-2021-29963 impact user privacy?

CVE-2021-29963 can lead to unintended exposure of session data from normal browsing in private mode.

Contact

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