CVE-2021-29955

Reference Links

• https://bugzilla.mozilla.org/show_bug.cgi?id=1692972
• https://www.mozilla.org/en-US/security/advisories/mfsa2021-10/
• https://www.mozilla.org/en-US/security/advisories/mfsa2021-11/
• https://www.mozilla.org/security/advisories/mfsa2021-10/
• https://www.mozilla.org/security/advisories/mfsa2021-11/

Parent vulnerabilities

(Appears in the following advisories)

• MFSA2021-10
• MFSA2021-11

Peer vulnerabilities

(Found alongside the following vulnerabilities)

• CVE-2021-29955
• CVE-2021-23981
• CVE-2021-29951
• CVE-2021-23982
• CVE-2021-23983
• CVE-2021-23984
• CVE-2021-23985
• CVE-2021-23986
• CVE-2021-23987
• CVE-2021-23988
• CVE-2021-4127

Frequently Asked Questions

• What is the severity of CVE-2021-29955?

  CVE-2021-29955 is rated as a high-severity vulnerability due to its potential for leaking arbitrary memory addresses.

• How do I fix CVE-2021-29955?

  To mitigate CVE-2021-29955, update to Mozilla Firefox version 87 or later or apply the relevant security patches provided by Mozilla.

• What software is affected by CVE-2021-29955?

  CVE-2021-29955 affects Mozilla Firefox versions prior to 87 and Firefox ESR versions before 78.9.

• What types of attacks can CVE-2021-29955 enable?

  CVE-2021-29955 may enable attackers to conduct JIT type confusion attacks due to memory leakage.

• Is there a workaround for CVE-2021-29955?

  There are no specific workarounds for CVE-2021-29955, the best course of action is to update to the latest version of the affected software.