medium
5.3
CWE
362
EPSS
0.113%
Advisory Published
CVE Published
Updated

CVE-2023-6857: Race Condition

First published: Tue Dec 19 2023(Updated: )

Last updated 24 July 2024

Credit: security@mozilla.org security@mozilla.org

Affected SoftwareAffected VersionHow to fix
Mozilla Firefox ESR<115.6
115.6
Mozilla Thunderbird<115.6
115.6
redhat/firefox<115.6
115.6
redhat/thunderbird<115.6
115.6
Mozilla Firefox<121
121
All of
Any of
Mozilla Firefox<121.0
Mozilla Firefox ESR<115.6
Mozilla Thunderbird<115.6
Any of
Apple macOS
Google Android
Linux Kernel
Debian Debian Linux=10.0
Debian Debian Linux=11.0
Debian Debian Linux=12.0
debian/firefox
134.0.2-2
debian/firefox-esr
115.14.0esr-1~deb11u1
128.6.0esr-1~deb11u3
128.5.0esr-1~deb12u1
128.6.0esr-1~deb12u1
128.6.0esr-4
debian/thunderbird
1:115.12.0-1~deb11u1
1:128.6.0esr-1~deb11u1
1:128.5.0esr-1~deb12u1
1:128.6.0esr-1~deb12u1
1:128.6.0esr-1

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Reference Links

Parent vulnerabilities

(Appears in the following advisories)

Peer vulnerabilities

(Found alongside the following vulnerabilities)

Frequently Asked Questions

  • What is the severity of CVE-2023-6857?

    CVE-2023-6857 is classified as a medium severity vulnerability, primarily affecting Firefox on Unix-based systems.

  • How do I fix CVE-2023-6857?

    To fix CVE-2023-6857, update Firefox or Thunderbird to version 115.6 or later.

  • Which software is affected by CVE-2023-6857?

    CVE-2023-6857 affects Firefox ESR, Mozilla Firefox, Thunderbird, and their respective package versions below 115.6.

  • On which operating systems does CVE-2023-6857 have an impact?

    CVE-2023-6857 impacts Unix-based operating systems, including Android, Linux, and MacOS, while Windows is unaffected.

  • Is there a workaround for CVE-2023-6857?

    Currently, the best approach for mitigating CVE-2023-6857 is to apply the recommended software updates.

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