Name: CVE-2023-6857: Concurrent Execution using Shared Resource with Improper Synchronization
Creator: Rapid7
Published: 2023-12-19T00:00:00.000Z
License: https://www.rapid7.com/legal/website-terms-of-use/
Keywords: CVE, CVE-2023-6857, CWE-362, CVSS 5.3, EPSS 0.00247

When resolving a symlink, a race may occur where the buffer passed to `readlink` may actually be smaller than necessary. *This bug only affects Firefox on Unix-based operating systems (Android, Linux, MacOS). Windows is unaffected.* This vulnerability affects Firefox ESR < 115.6, Thunderbird < 115.6, and Firefox < 121.

CVSS Details

CVSS 3.1 Base Score: 5.3
CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N)

Covered by Rapid7

Product	Vendor Advisory	Solution File	Added	Published
Alma_linux	—	Upgrade thunderbirdUpgrade firefoxUpgrade firefox-x11	Jan 5, 2024	Dec 19, 2023
Alpine Linux	—	Upgrade thunderbirdUpgrade firefoxUpgrade firefox-esr	Aug 22, 2024	Dec 19, 2023
Amazon Linux Ami 2	—	Upgrade thunderbirdUpgrade firefox-debuginfoUpgrade thunderbird-debuginfoUpgrade firefox	Jan 10, 2024	Dec 19, 2023
Centos_linux	—	Upgrade firefox-debuginfoUpgrade thunderbirdUpgrade firefoxUpgrade thunderbird-debuginfo	Jan 3, 2024	Dec 19, 2023
Debian	—	Upgrade firefox-esrUpgrade thunderbird	Dec 27, 2023	Dec 19, 2023
Gentoo Linux	—	Upgrade mail-client/thunderbird.Upgrade www-client/firefox-bin.Upgrade www-client/firefox.Upgrade mail-client/thunderbird-bin.	Jan 8, 2024	Dec 19, 2023
Oracle_linux	—	Upgrade firefox-x11Upgrade firefoxUpgrade thunderbird	Jan 3, 2024	Dec 19, 2023
Redhat_linux	—	Upgrade firefoxNo solution existsUpgrade thunderbirdUpgrade thunderbird-debuginfoUpgrade firefox-debuginfoUpgrade firefox-x11Upgrade thunderbird-debugsourceUpgrade firefox-debugsource	Jan 3, 2024	Dec 19, 2023
Rocky_linux	—	—	Aug 15, 2024	Dec 19, 2023
Suse	—	Upgrade MozillaThunderbird-translations-commonUpgrade MozillaFirefoxUpgrade MozillaThunderbirdUpgrade MozillaThunderbird-translations-otherUpgrade MozillaFirefox-develUpgrade MozillaFirefox-translations-commonUpgrade MozillaFirefox-translations-otherUpgrade mozillafirefox-branding-upstream	Dec 20, 2023	Dec 19, 2023
Ubuntu	—	Upgrade thunderbirdUpgrade firefox	Jan 3, 2024	Dec 19, 2023

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CVSS Details

Covered by Rapid7

Prioritise with Active Threat Intelligence