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Vulnerability · Published Oct 24, 2023 · Assigned by mozilla

CVE-2023-5721

Medium 4.3

In plain English

A medium-severity security flaw in Firefox from Mozilla. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.8% (higher than 57% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS NVD)4.3Medium
Exploit odds (30 days)0.8%top 43.0% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

It was possible for certain browser prompts and dialogs to be activated or dismissed unintentionally by the user due to an insufficient activation-delay. This vulnerability affects Firefox < 119, Firefox ESR < 115.4, and Thunderbird < 115.4.1.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
AlmaLinux:8firefox115.4.0-1.el8_8.alma.1ALSA-2023:6187
AlmaLinux:9firefox115.4.0-1.el9_2.alma.1ALSA-2023:6188
AlmaLinux:9firefox-x11115.4.0-1.el9_2.alma.1ALSA-2023:6188
AlmaLinux:8thunderbird115.4.1-1.el8_8.alma.1ALSA-2023:6194
AlmaLinux:9thunderbird115.4.1-1.el9_2.almaALSA-2023:6191
Alpine:v3.20firefox119.0-r0ALPINE-CVE-2023-5721
Alpine:v3.21firefox119.0-r0ALPINE-CVE-2023-5721
Alpine:v3.22firefox119.0-r0ALPINE-CVE-2023-5721
Alpine:v3.23firefox119.0-r0ALPINE-CVE-2023-5721
Alpine:v3.20firefox-esr115.4.0-r0ALPINE-CVE-2023-5721
Alpine:v3.21firefox-esr115.4.0-r0ALPINE-CVE-2023-5721
Alpine:v3.22firefox-esr115.4.0-r0ALPINE-CVE-2023-5721
Alpine:v3.23firefox-esr115.4.0-r0ALPINE-CVE-2023-5721
Alpine:v3.22librewolf119.0-r0ALPINE-CVE-2023-5721
Alpine:v3.23librewolf119.0-r0ALPINE-CVE-2023-5721
Alpine:v3.24librewolf119.0-r0ALPINE-CVE-2023-5721
Alpine:v3.20thunderbird115.4.1-r0ALPINE-CVE-2023-5721
Alpine:v3.21thunderbird115.4.1-r0ALPINE-CVE-2023-5721
Alpine:v3.22thunderbird115.4.1-r0ALPINE-CVE-2023-5721
Alpine:v3.23thunderbird115.4.1-r0ALPINE-CVE-2023-5721
Debian:12firefox-esr115.4.0esr-1~deb12u1DSA-5535-1
Debian:12firefox-esr115.4.0esr-1~deb12u1DEBIAN-CVE-2023-5721
Debian:13firefox-esr115.4.0esr-1DEBIAN-CVE-2023-5721
Debian:14firefox-esr115.4.0esr-1DEBIAN-CVE-2023-5721
Debian:12thunderbird1:115.4.1-1~deb12u1DEBIAN-CVE-2023-5721
Debian:12thunderbird1:115.4.1-1~deb12u1DSA-5538-1
Debian:13thunderbird1:115.4.1-1DEBIAN-CVE-2023-5721
Debian:14thunderbird1:115.4.1-1DEBIAN-CVE-2023-5721
Rocky Linux:9firefox0:115.4.0-1.el9_2RLSA-2023:6188
Ubuntu:22.04:LTSmozjs102no fix listedUBUNTU-CVE-2023-5721
Ubuntu:24.04:LTSmozjs102no fix listedUBUNTU-CVE-2023-5721
Ubuntu:22.04:LTSmozjs78no fix listedUBUNTU-CVE-2023-5721
Ubuntu:22.04:LTSmozjs91no fix listedUBUNTU-CVE-2023-5721
Ubuntu:22.04:LTSthunderbird1:115.4.1+build1-0ubuntu0.22.04.1USN-6468-1
Ubuntu:22.04:LTSthunderbird1:115.4.1+build1-0ubuntu0.22.04.1UBUNTU-CVE-2023-5721
Ubuntu:24.04:LTSthunderbird1:115.4.1+build1-0ubuntu1UBUNTU-CVE-2023-5721

Affected products (as reported)

VendorProductVersions
Mozilla Firefox unspecified – before 119
Mozilla Firefox ESR unspecified – before 115.4
Mozilla Thunderbird unspecified – before 115.4.1

References