Vulnerability · Published Oct 24, 2023 · Assigned by mozilla
CVE-2023-5732Address bar spoofing via bidirectional characters
Medium 6.5
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 1.0% (higher than 64% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)6.5Medium
Exploit odds (30 days)1.0%top 35.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
An attacker could have created a malicious link using bidirectional characters to spoof the location in the address bar when visited. This vulnerability affects Firefox < 117, Firefox ESR < 115.4, and Thunderbird < 115.4.1.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux:8 | firefox | 115.4.0-1.el8_8.alma.1 | ALSA-2023:6187 |
| AlmaLinux:9 | firefox | 115.4.0-1.el9_2.alma.1 | ALSA-2023:6188 |
| AlmaLinux:9 | firefox-x11 | 115.4.0-1.el9_2.alma.1 | ALSA-2023:6188 |
| AlmaLinux:8 | thunderbird | 115.4.1-1.el8_8.alma.1 | ALSA-2023:6194 |
| AlmaLinux:9 | thunderbird | 115.4.1-1.el9_2.alma | ALSA-2023:6191 |
| Alpine:v3.20 | firefox-esr | 115.4.0-r0 | ALPINE-CVE-2023-5732 |
| Alpine:v3.21 | firefox-esr | 115.4.0-r0 | ALPINE-CVE-2023-5732 |
| Alpine:v3.22 | firefox-esr | 115.4.0-r0 | ALPINE-CVE-2023-5732 |
| Alpine:v3.23 | firefox-esr | 115.4.0-r0 | ALPINE-CVE-2023-5732 |
| Alpine:v3.20 | thunderbird | 115.4.1-r0 | ALPINE-CVE-2023-5732 |
| Alpine:v3.21 | thunderbird | 115.4.1-r0 | ALPINE-CVE-2023-5732 |
| Alpine:v3.22 | thunderbird | 115.4.1-r0 | ALPINE-CVE-2023-5732 |
| Alpine:v3.23 | thunderbird | 115.4.1-r0 | ALPINE-CVE-2023-5732 |
| Debian:12 | firefox-esr | 115.4.0esr-1~deb12u1 | DEBIAN-CVE-2023-5732 |
| Debian:12 | firefox-esr | 115.4.0esr-1~deb12u1 | DSA-5535-1 |
| Debian:13 | firefox-esr | 115.4.0esr-1 | DEBIAN-CVE-2023-5732 |
| Debian:14 | firefox-esr | 115.4.0esr-1 | DEBIAN-CVE-2023-5732 |
| Debian:12 | thunderbird | 1:115.4.1-1~deb12u1 | DSA-5538-1 |
| Debian:12 | thunderbird | 1:115.4.1-1~deb12u1 | DEBIAN-CVE-2023-5732 |
| Debian:13 | thunderbird | 1:115.4.1-1 | DEBIAN-CVE-2023-5732 |
| Debian:14 | thunderbird | 1:115.4.1-1 | DEBIAN-CVE-2023-5732 |
| Rocky Linux:9 | firefox | 0:115.4.0-1.el9_2 | RLSA-2023:6188 |
| Ubuntu:22.04:LTS | thunderbird | 1:115.4.1+build1-0ubuntu0.22.04.1 | USN-6468-1 |
| Ubuntu:22.04:LTS | thunderbird | 1:115.4.1+build1-0ubuntu0.22.04.1 | UBUNTU-CVE-2023-5732 |
| Ubuntu:24.04:LTS | thunderbird | 1:115.4.1+build1-0ubuntu1 | UBUNTU-CVE-2023-5732 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Mozilla | Firefox | unspecified – before 117 |
| Mozilla | Firefox ESR | unspecified – before 115.4 |
| Mozilla | Thunderbird | unspecified – before 115.4.1 |
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=1690979
- https://bugzilla.mozilla.org/show_bug.cgi?id=1836962
- https://lists.debian.org/debian-lts-announce/2023/10/msg00037.html
- https://lists.debian.org/debian-lts-announce/2023/10/msg00042.html
- https://www.debian.org/security/2023/dsa-5535
- https://www.debian.org/security/2023/dsa-5538
- https://www.mozilla.org/security/advisories/mfsa2023-34/
- https://www.mozilla.org/security/advisories/mfsa2023-46/
- https://www.mozilla.org/security/advisories/mfsa2023-47/