Mozilla Firefox up to 118.0.1 cross-domain policy

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.7$5k-$25k0.00

Summaryinfo

A vulnerability, which was classified as critical, has been found in Mozilla Firefox up to 118.0.1. This affects an unknown part. This manipulation causes cross-domain policy. This vulnerability appears as CVE-2023-5722. The attack may be initiated remotely. There is no available exploit. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in Mozilla Firefox up to 118.0.1 (Web Browser). It has been declared as critical. Affected by this vulnerability is an unknown functionality. The manipulation with an unknown input leads to a cross-domain policy vulnerability. The CWE definition for the vulnerability is CWE-942. The product uses a cross-domain policy file that includes domains that should not be trusted. As an impact it is known to affect confidentiality, integrity, and availability.

The weakness was presented 10/24/2023 by annevk as Bug 1738426 as confirmed advisory (Website). It is possible to read the advisory at bugzilla.mozilla.org. The advisory contains:

Using iterative requests an attacker was able to learn the size of an opaque response, as well as the contents of a server-supplied Vary header.
This vulnerability is known as CVE-2023-5722. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 08/06/2025).

The vulnerability scanner Nessus provides a plugin with the ID 243386 (Linux Distros Unpatched Vulnerability : CVE-2023-5722), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 119 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (243386). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

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Version

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.8
VulDB Meta Temp Score: 5.7

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.3
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Cross-domain policy
CWE: CWE-942 / CWE-346 / CWE-345
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 243386
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2023-5722

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Upgrade: Firefox 119

Timelineinfo

10/23/2023 🔍
10/24/2023 +1 days 🔍
10/24/2023 +0 days 🔍
10/24/2023 +0 days 🔍
08/06/2025 +652 days 🔍

Sourcesinfo

Vendor: mozilla.org
Product: mozilla.org

Advisory: Bug 1738426
Researcher: annevk
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2023-5722 (🔍)
GCVE (CVE): GCVE-0-2023-5722
GCVE (VulDB): GCVE-100-243223

Entryinfo

Created: 10/24/2023 21:12
Updated: 08/06/2025 02:01
Changes: 10/24/2023 21:12 (17), 10/24/2023 21:16 (28), 11/15/2023 10:27 (2), 11/15/2023 10:33 (11), 08/06/2025 02:01 (17)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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