Mozilla Thunderbird up to 115.3.1 Bidirectional Character clickjacking

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.3$0-$5k0.00

Summaryinfo

A vulnerability described as problematic has been identified in Mozilla Thunderbird up to 115.3.1. This affects an unknown part of the component Bidirectional Character Handler. The manipulation results in clickjacking. This vulnerability is cataloged as CVE-2023-5732. The attack may be launched remotely. There is no exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability classified as problematic has been found in Mozilla Thunderbird up to 115.3.1 (Mail Client Software). Affected is an unknown code block of the component Bidirectional Character Handler. The manipulation with an unknown input leads to a clickjacking vulnerability. CWE is classifying the issue as CWE-451. The user interface (UI) does not properly represent critical information to the user, allowing the information - or its source - to be obscured or spoofed. This is often a component in phishing attacks. This is going to have an impact on integrity.

The weakness was shared 10/24/2023 by Armin Ebert as Bug 1690979 as confirmed advisory (Website). The advisory is available at bugzilla.mozilla.org. The advisory contains:

An attacker could have created a malicious link using bidirectional characters to spoof the location in the address bar when visited.
This vulnerability is traded as CVE-2023-5732. Successful exploitation requires user interaction by the victim. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 11/24/2025). This vulnerability is assigned to T1566.003 by the MITRE ATT&CK project.

The vulnerability scanner Nessus provides a plugin with the ID 276142 (TencentOS Server 3: firefox (TSSA-2023:0261)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 115.4 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 (276142). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

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Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.4
VulDB Meta Temp Score: 5.3

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.5
NVD Vector: 🔍

CVSSv2info

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

Exploitinginfo

Class: Clickjacking
CWE: CWE-451
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: 276142
Nessus Name: TencentOS Server 3: firefox (TSSA-2023:0261)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Upgrade: Thunderbird 115.4

Timelineinfo

10/23/2023 🔍
10/24/2023 +1 days 🔍
10/24/2023 +0 days 🔍
10/24/2023 +0 days 🔍
11/24/2025 +762 days 🔍

Sourcesinfo

Vendor: mozilla.org

Advisory: Bug 1690979
Researcher: Armin Ebert
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2023-5732 (🔍)
GCVE (CVE): GCVE-0-2023-5732
GCVE (VulDB): GCVE-100-243234

Entryinfo

Created: 10/24/2023 21:20
Updated: 11/24/2025 09:54
Changes: 10/24/2023 21:20 (18), 10/24/2023 21:23 (28), 11/15/2023 13:01 (2), 11/15/2023 13:09 (11), 11/24/2025 09:54 (17)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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