Mozilla Thunderbird up to 115.3.1 WebExtension information disclosure

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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4.2$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic was found in Mozilla Thunderbird up to 115.3.1. This issue affects some unknown processing of the component WebExtension Handler. Such manipulation leads to information disclosure. This vulnerability is documented as CVE-2023-5725. The attack can be executed remotely. There is not any exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Mozilla Thunderbird up to 115.3.1 (Mail Client Software). Affected by this issue is an unknown function of the component WebExtension Handler. The manipulation with an unknown input leads to a information disclosure vulnerability. Using CWE to declare the problem leads to CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. Impacted is confidentiality.

The weakness was released 10/24/2023 by Shaheen Fazim as Bug 1845739 as confirmed advisory (Website). The advisory is shared for download at bugzilla.mozilla.org. The advisory contains:

A malicious installed WebExtension could open arbitrary URLs, which under the right circumstance could be leveraged to collect sensitive user data.
This vulnerability is handled as CVE-2023-5725. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1592.

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). Once again VulDB remains the best 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: 4.3
VulDB Meta Temp Score: 4.2

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

NVD Base Score: 4.3
NVD Vector: 🔍

CVSSv2info

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

Exploitinginfo

Class: Information disclosure
CWE: CWE-200 / CWE-284 / CWE-266
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 1845739
Researcher: Shaheen Fazim
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2023-5725 (🔍)
GCVE (CVE): GCVE-0-2023-5725
GCVE (VulDB): GCVE-100-243236

Entryinfo

Created: 10/24/2023 21:20
Updated: 11/24/2025 09:37
Changes: 10/24/2023 21:20 (2), 10/24/2023 21:21 (15), 10/24/2023 21:24 (29), 11/15/2023 13:26 (2), 11/15/2023 13:32 (10), 11/24/2025 09:37 (17)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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