Mozilla Thunderbird up to 128.1 OTR Chat Session use after free

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.2$5k-$25k0.00

Summaryinfo

A vulnerability marked as critical has been reported in Mozilla Thunderbird up to 128.1. Affected by this vulnerability is an unknown functionality of the component OTR Chat Session Handler. The manipulation leads to use after free. This vulnerability is traded as CVE-2024-8394. It is possible to initiate the attack remotely. There is no exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in Mozilla Thunderbird up to 128.1. It has been rated as critical. This issue affects an unknown code of the component OTR Chat Session Handler. The manipulation with an unknown input leads to a use after free vulnerability. Using CWE to declare the problem leads to CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

When aborting the verification of an OTR chat session, an attacker could have caused a use-after-free bug leading to a potentially exploitable crash. This vulnerability affects Thunderbird < 128.2.

The advisory is shared at bugzilla.mozilla.org. The identification of this vulnerability is CVE-2024-8394 since 09/03/2024. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. It demands that the victim is doing some kind of user interaction. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 10/02/2024).

The vulnerability scanner Nessus provides a plugin with the ID 207923 (Rocky Linux 9 : thunderbird (RLSA-2024:6683)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 128.2 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (207923). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.2

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
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: Use after free
CWE: CWE-416 / CWE-119
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: 207923
Nessus Name: Rocky Linux 9 : thunderbird (RLSA-2024:6683)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Thunderbird 128.2

Timelineinfo

09/03/2024 🔍
09/06/2024 +3 days 🔍
09/06/2024 +0 days 🔍
03/11/2025 +186 days 🔍

Sourcesinfo

Vendor: mozilla.org

Advisory: bugzilla.mozilla.org
Status: Confirmed

CVE: CVE-2024-8394 (🔍)
GCVE (CVE): GCVE-0-2024-8394
GCVE (VulDB): GCVE-100-276749

Entryinfo

Created: 09/06/2024 20:09
Updated: 03/11/2025 01:28
Changes: 09/06/2024 20:09 (55), 09/09/2024 20:33 (1), 09/12/2024 07:16 (11), 10/02/2024 10:23 (2), 03/11/2025 01:28 (3)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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