Mozilla Thunderbird up to 102.7 PKCS 12 memory corruption

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.4$5k-$25k0.00

Summaryinfo

A vulnerability labeled as critical has been found in Mozilla Thunderbird up to 102.7. Affected by this vulnerability is an unknown functionality of the component PKCS 12 Handler. The manipulation results in memory corruption. This vulnerability is cataloged as CVE-2023-0767. The attack may be launched remotely. There is no exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in Mozilla Thunderbird up to 102.7 (Mail Client Software). It has been classified as critical. Affected is an unknown part of the component PKCS 12 Handler. The manipulation with an unknown input leads to a memory corruption vulnerability. CWE is classifying the issue as CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

An attacker could construct a PKCS 12 cert bundle in such a way that could allow for arbitrary memory writes via PKCS 12 Safe Bag attributes being mishandled. This vulnerability affects Firefox < 110, Thunderbird < 102.8, and Firefox ESR < 102.8.

The weakness was shared 06/03/2023. The advisory is shared for download at mozilla.org. This vulnerability is traded as CVE-2023-0767 since 02/09/2023. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $5k-$25k (estimation calculated on 06/18/2025).

The vulnerability scanner Nessus provides a plugin with the ID 239916 (TencentOS Server 2: nss (TSSA-2023:0035)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 102.8 eliminates this vulnerability. The upgrade is hosted for download at mozilla.org.

The vulnerability is also documented in the vulnerability database at Tenable (239916). Once again VulDB remains the best source for vulnerability data.

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: 7.6
VulDB Meta Temp Score: 7.4

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

NVD Base Score: 8.8
NVD Vector: 🔍

CVSSv2info

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

Exploitinginfo

Class: Memory corruption
CWE: 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: 239916
Nessus Name: TencentOS Server 2: nss (TSSA-2023:0035)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Thunderbird 102.8

Timelineinfo

02/09/2023 🔍
06/03/2023 +113 days 🔍
06/03/2023 +0 days 🔍
06/18/2025 +746 days 🔍

Sourcesinfo

Vendor: mozilla.org

Advisory: mozilla.org
Status: Confirmed

CVE: CVE-2023-0767 (🔍)
GCVE (CVE): GCVE-0-2023-0767
GCVE (VulDB): GCVE-100-230604

Entryinfo

Created: 06/03/2023 07:35
Updated: 06/18/2025 10:55
Changes: 06/03/2023 07:35 (42), 06/29/2023 17:03 (11), 06/18/2025 10:55 (17)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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