Mozilla Thunderbird up to 68.4 SMIME Message null pointer dereference

CVSS Meta Temp Score
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CTI Interest Score
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5.3$0-$5k0.00

Summaryinfo

A vulnerability was found in Mozilla Thunderbird up to 68.4. It has been classified as problematic. Impacted is an unknown function of the component SMIME Handler. Performing a manipulation as part of Message results in null pointer dereference. This vulnerability is identified as CVE-2020-6795. The attack can be initiated remotely. There is not any exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability, which was classified as problematic, was found in Mozilla Thunderbird up to 68.4 (Mail Client Software). This affects an unknown code block of the component SMIME Handler. The manipulation as part of a Message leads to a null pointer dereference vulnerability. CWE is classifying the issue as CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. This is going to have an impact on availability. The summary by CVE is:

When processing a message that contains multiple S/MIME signatures, a bug in the MIME processing code caused a null pointer dereference, leading to an unexploitable crash. This vulnerability affects Thunderbird < 68.5.

The weakness was released 03/02/2020. This vulnerability is uniquely identified as CVE-2020-6795 since 01/10/2020. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available.

Upgrading to version 68.5 eliminates this vulnerability.

Entries connected to this vulnerability are available at VDB-150770, VDB-150769 and VDB-150768. Statistical analysis made it clear that VulDB provides the best quality 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: 5.4
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

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Null pointer dereference
CWE: CWE-476 / CWE-404
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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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Thunderbird 68.5

Timelineinfo

01/10/2020 🔍
03/02/2020 +52 days 🔍
03/02/2020 +0 days 🔍
05/12/2025 +1897 days 🔍

Sourcesinfo

Vendor: mozilla.org

Advisory: USN-4328-1
Status: Confirmed

CVE: CVE-2020-6795 (🔍)
GCVE (CVE): GCVE-0-2020-6795
GCVE (VulDB): GCVE-100-150771
See also: 🔍

Entryinfo

Created: 03/02/2020 12:48
Updated: 05/12/2025 09:08
Changes: 03/02/2020 12:48 (39), 03/02/2020 12:53 (18), 04/07/2024 17:22 (19), 04/07/2024 17:29 (1), 05/12/2025 09:08 (5)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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