Mozilla Thunderbird memory corruption

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.9$5k-$25k0.00

Summaryinfo

A vulnerability was found in Mozilla Thunderbird. It has been rated as critical. This affects an unknown part. Performing a manipulation results in memory corruption. This vulnerability is cataloged as CVE-2023-5176. It is possible to initiate the attack remotely. There is no exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability, which was classified as critical, was found in Mozilla Thunderbird (Mail Client Software) (version unknown). This affects an unknown function. 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. The summary by CVE is:

Memory safety bugs present in Firefox 117, Firefox ESR 115.2, and Thunderbird 115.2. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 118, Firefox ESR < 115.3, and Thunderbird < 115.3.

The weakness was shared 09/27/2023. The advisory is shared at mozilla.org. This vulnerability is uniquely identified as CVE-2023-5176 since 09/25/2023. 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 06/21/2025).

The vulnerability scanner Nessus provides a plugin with the ID 239741 (TencentOS Server 3: firefox (TSSA-2023:0238)), which helps to determine the existence of the flaw in a target environment.

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

The vulnerability is also documented in the vulnerability database at Tenable (239741). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

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Vendor

Name

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.0
VulDB Meta Temp Score: 7.9

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

NVD Base Score: 9.8
NVD Vector: 🔍

CVSSv2info

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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: 239741
Nessus Name: TencentOS Server 3: firefox (TSSA-2023:0238)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: mozilla.org

Timelineinfo

09/25/2023 🔍
09/27/2023 +2 days 🔍
09/27/2023 +0 days 🔍
06/21/2025 +633 days 🔍

Sourcesinfo

Vendor: mozilla.org

Advisory: DLA 3587-1
Status: Confirmed

CVE: CVE-2023-5176 (🔍)
GCVE (CVE): GCVE-0-2023-5176
GCVE (VulDB): GCVE-100-240429

Entryinfo

Created: 09/27/2023 18:09
Updated: 06/21/2025 11:26
Changes: 09/27/2023 18:09 (39), 10/19/2023 08:19 (1), 10/19/2023 08:20 (11), 06/21/2025 11:26 (17)
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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