Mozilla Thunderbird up to 102.7 EncodeInputStream out-of-bounds

| CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
|---|---|---|
| 7.2 | $0-$5k | 0.00 |
Summary
A vulnerability was found in Mozilla Thunderbird up to 102.7. It has been rated as problematic. Affected by this vulnerability is an unknown functionality of the component EncodeInputStream. The manipulation leads to out-of-bounds. This vulnerability is referenced as CVE-2023-25732. Remote exploitation of the attack is possible. No exploit is available. Upgrading the affected component is advised.
Details
A vulnerability was found in Mozilla Thunderbird up to 102.7 (Mail Client Software). It has been rated as problematic. This issue affects an unknown function of the component EncodeInputStream. The manipulation with an unknown input leads to a out-of-bounds vulnerability. Using CWE to declare the problem leads to CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. Impacted is confidentiality. The summary by CVE is:
When encoding data from an inputStream in xpcom the size of the input being encoded was not correctly calculated potentially leading to an out of bounds memory write. This vulnerability affects Firefox < 110, Thunderbird < 102.8, and Firefox ESR < 102.8.
The weakness was published 06/03/2023. It is possible to read the advisory at mozilla.org. The identification of this vulnerability is CVE-2023-25732 since 02/13/2023. 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 102.8 eliminates this vulnerability. The upgrade is hosted for download at mozilla.org.
The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2023-29639). Be aware that VulDB is the high quality source for vulnerability data.
Product
Type
Vendor
Name
Version
License
Website
- Vendor: https://www.mozilla.org/
CPE 2.3
CPE 2.2
CVSSv4
VulDB Vector: 🔍VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 7.3VulDB Meta Temp Score: 7.2
VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔍
VulDB Reliability: 🔍
NVD Base Score: 8.8
NVD Vector: 🔍
CNA Base Score: 8.8
CNA Vector: 🔍
CVSSv2
| AV | AC | Au | C | I | A |
|---|---|---|---|---|---|
| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
|---|---|---|---|---|---|
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍
Exploiting
Class: Out-of-boundsCWE: CWE-125 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍
Physical: No
Local: No
Remote: Yes
Availability: 🔍
Status: Not defined
EPSS Score: 🔍
EPSS Percentile: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍
| 0-Day | Unlock | Unlock | Unlock | Unlock |
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| Today | Unlock | Unlock | Unlock | Unlock |
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: UpgradeStatus: 🔍
0-Day Time: 🔍
Upgrade: Thunderbird 102.8
Timeline
02/13/2023 🔍06/03/2023 🔍
06/03/2023 🔍
11/01/2025 🔍
Sources
Vendor: mozilla.orgAdvisory: mozilla.org
Status: Confirmed
CVE: CVE-2023-25732 (🔍)
GCVE (CVE): GCVE-0-2023-25732
GCVE (VulDB): GCVE-100-230615
EUVD: 🔍
Entry
Created: 06/03/2023 07:42Updated: 11/01/2025 21:53
Changes: 06/03/2023 07:42 (42), 06/29/2023 18:10 (11), 01/09/2025 22:44 (26), 04/26/2025 00:41 (3), 11/01/2025 21:53 (1)
Complete: 🔍
Cache ID: 216::103
Be aware that VulDB is the high quality source for vulnerability data.
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