Mozilla Firefox/Firefox ESR/Thunderbird memory corruption

| CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
|---|---|---|
| 7.4 | $5k-$25k | 0.00 |
Summary
A vulnerability was found in Mozilla Firefox, Firefox ESR and Thunderbird and classified as critical. Affected is an unknown function. The manipulation results in memory corruption. This vulnerability is known as CVE-2021-38500. It is possible to launch the attack remotely. No exploit is available. It is suggested to upgrade the affected component.
Details
A vulnerability was found in Mozilla Firefox, Firefox ESR and Thunderbird (Web Browser) (the affected version is unknown). It has been classified as critical. Affected is an unknown code. 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 weakness was published 11/03/2021. The advisory is available at mozilla.org. This vulnerability is traded as CVE-2021-38500 since 08/10/2021. Successful exploitation requires user interaction by the victim. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $5k-$25k at the moment (estimation calculated on 11/06/2021).
Upgrading eliminates this vulnerability. The upgrade is hosted for download at mozilla.org.
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Product
Type
Vendor
Name
License
Website
- Vendor: https://www.mozilla.org/
- Product: https://www.mozilla.org/en-US/firefox/
CPE 2.3
CPE 2.2
CVSSv4
VulDB Vector: 🔍VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 7.6VulDB 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: 🔍
CVSSv2
| AV | AC | Au | C | I | A |
|---|---|---|---|---|---|
| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
|---|---|---|---|---|---|
| Unlock | Unlock | Unlock | Unlock | Unlock | Unlock |
| Unlock | Unlock | Unlock | Unlock | Unlock | Unlock |
| Unlock | Unlock | Unlock | Unlock | Unlock | Unlock |
VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍
NVD Base Score: 🔍
Exploiting
Class: Memory corruptionCWE: 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 |
|---|---|---|---|---|
| Today | Unlock | Unlock | Unlock | Unlock |
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: UpgradeStatus: 🔍
0-Day Time: 🔍
Upgrade: mozilla.org
Timeline
08/10/2021 🔍11/03/2021 🔍
11/03/2021 🔍
11/06/2021 🔍
Sources
Vendor: mozilla.orgProduct: mozilla.org
Advisory: mozilla.org
Status: Confirmed
CVE: CVE-2021-38500 (🔍)
GCVE (CVE): GCVE-0-2021-38500
GCVE (VulDB): GCVE-100-185910
Entry
Created: 11/03/2021 07:04Updated: 11/06/2021 08:48
Changes: 11/03/2021 07:04 (39), 11/06/2021 08:45 (1), 11/06/2021 08:48 (18)
Complete: 🔍
Cache ID: 216::103
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