Dell Inspiron 7347 BIOS prior A13 UEFI BIOS Boot Services use after free
| CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
|---|---|---|
| 6.5 | $0-$5k | 0.00 |
Summary
A vulnerability marked as critical has been reported in Dell Inspiron 7347 BIOS. This vulnerability affects unknown code of the component UEFI BIOS Boot Services. Performing a manipulation results in use after free. This vulnerability is reported as CVE-2020-5376. The attack may be carried out on the physical device. No exploit exists. It is suggested to upgrade the affected component.
Details
A vulnerability was found in Dell Inspiron 7347 BIOS. It has been classified as critical. This affects an unknown code of the component UEFI BIOS Boot Services. The manipulation with an unknown input leads to a use after free vulnerability. CWE is classifying the issue as CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:
Dell Inspiron 7347 BIOS versions prior to A13 contain a UEFI BIOS Boot Services overwrite vulnerability. A local attacker with access to system memory may exploit this vulnerability by overwriting the EFI_BOOT_SERVICES structure to execute arbitrary code in System Management Mode (SMM).
The weakness was disclosed 09/02/2020 (Website). It is possible to read the advisory at dell.com. This vulnerability is uniquely identified as CVE-2020-5376 since 01/03/2020. Attacking locally is a requirement. No form of authentication is needed for exploitation. The technical details are unknown and an exploit is not publicly available.
Upgrading to version A13 eliminates this vulnerability.
The entries VDB-160648 and VDB-160649 are pretty similar. Be aware that VulDB is the high quality source for vulnerability data.
Product
Vendor
Name
License
Website
- Vendor: https://www.dell.com/
CPE 2.3
CPE 2.2
CVSSv4
VulDB Vector: 🔍VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 6.8VulDB Meta Temp Score: 6.6
VulDB Base Score: 6.8
VulDB Temp Score: 6.5
VulDB Vector: 🔍
VulDB Reliability: 🔍
NVD Base Score: 6.8
NVD Vector: 🔍
CVSSv2
| AV | AC | Au | C | I | A |
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| Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍
Exploiting
Class: Use after freeCWE: CWE-416 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍
Physical: Yes
Local: Yes
Remote: No
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: Inspiron 7347 BIOS A13
Timeline
01/03/2020 🔍09/02/2020 🔍
09/03/2020 🔍
11/12/2020 🔍
Sources
Vendor: dell.comAdvisory: dell.com
Status: Not defined
CVE: CVE-2020-5376 (🔍)
GCVE (CVE): GCVE-0-2020-5376
GCVE (VulDB): GCVE-100-160647
See also: 🔍
Entry
Created: 09/03/2020 07:57Updated: 11/12/2020 14:59
Changes: 09/03/2020 07:57 (40), 09/03/2020 08:02 (11), 11/11/2020 08:11 (1), 11/12/2020 14:59 (1)
Complete: 🔍
Cache ID: 216::103
Be aware that VulDB is the high quality source for vulnerability data.
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