Cisco IP Phone/Wireless IP Phone Broadcom MediaxChange Firmware Local Privilege Escalation

| CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
|---|---|---|
| 6.1 | $0-$5k | 0.00 |
Summary
A vulnerability marked as critical has been reported in Cisco IP Phone and Wireless IP Phone. This affects an unknown function of the component Broadcom MediaxChange Firmware. This manipulation causes an unknown weakness. This vulnerability is tracked as CVE-2021-33478. It is feasible to perform the attack on the physical device. No exploit exists. It is suggested to upgrade the affected component.
Details
A vulnerability classified as critical was found in Cisco IP Phone and Wireless IP Phone (IP Phone Software) (the affected version is unknown). Affected by this vulnerability is an unknown code of the component Broadcom MediaxChange Firmware. As an impact it is known to affect confidentiality, integrity, and availability.
The weakness was disclosed 07/22/2021 as cisco-sa-brcm-mxc-jul2021-26LqUZUh. It is possible to read the advisory at tools.cisco.com. This vulnerability is known as CVE-2021-33478. The technical details are unknown and an exploit is not publicly available.
Upgrading eliminates this vulnerability. A possible mitigation has been published before and not just after the disclosure of the vulnerability.
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Product
Type
Vendor
Name
License
Website
- Vendor: https://www.cisco.com/
CPE 2.3
CPE 2.2
CVSSv4
VulDB Vector: 🔍VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 6.4VulDB Meta Temp Score: 6.1
VulDB Base Score: 6.4
VulDB Temp Score: 6.1
VulDB Vector: 🔍
VulDB Reliability: 🔍
CVSSv2
| AV | AC | Au | C | I | A |
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| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
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| Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍
Exploiting
Class: Local Privilege EscalationCWE: Unknown
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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Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: UpgradeStatus: 🔍
0-Day Time: 🔍
Timeline
05/20/2021 🔍07/07/2021 🔍
07/22/2021 🔍
07/22/2021 🔍
07/27/2021 🔍
Sources
Vendor: cisco.comAdvisory: cisco-sa-brcm-mxc-jul2021-26LqUZUh
Status: Confirmed
CVE: CVE-2021-33478 (🔍)
GCVE (CVE): GCVE-0-2021-33478
GCVE (VulDB): GCVE-100-179407
Entry
Created: 07/22/2021 21:26Updated: 07/27/2021 08:32
Changes: 07/22/2021 21:26 (37), 07/27/2021 08:32 (2)
Complete: 🔍
Cache ID: 216::103
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