CVE-2021-3055
CVSS V2 High 7.5
CVSS V3 Medium 6.5
Description
An improper restriction of XML external entity (XXE) reference vulnerability in the Palo Alto Networks PAN-OS web interface enables an authenticated administrator to read any arbitrary file from the file system and send a specifically crafted request to the firewall that causes the service to crash. Repeated attempts to send this request result in denial of service to all PAN-OS services by restarting the device and putting it into maintenance mode. This issue impacts: PAN-OS 8.1 versions earlier than PAN-OS 8.1.20; PAN-OS 9.0 versions earlier than PAN-OS 9.0.14; PAN-OS 9.1 versions earlier than PAN-OS 9.1.10; PAN-OS 10.0 versions earlier than PAN-OS 10.0.6. This issue does not affect Prisma Access.
Overview
- CVE ID
- CVE-2021-3055
- Assigner
- psirt@paloaltonetworks.com
- Vulnerability Status
- Analyzed
- Published Version
- 2021-09-08T17:15:12
- Last Modified Date
- 2021-09-15T19:04:39
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| cpe:2.3:o:paloaltonetworks:pan-os:*:*:*:*:*:*:*:* | 1 | OR | 8.1.0 | 8.1.20 |
| cpe:2.3:o:paloaltonetworks:pan-os:*:*:*:*:*:*:*:* | 1 | OR | 9.0.0 | 9.0.14 |
| cpe:2.3:o:paloaltonetworks:pan-os:*:*:*:*:*:*:*:* | 1 | OR | 9.1.0 | 9.1.10 |
| cpe:2.3:o:paloaltonetworks:pan-os:*:*:*:*:*:*:*:* | 1 | OR | 10.0.0 | 10.0.6 |
CVSS Version 2
- Version
- 2.0
- Vector String
- AV:N/AC:L/Au:S/C:P/I:N/A:C
- Access Vector
- NETWORK
- Access Compatibility
- LOW
- Authentication
- SINGLE
- Confidentiality Impact
- PARTIAL
- Integrity Impact
- NONE
- Availability Impact
- COMPLETE
- Base Score
- 7.5
- Severity
- HIGH
- Exploitability Score
- 8
- Impact Score
- 7.8
CVSS Version 3
- Version
- 3.1
- Vector String
- CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:H
- Attack Vector
- NETWORK
- Attack Compatibility
- LOW
- Privileges Required
- HIGH
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality Impact
- HIGH
- Availability Impact
- HIGH
- Base Score
- 6.5
- Base Severity
- MEDIUM
- Exploitability Score
- 1.2
- Impact Score
- 5.2
References
| Reference URL | Reference Tags |
|---|---|
| https://security.paloaltonetworks.com/CVE-2021-3055 | Vendor Advisory |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2021-3055 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3055 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-05-10 16:05:10 | Added to TrackCVE | |||
| 2022-12-05 10:08:05 | 2021-09-08T17:15Z | 2021-09-08T17:15:12 | CVE Published Date | updated |
| 2022-12-05 10:08:05 | 2021-09-15T19:04:39 | CVE Modified Date | updated | |
| 2022-12-05 10:08:05 | Analyzed | Vulnerability Status | updated |