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CVE-2021-0267
CVE information
Published
Last Modified
CVSSv2.0 Severity
CVSSv3.1 Severity
Impact Analysis
Description
An Improper Input Validation vulnerability in the active-lease query portion in JDHCPD's DHCP Relay Agent of Juniper Networks Junos OS allows an attacker to cause a Denial of Service (DoS) by sending a crafted DHCP packet to the device thereby crashing the jdhcpd DHCP service. This is typically configured for Broadband Subscriber Sessions. Continued receipt and processing of this crafted packet will create a sustained Denial of Service (DoS) condition. This issue affects Juniper Networks Junos OS: 19.4 versions prior to 19.4R3-S1; 20.1 versions prior to 20.1R2-S1, 20.1R3; 20.2 versions prior to 20.2R3; 20.3 versions prior to 20.3R2. This issue does not affect Junos OS Evolved..
CVSSv2.0 Score
- Severity
- Low
- Base Score
- 3.3/10
- Exploit Score
- 6.5/10
- Access Vector
- Adjacent_network
- Access Complexity
- Low
- Authentication Required
- None
- Impact Score
- 2.9/10
- Confidentiality Impact
- None
- Availability Impact
- Partial
- Integrity Impact
- None
CVSSv3.1 Score
- Severity
- Medium
- Base Score
- 6.5/10
- Exploit Score
- 2.8/10
- Access Vector
- Adjacent_network
- Access Complexity
- Low
- Privileges Required
- None
- Impact Score
- 3.6/10
- Confidentiality Impact
- None
- Availability Impact
- High
- Integrity Impact
- None
- Scope
- Unchanged
- User Interaction
- None
Products Affected
| CPE | Affected | Vulnerable | Excluding | Edit |
|---|---|---|---|---|
| cpe:2.3:o:juniper:junos:19.4:r1:*:*:*:*:*:* |
Yes
|
- | - | |
| cpe:2.3:o:juniper:junos:20.1:r1:*:*:*:*:*:* |
Yes
|
- | - | |
| cpe:2.3:o:juniper:junos:19.4:r1-s1:*:*:*:*:*:* |
Yes
|
- | - | |
| cpe:2.3:o:juniper:junos:19.4:r1-s2:*:*:*:*:*:* |
Yes
|
- | - | |
| cpe:2.3:o:juniper:junos:20.1:r1-s1:*:*:*:*:*:* |
Yes
|
- | - | |
| cpe:2.3:o:juniper:junos:20.2:r1:*:*:*:*:*:* |
Yes
|
- | - | |
| cpe:2.3:o:juniper:junos:20.1:r1-s2:*:*:*:*:*:* |
Yes
|
- | - | |
| cpe:2.3:o:juniper:junos:20.1:r1-s3:*:*:*:*:*:* |
Yes
|
- | - | |
| cpe:2.3:o:juniper:junos:19.4:r2:*:*:*:*:*:* |
Yes
|
- | - | |
| cpe:2.3:o:juniper:junos:19.4:r2-s1:*:*:*:*:*:* |
Yes
|
- | - | |
| cpe:2.3:o:juniper:junos:20.2:r1-s1:*:*:*:*:*:* |
Yes
|
- | - | |
| cpe:2.3:o:juniper:junos:20.2:r1-s2:*:*:*:*:*:* |
Yes
|
- | - | |
| cpe:2.3:o:juniper:junos:19.4:r2-s2:*:*:*:*:*:* |
Yes
|
- | - | |
| cpe:2.3:o:juniper:junos:19.4:r3:*:*:*:*:*:* |
Yes
|
- | - | |
| cpe:2.3:o:juniper:junos:20.3:r1:*:*:*:*:*:* |
Yes
|
- | - | |
| cpe:2.3:o:juniper:junos:20.1:r1-s4:*:*:*:*:*:* |
Yes
|
- | - | |
| cpe:2.3:o:juniper:junos:20.3:r1-s1:*:*:*:*:*:* |
Yes
|
- | - | |
| cpe:2.3:o:juniper:junos:20.2:r1-s3:*:*:*:*:*:* |
Yes
|
- | - | |
| cpe:2.3:o:juniper:junos:20.2:r2:*:*:*:*:*:* |
Yes
|
- | - | |
| cpe:2.3:o:juniper:junos:20.2:r2-s1:*:*:*:*:*:* |
Yes
|
- | - | |
| cpe:2.3:o:juniper:junos:20.2:r2-s2:*:*:*:*:*:* |
Yes
|
- | - | |
| cpe:2.3:o:juniper:junos:20.1:r2:*:*:*:*:*:* |
Yes
|
- | - | |
| cpe:2.3:o:juniper:junos:20.2:r2-s3:*:*:*:*:*:* |
Yes
|
- | - |