| Vulnerability Name: | CVE-2021-0299 (CCN-211260) | ||||||||||||
| Assigned: | 2020-10-27 | ||||||||||||
| Published: | 2021-10-13 | ||||||||||||
| Updated: | 2021-10-26 | ||||||||||||
| Summary: | An Improper Handling of Exceptional Conditions vulnerability in the processing of a transit or directly received malformed IPv6 packet in Juniper Networks Junos OS results in a kernel crash, causing the device to restart, leading to a Denial of Service (DoS). Continued receipt and processing of this packet will create a sustained Denial of Service (DoS) condition. This issue only affects systems with IPv6 configured. Devices with only IPv4 configured are not vulnerable to this issue. This issue affects Juniper Networks Junos OS: 19.4 versions prior to 19.4R3; 20.1 versions prior to 20.1R2; 20.2 versions prior to 20.2R1-S1, 20.2R2. This issue does not affect Juniper Networks Junos OS versions prior to 19.4R1. | ||||||||||||
| CVSS v3 Severity: | 7.5 High (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H) 6.5 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C)
6.5 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C)
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| CVSS v2 Severity: | 7.1 High (CVSS v2 Vector: AV:N/AC:M/Au:N/C:N/I:N/A:C)
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| Vulnerability Type: | CWE-755 | ||||||||||||
| Vulnerability Consequences: | Denial of Service | ||||||||||||
| References: | Source: MITRE Type: CNA CVE-2021-0299 Source: XF Type: UNKNOWN juniper-cve20210299-dos(211260) Source: CCN Type: Juniper Networks Security Bulletin JSA11213 Junos OS: Kernel crash (vmcore) upon receipt of a malformed IPv6 packet (CVE-2021-0299) Source: CONFIRM Type: Vendor Advisory https://kb.juniper.net/JSA11213 | ||||||||||||
| Vulnerable Configuration: | Configuration 1: Configuration CCN 1:  Denotes that component is vulnerable | ||||||||||||
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