CVE-2021-20177
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- CVE-2021-20177
CVE Details
| Release Date: | 2021-05-26 | |
| Impact: | None | What is this? |
Description
A flaw was found in the Linux kernel's implementation of string matching within a packet. A privileged user (with root or CAP_NET_ADMIN) when inserting iptables rules could insert a rule which can panic the system. Kernel before kernel 5.5-rc1 is affected.
See more information about CVE-2021-20177 from MITRE CVE dictionary and NIST NVD
NOTE: The following CVSS metrics and score provided are preliminary and subject to review.
CVSS v3 metrics
| Base Score: | 4.4 |
| Vector String: | CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H |
| Version: | 3.0 |
| Attack Vector: | Local |
| Attack Complexity: | Low |
| Privileges Required: | High |
| User Interaction: | None |
| Scope: | Unchanged |
| Confidentiality Impact: | None |
| Integrity Impact: | None |
| Availability Impact: | High |
Errata information
| Platform | Errata | Release Date |
| Oracle Linux version 7 (kernel-uek) | ELSA-2021-9037 | 2021-02-08 |
| Oracle Linux version 7 (kernel-uek-container) | ELSA-2021-9038 | 2021-02-08 |
| Oracle Linux version 8 (kernel-uek) | ELSA-2021-9037 | 2021-02-08 |
| Oracle Linux version 8 (kernel-uek-container) | ELSA-2021-9038 | 2021-02-08 |
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