A flaw in the processing of received ICMP errors (ICMP fragment needed and ICMP redirect) in the Linux kernel functionality was found to allow the ability to quickly scan open UDP ports. This flaw allows an off-path remote user to effectively bypass the source port UDP randomization. The highest threat from this vulnerability is to confidentiality and possibly integrity, because software that relies on UDP source port randomization are indirectly affected as well.
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Affected Vendors & Products
References
History
No history.
MITRE
Status: PUBLISHED
Assigner: redhat
Published: 2022-02-18T17:50:45
Updated: 2024-08-03T17:37:23.666Z
Reserved: 2020-12-17T00:00:00
Link: CVE-2021-20322
Vulnrichment
No data.
NVD
Status : Modified
Published: 2022-02-18T18:15:09.013
Modified: 2024-11-21T05:46:22.573
Link: CVE-2021-20322
Redhat