The flow_dissector feature in the Linux kernel 4.3 through 5.x before 5.3.10 has a device tracking vulnerability, aka CID-55667441c84f. This occurs because the auto flowlabel of a UDP IPv6 packet relies on a 32-bit hashrnd value as a secret, and because jhash (instead of siphash) is used. The hashrnd value remains the same starting from boot time, and can be inferred by an attacker. This affects net/core/flow_dissector.c and related code.
References
Link | Resource |
---|---|
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.3.10 | Mailing List Vendor Advisory |
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=55667441c84fa5e0911a0aac44fb059c15ba6da2 | Mailing List Patch Vendor Advisory |
https://lists.debian.org/debian-lts-announce/2020/03/msg00001.html | Mailing List Third Party Advisory |
https://security.netapp.com/advisory/ntap-20200204-0002/ | Third Party Advisory |
https://www.computer.org/csdl/proceedings-article/sp/2020/349700b594/1j2LgrHDR2o | Third Party Advisory |
History
No history.
MITRE Information
Status: PUBLISHED
Assigner: mitre
Published: 2020-01-16T15:22:58
Updated: 2020-04-27T13:19:07
Reserved: 2019-10-23T00:00:00
Link: CVE-2019-18282
JSON object: View
NVD Information
Status : Analyzed
Published: 2020-01-16T16:15:16.950
Modified: 2022-04-18T15:48:24.223
Link: CVE-2019-18282
JSON object: View
Redhat Information
No data.
CWE