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CVE-2019-18282
Published: Jan 16, 2020
Modified: Aug 5, 2024
PUBLISHED
Description
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.
| Vendor | Product | Versions |
|---|---|---|
n/a | n/a | affected n/a |
References
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.3.10
x_refsource_MISC
https://security.netapp.com/advisory/ntap-20200204-0002/
x_refsource_CONFIRM
[debian-lts-announce] 20200302 [SECURITY] [DLA 2114-1] linux-4.9 security update
mailing-list
x_refsource_MLIST
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