CVE-2019-18282
unknown
CVSS v3
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CVSS v2
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VIR risk
—
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.
Predictions
Exploit likelihood
20%
Patch ETA
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Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2019-18282
Vendor advisory: suse — https://www.suse.com/security/cve/CVE-2019-18282.html
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| sles | affected | | |
| debian | bookworm | fixed | 5.3.15-1 |
| debian | bullseye | fixed | 5.3.15-1 |
| debian | forky | fixed | 5.3.15-1 |
| debian | sid | fixed | 5.3.15-1 |
| debian | trixie | fixed | 5.3.15-1 |
References
Verify integrity in audit chain (admin only). AS-IS.