CVE-2019-18282
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.
Does this matter?
Lower severity and a low EPSS score (2.60%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.1
- 5.3 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
- EPSS
- 2.60% probability · 85th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-330
- Affected
- linux/linux kernel · debian/debian linux · netapp/a700s firmware · netapp/8300 firmware · netapp/8700 firmware · netapp/a400 firmware · netapp/h610s firmware · netapp/active iq unified manager · netapp/cloud backup · netapp/data availability services · netapp/e-series santricity os controller · netapp/hci management node · netapp/solidfire · netapp/steelstore cloud integrated storage
- Source
- cve@mitre.org
References
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.3.10Mailing List, Vendor Advisory
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=55667441c84fa5e0911a0aac44fb059c15ba6da2Mailing List, Patch, Vendor Advisory
- https://lists.debian.org/debian-lts-announce/2020/03/msg00001.htmlMailing List, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20200204-0002/Third Party Advisory
- https://www.computer.org/csdl/proceedings-article/sp/2020/349700b594/1j2LgrHDR2oThird Party Advisory
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.3.10Mailing List, Vendor Advisory
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=55667441c84fa5e0911a0aac44fb059c15ba6da2Mailing List, Patch, Vendor Advisory
- https://lists.debian.org/debian-lts-announce/2020/03/msg00001.htmlMailing List, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20200204-0002/Third Party Advisory
- https://www.computer.org/csdl/proceedings-article/sp/2020/349700b594/1j2LgrHDR2oThird Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.