Vulnerability 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 Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 4.3, <= 5.3.10 |
| Debian | Debian Linux | 8.0 |
| Netapp | A700S Firmware | - |
| Netapp | A700S | - |
| Netapp | 8300 Firmware | - |
| Netapp | 8300 | - |
| Netapp | 8700 Firmware | - |
| Netapp | 8700 | - |
| Netapp | A400 Firmware | - |
| Netapp | A400 | - |
| Netapp | H610S Firmware | - |
| Netapp | H610S | - |
| Netapp | Active Iq Unified Manager | - |
| Netapp | Cloud Backup | - |
| Netapp | Data Availability Services | - |
| Netapp | E-Series Santricity Os Controller | >= 11.0.0, <= 11.70.1 |
| Netapp | Hci Management Node | - |
| Netapp | Solidfire | - |
| Netapp | Steelstore Cloud Integrated Storage | - |
Related Weaknesses (CWE)
References
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.3.10Mailing ListVendor Advisory
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=5566Mailing ListPatchVendor Advisory
- https://lists.debian.org/debian-lts-announce/2020/03/msg00001.htmlMailing ListThird 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 ListVendor Advisory
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=5566Mailing ListPatchVendor Advisory
- https://lists.debian.org/debian-lts-announce/2020/03/msg00001.htmlMailing ListThird 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
FAQ
What is CVE-2019-18282?
CVE-2019-18282 is a vulnerability with a CVSS score of 5.3 (MEDIUM). 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 reli...
How severe is CVE-2019-18282?
CVE-2019-18282 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2019-18282?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel, Debian Debian Linux, Netapp A700S Firmware, Netapp A700S, Netapp 8300 Firmware.