摘要:
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.
安全等级: Low
公告ID: KylinSec-SA-2022-2298
发布日期: 2022年9月29日
关联CVE: 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. 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.
| cve名称 | 产品 | 组件 | 是否受影响 |
|---|---|---|---|
| CVE-2019-18282 | KY3.4-4A | kernel | Unaffected |
| CVE-2019-18282 | KY3.4-5 | kernel | Unaffected |
| CVE-2019-18282 | KY3.5.1 | kernel | Unaffected |
