CVE-2020-7451
Last modified
CVE-2020-7451 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. In FreeBSD 12.1-STABLE before r358739, 12.1-RELEASE before 12.1-RELEASE-p3, 11.3-STABLE before r358740, and 11.3-RELEASE before 11.3-RELEASE-p7, a TCP SYN-ACK or challenge TCP-ACK segment over IPv6 that is transmitted or retransmitted does not properly initialize the Traffic Class field disclosing one byte of kernel memory over the network.. EPSS estimates a 1.14% chance of exploitation in the next 30 days.
Description
In FreeBSD 12.1-STABLE before r358739, 12.1-RELEASE before 12.1-RELEASE-p3, 11.3-STABLE before r358740, and 11.3-RELEASE before 11.3-RELEASE-p7, a TCP SYN-ACK or challenge TCP-ACK segment over IPv6 that is transmitted or retransmitted does not properly initialize the Traffic Class field disclosing one byte of kernel memory over the network.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Freebsd | Freebsd | 11.3 |
| Freebsd | Freebsd | 12.1 |
References
- https://security.FreeBSD.org/advisories/FreeBSD-SA-20:04.tcp.ascPatch, Vendor Advisory
- https://security.FreeBSD.org/advisories/FreeBSD-SA-20:04.tcp.ascPatch, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
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