CVE-2021-45485

high

Description

In the IPv6 implementation in the Linux kernel before 5.13.3, net/ipv6/output_core.c has an information leak because of certain use of a hash table which, although big, doesn't properly consider that IPv6-based attackers can typically choose among many IPv6 source addresses.

References

https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13.3

https://arxiv.org/pdf/2112.09604.pdf

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=62f20e068ccc50d6ab66fdb72ba90da2b9418c99

https://security.netapp.com/advisory/ntap-20220121-0001/

https://www.oracle.com/security-alerts/cpujul2022.html

Details

Source: MITRE

Published: 2021-12-25

Updated: 2022-07-25

Type: CWE-327

Risk Information

CVSS v2

Base Score: 5

Vector: AV:N/AC:L/Au:N/C:P/I:N/A:N

Impact Score: 2.9

Exploitability Score: 10

Severity: MEDIUM

CVSS v3

Base Score: 7.5

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Impact Score: 3.6

Exploitability Score: 3.9

Severity: HIGH