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CVE-2021-45485

Date: December 24, 2021

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.

Language: C

Severity Score

Related Resources (10)

https://arxiv.org/pdf/2112.09604.pdf
https://access.redhat.com/security/cve/CVE-2021-45485
https://nvd.nist.gov/vuln/detail/CVE-2021-45485
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13.3
https://people.canonical.com/~ubuntu-security/cve/CVE-2021-45485
https://www.oracle.com/security-alerts/cpujul2022.html
https://security-tracker.debian.org/tracker/CVE-2021-45485
https://security.netapp.com/advisory/ntap-20220121-0001/
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=62f20e068ccc50d6ab66fdb72ba90da2b9418c99
https://www.mend.io/vulnerability-database/CVE-2021-45485

Severity Score

Weakness Type (CWE)

Use of a Broken or Risky Cryptographic Algorithm

CWE-327

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): NONE
Availability (A): NONE

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): LOW
Authentication (AU): NONE
Confidentiality (C): PARTIAL
Integrity (I): NONE
Availability (A): NONE
Additional information:

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