CVSS2
Attack Vector
ADJACENT_NETWORK
Attack Complexity
LOW
Authentication
SINGLE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:A/AC:L/Au:S/C:P/I:N/A:N
CVSS3
Attack Vector
ADJACENT
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
EPSS
Percentile
17.9%
In the IPv4 implementation in the Linux kernel before 5.12.4,
net/ipv4/route.c has an information leak because the hash table is very
small.
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
ubuntu | 18.04 | noarch | linux | <Â 4.15.0-156.163 | UNKNOWN |
ubuntu | 20.04 | noarch | linux | <Â 5.4.0-77.86 | UNKNOWN |
ubuntu | 16.04 | noarch | linux | <Â 4.4.0-223.256 | UNKNOWN |
ubuntu | 18.04 | noarch | linux-aws | <Â 4.15.0-1111.118 | UNKNOWN |
ubuntu | 20.04 | noarch | linux-aws | <Â 5.4.0-1051.53 | UNKNOWN |
ubuntu | 14.04 | noarch | linux-aws | <Â 4.4.0-1103.108 | UNKNOWN |
ubuntu | 16.04 | noarch | linux-aws | <Â 4.4.0-1139.153 | UNKNOWN |
ubuntu | 18.04 | noarch | linux-aws-5.4 | <Â 5.4.0-1051.53~18.04.1 | UNKNOWN |
ubuntu | 16.04 | noarch | linux-aws-hwe | <Â 4.15.0-1111.118~16.04.1 | UNKNOWN |
ubuntu | 20.04 | noarch | linux-azure | <Â 5.4.0-1051.53 | UNKNOWN |
arxiv.org/pdf/2112.09604.pdf
cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.4
git.kernel.org/linus/aa6dd211e4b1dde9d5dc25d699d35f789ae7eeba (5.13-rc1)
git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/net/ipv4/route.c?id=aa6dd211e4b1dde9d5dc25d699d35f789ae7eeba
launchpad.net/bugs/cve/CVE-2021-45486
nvd.nist.gov/vuln/detail/CVE-2021-45486
security-tracker.debian.org/tracker/CVE-2021-45486
ubuntu.com/security/notices/USN-5361-1
www.cve.org/CVERecord?id=CVE-2021-45486
CVSS2
Attack Vector
ADJACENT_NETWORK
Attack Complexity
LOW
Authentication
SINGLE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:A/AC:L/Au:S/C:P/I:N/A:N
CVSS3
Attack Vector
ADJACENT
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
EPSS
Percentile
17.9%