Ubuntu.comUB:CVE-2020-24490CVE-2020-24490
CVSS2
Attack Vector
ADJACENT_NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:A/AC:L/Au:N/C:N/I:N/A:P
CVSS3
Attack Vector
ADJACENT
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS
Percentile
26.7%
Improper buffer restrictions in BlueZ may allow an unauthenticated user to
potentially enable denial of service via adjacent access. This affects all
Linux kernel versions that support BlueZ.
Notes
| Author | Note |
|---|---|
| sbeattie | This issue affected kernels 4.18 and later; as such Ubuntu 20.04’s 5.4 kernel was fixed around 2020/09/21, before the advisory was issued. it is asserted that b2cc9761f144e8ef714be8c590603073b80ddc13 made the vulnerability accessible. |
| sbeattie | it’s not clear if https://lore.kernel.org/linux-bluetooth/[email protected]/ is needed as well. |
| OS | Version | Architecture | Package | Version | Filename |
|---|---|---|---|---|---|
| ubuntu | 20.04 | noarch | linux | < 5.4.0-48.52 | UNKNOWN |
| ubuntu | 18.04 | noarch | linux-hwe-5.4 | < 5.4.0-48.52~18.04.1 | UNKNOWN |
| ubuntu | 20.04 | noarch | linux-oem-5.6 | < 5.6.0-1048.52 | UNKNOWN |
| ubuntu | 18.04 | noarch | linux-oem-osp1 | < 5.0.0-1070.76 | UNKNOWN |
| ubuntu | 20.04 | noarch | linux-raspi | < 5.4.0-1019.21 | UNKNOWN |
| ubuntu | 18.04 | noarch | linux-raspi-5.4 | < 5.4.0-1019.21~18.04.1 | UNKNOWN |
| ubuntu | 18.04 | noarch | linux-raspi2-5.3 | < 5.3.0-1036.38 | UNKNOWN |
| ubuntu | 20.04 | noarch | linux-riscv | < 5.4.0-34.38 | UNKNOWN |
References
git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth-next.git/commit/?id=a2ec905d1e160a33b2e210e45ad30445ef26ce0e
github.com/google/security-research/security/advisories/GHSA-ccx2-w2r4-x649
launchpad.net/bugs/cve/CVE-2020-24490
nvd.nist.gov/vuln/detail/CVE-2020-24490
security-tracker.debian.org/tracker/CVE-2020-24490
ubuntu.com/security/notices/USN-4592-1
ubuntu.com/security/notices/USN-4752-1
www.cve.org/CVERecord?id=CVE-2020-24490
www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00435.html
Related
CVSS2
Attack Vector
ADJACENT_NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:A/AC:L/Au:N/C:N/I:N/A:P
CVSS3
Attack Vector
ADJACENT
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS
Percentile
26.7%