7.8 High
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.2 High
CVSS2
Access Vector
LOCAL
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:L/Au:N/C:C/I:C/A:C
0.0004 Low
EPSS
Percentile
9.3%
The HMAC implementation (crypto/hmac.c) in the Linux kernel before 4.14.8
does not validate that the underlying cryptographic hash algorithm is
unkeyed, allowing a local attacker able to use the AF_ALG-based hash
interface (CONFIG_CRYPTO_USER_API_HASH) and the SHA-3 hash algorithm
(CONFIG_CRYPTO_SHA3) to cause a kernel stack buffer overflow by executing a
crafted sequence of system calls that encounter a missing SHA-3
initialization.
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
ubuntu | 17.10 | noarch | linux | < 4.13.0-38.43 | UNKNOWN |
ubuntu | 14.04 | noarch | linux | < 3.13.0-142.191 | UNKNOWN |
ubuntu | 16.04 | noarch | linux | < 4.4.0-119.143 | UNKNOWN |
ubuntu | 14.04 | noarch | linux-aws | < 4.4.0-1016.16 | UNKNOWN |
ubuntu | 16.04 | noarch | linux-aws | < 4.4.0-1054.63 | UNKNOWN |
ubuntu | 16.04 | noarch | linux-azure | < 4.13.0-1014.17 | UNKNOWN |
ubuntu | 16.04 | noarch | linux-gcp | < 4.13.0-1012.16 | UNKNOWN |
ubuntu | 16.04 | noarch | linux-hwe | < 4.13.0-38.43~16.04.1 | UNKNOWN |
ubuntu | 18.04 | noarch | linux-hwe-edge | < 4.18.0-8.9~18.04.1 | UNKNOWN |
ubuntu | 16.04 | noarch | linux-hwe-edge | < 4.13.0-38.43~16.04.1 | UNKNOWN |
git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=af3ff8045bbf3e32f1a448542e73abb4c8ceb6f1
github.com/torvalds/linux/commit/af3ff8045bbf3e32f1a448542e73abb4c8ceb6f1
launchpad.net/bugs/cve/CVE-2017-17806
nvd.nist.gov/vuln/detail/CVE-2017-17806
security-tracker.debian.org/tracker/CVE-2017-17806
ubuntu.com/security/notices/USN-3583-1
ubuntu.com/security/notices/USN-3583-2
ubuntu.com/security/notices/USN-3617-1
ubuntu.com/security/notices/USN-3617-2
ubuntu.com/security/notices/USN-3617-3
ubuntu.com/security/notices/USN-3619-1
ubuntu.com/security/notices/USN-3619-2
ubuntu.com/security/notices/USN-3632-1
www.cve.org/CVERecord?id=CVE-2017-17806
www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.8
7.8 High
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.2 High
CVSS2
Access Vector
LOCAL
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:L/Au:N/C:C/I:C/A:C
0.0004 Low
EPSS
Percentile
9.3%