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ubuntucveUbuntu.comUB:CVE-2017-17806
HistoryDec 20, 2017 - 12:00 a.m.

CVE-2017-17806

2017-12-2000:00:00
ubuntu.com
ubuntu.com
20

7.2 High

CVSS2

Attack Vector

LOCAL

Attack 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

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

0.0004 Low

EPSS

Percentile

10.1%

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.

OSVersionArchitecturePackageVersionFilename
ubuntu17.10noarchlinux< 4.13.0-38.43UNKNOWN
ubuntu14.04noarchlinux< 3.13.0-142.191UNKNOWN
ubuntu16.04noarchlinux< 4.4.0-119.143UNKNOWN
ubuntu14.04noarchlinux-aws< 4.4.0-1016.16UNKNOWN
ubuntu16.04noarchlinux-aws< 4.4.0-1054.63UNKNOWN
ubuntu16.04noarchlinux-azure< 4.13.0-1014.17UNKNOWN
ubuntu16.04noarchlinux-gcp< 4.13.0-1012.16UNKNOWN
ubuntu16.04noarchlinux-hwe< 4.13.0-38.43~16.04.1UNKNOWN
ubuntu18.04noarchlinux-hwe-edge< 4.18.0-8.9~18.04.1UNKNOWN
ubuntu16.04noarchlinux-hwe-edge< 4.13.0-38.43~16.04.1UNKNOWN
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7.2 High

CVSS2

Attack Vector

LOCAL

Attack 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

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

0.0004 Low

EPSS

Percentile

10.1%