vulnerability
CentOS Linux: CVE-2017-17806: Important: kernel-alt security, bug fix, and enhancement update (CESA-2018:2948)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 7 | (AV:L/AC:L/Au:N/C:C/I:C/A:C) | Dec 20, 2017 | Aug 28, 2019 | May 25, 2023 |
Severity
7
CVSS
(AV:L/AC:L/Au:N/C:C/I:C/A:C)
Published
Dec 20, 2017
Added
Aug 28, 2019
Modified
May 25, 2023
Description
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.
Solution
centos-upgrade-kernel
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