Out-of-bounds Write Affecting kernel-uek package, versions <0:2.6.39-400.304.1.el5uek


Severity

Recommended
0.0
high
0
10

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
0.04% (12th percentile)

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  • Snyk IDSNYK-ORACLE5-KERNELUEK-2531117
  • published10 Apr 2022
  • disclosed20 Dec 2017

Introduced: 20 Dec 2017

CVE-2017-17806  (opens in a new tab)
CWE-787  (opens in a new tab)

How to fix?

Upgrade Oracle:5 kernel-uek to version 0:2.6.39-400.304.1.el5uek or higher.
This issue was patched in ELSA-2018-4301.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-uek package and not the kernel-uek package as distributed by Oracle. See How to fix? for Oracle:5 relevant fixed versions and status.

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.

CVSS Scores

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