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LIN7-9328 : Security Advisory - linux - CVE-2017-17805

Created: Dec 29, 2017    Updated: Sep 8, 2018
Resolved Date: Jan 17, 2018
Found In Version: 7.0.0.27
Fix Version: 7.0.0.28
Severity: Standard
Applicable for: Wind River Linux 7
Component/s: Kernel

Description

The Salsa20 encryption algorithm in the Linux kernel before 4.14.8 does not correctly handle zero-length inputs, allowing a local attacker able to use the AF_ALG-based skcipher interface (CONFIG_CRYPTO_USER_API_SKCIPHER) to cause a denial of service (uninitialized-memory free and kernel crash) or have unspecified other impact by executing a crafted sequence of system calls that use the blkcipher_walk API. Both the generic implementation (crypto/salsa20_generic.c) and x86 implementation (arch/x86/crypto/salsa20_glue.c) of Salsa20 were vulnerable.

https://nvd.nist.gov/vuln/detail/CVE-2017-17805

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