CVE-2017-17805 Detail

Current 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.


View Analysis Description

Severity



CVSS 3.x Severity and Metrics:

NIST CVSS score
NIST: NVD
Base Score:  7.8 HIGH
Vector:  CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H


NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.

Note: NVD Analysts have published a CVSS score for this CVE based on publicly available information at the time of analysis. The CNA has not provided a score within the CVE List.

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ecaaab5649781c5a0effdaf298a925063020500e Patch 
http://lists.opensuse.org/opensuse-security-announce/2018-01/msg00006.html Third Party Advisory 
http://lists.opensuse.org/opensuse-security-announce/2018-01/msg00007.html Third Party Advisory 
http://lists.opensuse.org/opensuse-security-announce/2018-01/msg00008.html Third Party Advisory 
http://lists.opensuse.org/opensuse-security-announce/2018-01/msg00014.html Third Party Advisory 
http://lists.opensuse.org/opensuse-security-announce/2018-01/msg00016.html Third Party Advisory 
http://www.securityfocus.com/bid/102291 Third Party Advisory  VDB Entry 
https://access.redhat.com/errata/RHSA-2018:2948
https://access.redhat.com/errata/RHSA-2018:3083
https://access.redhat.com/errata/RHSA-2018:3096
https://access.redhat.com/errata/RHSA-2019:2473
https://github.com/torvalds/linux/commit/ecaaab5649781c5a0effdaf298a925063020500e Patch 
https://lists.debian.org/debian-lts-announce/2018/01/msg00004.html
https://usn.ubuntu.com/3617-1/
https://usn.ubuntu.com/3617-2/
https://usn.ubuntu.com/3617-3/
https://usn.ubuntu.com/3619-1/
https://usn.ubuntu.com/3619-2/
https://usn.ubuntu.com/3620-1/
https://usn.ubuntu.com/3620-2/
https://usn.ubuntu.com/3632-1/
https://www.debian.org/security/2017/dsa-4073 Third Party Advisory 
https://www.debian.org/security/2018/dsa-4082
https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.8 Issue Tracking  Release Notes 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-20 Improper Input Validation cwe source acceptance level NIST  

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Change History

13 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2017-17805
NVD Published Date:
12/20/2017
NVD Last Modified:
10/31/2018
Source:
MITRE