National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

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.

Source:  MITRE      Last Modified:  12/20/2017      View Analysis Description

Quick Info

CVE Dictionary Entry:
CVE-2017-17805
Original release date:
12/20/2017
Last revised:
02/03/2018
Source:
US-CERT/NIST

Impact

CVSS Severity (version 3.0):
CVSS v3 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 (legend)
Impact Score:
5.9
Exploitability Score:
1.8
CVSS Version 3 Metrics:
Attack Vector (AV):
Local
Attack Complexity (AC):
Low
Privileges Required (PR):
Low
User Interaction (UI):
None
Scope (S):
Unchanged
Confidentiality (C):
High
Integrity (I):
High
Availability (A):
High
CVSS Severity (version 2.0):
CVSS v2 Base Score:
7.2 HIGH
Vector:
(AV:L/AC:L/Au:N/C:C/I:C/A:C) (legend)
Impact Subscore:
10.0
Exploitability Subscore:
3.9
CVSS Version 2 Metrics:
Access Vector:
Locally exploitable
Access Complexity:
Low
Authentication:
Not required to exploit
Impact Type:
Allows unauthorized disclosure of information; Allows unauthorized modification; Allows disruption of service

References to Advisories, Solutions, and Tools

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Hyperlink Resource Type Source Name
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ecaaab5649781c5a0effdaf298a925063020500e Patch External Source CONFIRM http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ecaaab5649781c5a0effdaf298a925063020500e
http://lists.opensuse.org/opensuse-security-announce/2018-01/msg00006.html Third Party Advisory External Source SUSE SUSE-SU-2018:0010
http://lists.opensuse.org/opensuse-security-announce/2018-01/msg00007.html Third Party Advisory External Source SUSE SUSE-SU-2018:0011
http://lists.opensuse.org/opensuse-security-announce/2018-01/msg00008.html Third Party Advisory External Source SUSE SUSE-SU-2018:0012
http://lists.opensuse.org/opensuse-security-announce/2018-01/msg00014.html Third Party Advisory External Source SUSE openSUSE-SU-2018:0022
http://lists.opensuse.org/opensuse-security-announce/2018-01/msg00016.html Third Party Advisory External Source SUSE openSUSE-SU-2018:0023
http://www.securityfocus.com/bid/102291 Third Party Advisory; VDB Entry External Source BID 102291
https://github.com/torvalds/linux/commit/ecaaab5649781c5a0effdaf298a925063020500e Patch External Source CONFIRM https://github.com/torvalds/linux/commit/ecaaab5649781c5a0effdaf298a925063020500e
https://lists.debian.org/debian-lts-announce/2018/01/msg00004.html External Source MLIST [debian-lts-announce] 20180107 [SECURITY] [DLA 1232-1] linux security update
https://www.debian.org/security/2017/dsa-4073 Third Party Advisory External Source DEBIAN DSA-4073
https://www.debian.org/security/2018/dsa-4082 External Source DEBIAN DSA-4082
https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.8 Issue Tracking; Release Notes External Source CONFIRM https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.8

Technical Details

Vulnerability Type (View All)

Change History 6 change records found - show changes