CVE-2017-17805

HIGH

Linux Kernel < 3.2.97 - Improper Input Validation

Title source: rule
STIX 2.1

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.

References (24)

Core 24
Core References
Third Party Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2018:3083
Third Party Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/3617-1/
Third Party Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/3619-2/
Third Party Advisory vendor-advisory x_refsource_debian
https://www.debian.org/security/2018/dsa-4082
Third Party Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/3617-3/
Third Party Advisory mailing-list x_refsource_mlist
https://lists.debian.org/debian-lts-announce/2018/01/msg00004.html
Third Party Advisory vendor-advisory x_refsource_suse
http://lists.opensuse.org/opensuse-security-announce/2018-01/msg00008.html
Third Party Advisory vendor-advisory x_refsource_suse
http://lists.opensuse.org/opensuse-security-announce/2018-01/msg00007.html
Third Party Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/3632-1/
Third Party Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/3620-2/
Third Party Advisory vendor-advisory x_refsource_suse
http://lists.opensuse.org/opensuse-security-announce/2018-01/msg00014.html
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/102291
Third Party Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2018:2948
Issue Tracking, Release Notes x_refsource_confirm
https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.8
Third Party Advisory vendor-advisory x_refsource_suse
http://lists.opensuse.org/opensuse-security-announce/2018-01/msg00006.html
Third Party Advisory vendor-advisory x_refsource_debian
https://www.debian.org/security/2017/dsa-4073
Third Party Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/3617-2/
Third Party Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/3620-1/
Third Party Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2018:3096
Third Party Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/3619-1/
Third Party Advisory vendor-advisory x_refsource_suse
http://lists.opensuse.org/opensuse-security-announce/2018-01/msg00016.html
Third Party Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2019:2473

Scores

CVSS v3 7.8
EPSS 0.0002
EPSS Percentile 6.0%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Details

CWE
CWE-20
Status published
Products (13)
canonical/ubuntu_linux 12.04
canonical/ubuntu_linux 14.04
canonical/ubuntu_linux 16.04
canonical/ubuntu_linux 17.10
debian/debian_linux 8.0
debian/debian_linux 9.0
linux/linux_kernel 2.6.25 - 3.2.97
opensuse/leap 42.2
opensuse_project/leap 42.3
suse/linux_enterprise_desktop 12 sp2 (2 CPE variants)
... and 3 more
Published Dec 20, 2017
Tracked Since Feb 18, 2026