CVE-2017-17805

HIGH

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

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

http://lists.opensuse.org/opensuse-security-announce/2018-01/msg00007.html

http://lists.opensuse.org/opensuse-security-announce/2018-01/msg00008.html

http://lists.opensuse.org/opensuse-security-announce/2018-01/msg00014.html

http://lists.opensuse.org/opensuse-security-announce/2018-01/msg00016.html

http://www.securityfocus.com/bid/102291

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

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

https://www.debian.org/security/2018/dsa-4082

https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.8

Details

Source: MITRE

Published: 2017-12-20

Updated: 2018-10-31

Type: CWE-20

Risk Information

CVSS v2.0

Base Score: 7.2

Vector: AV:L/AC:L/Au:N/C:C/I:C/A:C

Impact Score: 10

Exploitability Score: 3.9

Severity: HIGH

CVSS v3.0

Base Score: 7.8

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Impact Score: 5.9

Exploitability Score: 1.8

Severity: HIGH

Tenable Plugins

View all (42 total)

IDNameProductFamilySeverity
134312NewStart CGSL MAIN 4.05 : kernel Multiple Vulnerabilities (NS-SA-2020-0021)NessusNewStart CGSL Local Security Checks
high
128689NewStart CGSL MAIN 4.06 : kernel Multiple Vulnerabilities (NS-SA-2019-0177)NessusNewStart CGSL Local Security Checks
high
128032Virtuozzo 6 : parallels-server-bm-release / vzkernel / etc (VZA-2019-067)NessusVirtuozzo Local Security Checks
high
127982Oracle Linux 6 : kernel (ELSA-2019-2473)NessusOracle Linux Local Security Checks
high
127919CentOS 6 : kernel (CESA-2019:2473)NessusCentOS Local Security Checks
high
127880Scientific Linux Security Update : kernel on SL6.x i386/x86_64 (20190813)NessusScientific Linux Local Security Checks
high
127878RHEL 6 : kernel (RHSA-2019:2473)NessusRed Hat Local Security Checks
high
127281NewStart CGSL CORE 5.04 / MAIN 5.04 : kernel-rt Multiple Vulnerabilities (NS-SA-2019-0074)NessusNewStart CGSL Local Security Checks
critical
127272NewStart CGSL CORE 5.04 / MAIN 5.04 : kernel Multiple Vulnerabilities (NS-SA-2019-0070)NessusNewStart CGSL Local Security Checks
critical
124974EulerOS Virtualization for ARM 64 3.0.1.0 : kernel (EulerOS-SA-2019-1521)NessusHuawei Local Security Checks
critical
124824EulerOS Virtualization 3.0.1.0 : kernel (EulerOS-SA-2019-1501)NessusHuawei Local Security Checks
high
119567Oracle Linux 6 : Unbreakable Enterprise kernel (ELSA-2018-4301)NessusOracle Linux Local Security Checks
high
119566OracleVM 3.4 : Unbreakable / etc (OVMSA-2018-0286)NessusOracleVM Local Security Checks
high
119535Oracle Linux 6 / 7 : Unbreakable Enterprise kernel (ELSA-2018-4300)NessusOracle Linux Local Security Checks
high
119534Oracle Linux 6 / 7 : Unbreakable Enterprise kernel (ELSA-2018-4299)NessusOracle Linux Local Security Checks
high
119187Scientific Linux Security Update : kernel on SL7.x x86_64 (20181030)NessusScientific Linux Local Security Checks
high
118990CentOS 7 : kernel (CESA-2018:3083)NessusCentOS Local Security Checks
high
118770Oracle Linux 7 : kernel (ELSA-2018-3083)NessusOracle Linux Local Security Checks
high
118528RHEL 7 : kernel-rt (RHSA-2018:3096)NessusRed Hat Local Security Checks
high
118525RHEL 7 : kernel (RHSA-2018:3083)NessusRed Hat Local Security Checks
high
118513RHEL 7 : kernel-alt (RHSA-2018:2948) (Spectre)NessusRed Hat Local Security Checks
high
117541EulerOS Virtualization 2.5.0 : kernel (EulerOS-SA-2018-1232)NessusHuawei Local Security Checks
high
109316Ubuntu 16.04 LTS : Linux kernel (Azure) vulnerabilities (USN-3632-1)NessusUbuntu Local Security Checks
high
108878Ubuntu 14.04 LTS : linux-lts-xenial, linux-aws vulnerabilities (USN-3619-2)NessusUbuntu Local Security Checks
high
108843Ubuntu 14.04 LTS : linux vulnerabilities (USN-3620-1)NessusUbuntu Local Security Checks
critical
108842Ubuntu 16.04 LTS : linux, linux-aws, linux-kvm, linux-raspi2, linux-snapdragon vulnerabilities (USN-3619-1)NessusUbuntu Local Security Checks
high
108840Ubuntu 17.10 : linux-raspi2 vulnerabilities (USN-3617-3)NessusUbuntu Local Security Checks
high
108835Ubuntu 16.04 LTS : linux-hwe, linux-gcp, linux-oem vulnerabilities (USN-3617-2)NessusUbuntu Local Security Checks
high
108834Ubuntu 17.10 : linux vulnerabilities (USN-3617-1)NessusUbuntu Local Security Checks
high
106967SUSE SLES12 Security Update : kernel (SUSE-SU-2018:0525-1) (Spectre)NessusSuSE Local Security Checks
high
106815SUSE SLES12 Security Update : kernel (SUSE-SU-2018:0437-1) (Spectre)NessusSuSE Local Security Checks
high
106406EulerOS 2.0 SP1 : kernel (EulerOS-SA-2018-1031)NessusHuawei Local Security Checks
critical
106167EulerOS 2.0 SP2 : kernel (EulerOS-SA-2018-1026)NessusHuawei Local Security Checks
high
105704Debian DSA-4082-1 : linux - security update (Meltdown)NessusDebian Local Security Checks
high
105685SUSE SLES11 Security Update : kernel (SUSE-SU-2018:0040-1) (BlueBorne) (KRACK) (Meltdown) (Spectre)NessusSuSE Local Security Checks
high
105636openSUSE Security Update : the Linux Kernel (openSUSE-2018-3) (Meltdown) (Spectre)NessusSuSE Local Security Checks
high
105622Debian DLA-1232-1 : linux security update (Meltdown)NessusDebian Local Security Checks
high
105597openSUSE Security Update : the Linux Kernel (openSUSE-2018-2) (Meltdown) (Spectre)NessusSuSE Local Security Checks
high
105576SUSE SLED12 / SLES12 Security Update : kernel (SUSE-SU-2018:0012-1) (Meltdown) (Spectre)NessusSuSE Local Security Checks
high
105575SUSE SLES11 Security Update : kernel (SUSE-SU-2018:0011-1) (Meltdown) (Spectre)NessusSuSE Local Security Checks
high
105574SUSE SLED12 / SLES12 Security Update : kernel (SUSE-SU-2018:0010-1) (Meltdown) (Spectre)NessusSuSE Local Security Checks
high
105433Debian DSA-4073-1 : linux - security updateNessusDebian Local Security Checks
high