Debian Security Advisory DSA 4188-1 (linux - security update)

Published: 2018-04-30 22:00:00
CVE Author: NIST National Vulnerability Database

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

Solution Type:
Vendor Patch

Detection Type:
Linux Distribution Package

Affected Versions:
linux on Debian Linux

Recommendations:
For the stable distribution (stretch), these problems have been fixed in version 4.9.88-1. We recommend that you upgrade your linux Linux Distribution Packages. For the detailed security status of linux please refer to its security tracker page linked in the references.

Summary:
Several vulnerabilities have been discovered in the Linux kernel that may lead to a privilege escalation, denial of service or information leaks. CVE-2017-5715 Multiple researchers have discovered a vulnerability in various processors supporting speculative execution, enabling an attacker controlling an unprivileged process to read memory from arbitrary addresses, including from the kernel and all other processes running on the system. This specific attack has been named Spectre variant 2 (branch target injection) and is mitigated for the x86 architecture (amd64 and i386) by using the retpoline compiler feature which allows indirect branches to be isolated from speculative execution. CVE-2017-5753 Multiple researchers have discovered a vulnerability in various processors supporting speculative execution, enabling an attacker controlling an unprivileged process to read memory from arbitrary addresses, including from the kernel and all other processes running on the system. This specific attack has been named Spectre variant 1 (bounds-check bypass) and is mitigated by identifying vulnerable code sections (array bounds checking followed by array access) and replacing the array access with the speculation-safe array_index_nospec() function. Description truncated. Please see the references for more information.

Detection Method:
This check tests the installed software version using the apt Linux Distribution Package manager.

NIST (National Institute of Standards and Technology) NVD (National Vulnerability Database)

https://nvd.nist.gov/vuln/detail/CVE-2017-17975
https://nvd.nist.gov/vuln/detail/CVE-2017-18193
https://nvd.nist.gov/vuln/detail/CVE-2017-18216
https://nvd.nist.gov/vuln/detail/CVE-2017-18218
https://nvd.nist.gov/vuln/detail/CVE-2017-18222
https://nvd.nist.gov/vuln/detail/CVE-2017-18224
https://nvd.nist.gov/vuln/detail/CVE-2017-18241
https://nvd.nist.gov/vuln/detail/CVE-2017-18257
https://nvd.nist.gov/vuln/detail/CVE-2017-5715
https://nvd.nist.gov/vuln/detail/CVE-2017-5753
https://nvd.nist.gov/vuln/detail/CVE-2018-1000199
https://nvd.nist.gov/vuln/detail/CVE-2018-10323
https://nvd.nist.gov/vuln/detail/CVE-2018-1065
https://nvd.nist.gov/vuln/detail/CVE-2018-1066
https://nvd.nist.gov/vuln/detail/CVE-2018-1068
https://nvd.nist.gov/vuln/detail/CVE-2018-1092
https://nvd.nist.gov/vuln/detail/CVE-2018-1093
https://nvd.nist.gov/vuln/detail/CVE-2018-1108
https://nvd.nist.gov/vuln/detail/CVE-2018-5803
https://nvd.nist.gov/vuln/detail/CVE-2018-7480
https://nvd.nist.gov/vuln/detail/CVE-2018-7566
https://nvd.nist.gov/vuln/detail/CVE-2018-7740
https://nvd.nist.gov/vuln/detail/CVE-2018-7757
https://nvd.nist.gov/vuln/detail/CVE-2018-7995
https://nvd.nist.gov/vuln/detail/CVE-2018-8087
https://nvd.nist.gov/vuln/detail/CVE-2018-8781
https://nvd.nist.gov/vuln/detail/CVE-2018-8822

References:

https://www.debian.org/security/2018/dsa-4188.html
https://security-tracker.debian.org/tracker/linux

Severity
High
CVSS Score
7.2
Published
2018-04-30
Modified
2019-03-18
Category
Debian Local Security Checks

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