CVE-2017-5551MEDIUM
New! CVE Severity Now Using CVSS v3
The calculated severity for CVEs has been updated to use CVSS v3 by default. CVEs that do not have a CVSS v3 score will fall back CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.
Description
The simple_set_acl function in fs/posix_acl.c in the Linux kernel before 4.9.6 preserves the setgid bit during a setxattr call involving a tmpfs filesystem, which allows local users to gain group privileges by leveraging the existence of a setgid program with restrictions on execute permissions. NOTE: this vulnerability exists because of an incomplete fix for CVE-2016-7097.
References
http://www.debian.org/security/2017/dsa-3791
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.6
http://www.openwall.com/lists/oss-security/2017/01/21/3
http://www.securityfocus.com/bid/95717
http://www.securitytracker.com/id/1038053
https://bugzilla.redhat.com/show_bug.cgi?id=1416126
https://github.com/torvalds/linux/commit/497de07d89c1410d76a15bec2bb41f24a2a89f31
Details
Source: MITRE
Published: 2017-02-06
Updated: 2019-10-03
Type: NVD-CWE-noinfo
Risk Information
CVSS v2
Base Score: 3.6
Vector: AV:L/AC:L/Au:N/C:P/I:P/A:N
Impact Score: 4.9
Exploitability Score: 3.9
Severity: LOW
CVSS v3
Base Score: 4.4
Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
Impact Score: 2.5
Exploitability Score: 1.8
Severity: MEDIUM
Vulnerable Software
Configuration 1
OR
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions up to 4.9.5 (inclusive)
Tenable Plugins
| ID | Name | Product | Family | Severity |
|---|---|---|---|---|
| 124978 | EulerOS Virtualization for ARM 64 3.0.1.0 : kernel (EulerOS-SA-2019-1525) | Nessus | Huawei Local Security Checks | high |
| 124825 | EulerOS Virtualization 3.0.1.0 : kernel (EulerOS-SA-2019-1502) | Nessus | Huawei Local Security Checks | high |
| 103046 | RHEL 6 : MRG (RHSA-2017:2669) | Nessus | Red Hat Local Security Checks | high |
| 102734 | CentOS 7 : kernel (CESA-2017:1842) (Stack Clash) | Nessus | CentOS Local Security Checks | high |
| 102281 | Oracle Linux 7 : kernel (ELSA-2017-1842) (Stack Clash) | Nessus | Oracle Linux Local Security Checks | high |
| 102151 | RHEL 7 : kernel-rt (RHSA-2017:2077) | Nessus | Red Hat Local Security Checks | high |
| 102143 | RHEL 7 : kernel (RHSA-2017:1842) (Stack Clash) | Nessus | Red Hat Local Security Checks | high |
| 101929 | Ubuntu 16.04 LTS : linux-hwe vulnerabilities (USN-3361-1) | Nessus | Ubuntu Local Security Checks | critical |
| 101894 | Ubuntu 16.10 : linux, linux-raspi2 vulnerabilities (USN-3359-1) | Nessus | Ubuntu Local Security Checks | critical |
| 99074 | Oracle Linux 6 : kernel (ELSA-2017-0817) | Nessus | Oracle Linux Local Security Checks | high |
| 97886 | RHEL 6 : kernel (RHSA-2017:0817) | Nessus | Red Hat Local Security Checks | high |
| 97779 | Ubuntu 14.04 LTS : linux-lts-xenial vulnerabilities (USN-3234-2) | Nessus | Ubuntu Local Security Checks | medium |
| 97778 | Ubuntu 16.04 LTS : linux, linux-aws, linux-gke, linux-raspi2, linux-snapdragon vulnerabilities (USN-3234-1) | Nessus | Ubuntu Local Security Checks | medium |
| 97557 | Amazon Linux AMI : kernel (ALAS-2017-805) | Nessus | Amazon Linux Local Security Checks | critical |
| 97466 | SUSE SLED12 / SLES12 Security Update : kernel (SUSE-SU-2017:0575-1) | Nessus | SuSE Local Security Checks | critical |
| 97357 | Debian DSA-3791-1 : linux - security update | Nessus | Debian Local Security Checks | critical |
| 97297 | SUSE SLES11 Security Update : kernel (SUSE-SU-2017:0494-1) | Nessus | SuSE Local Security Checks | critical |
| 97274 | openSUSE Security Update : the Linux Kernel (openSUSE-2017-245) | Nessus | SuSE Local Security Checks | critical |
| 97205 | SUSE SLES12 Security Update : kernel (SUSE-SU-2017:0471-1) | Nessus | SuSE Local Security Checks | high |
| 97189 | SUSE SLED12 / SLES12 Security Update : kernel (SUSE-SU-2017:0464-1) | Nessus | SuSE Local Security Checks | high |
| 97138 | openSUSE Security Update : the Linux Kernel (openSUSE-2017-246) | Nessus | SuSE Local Security Checks | critical |
| 97097 | SUSE SLES11 Security Update : kernel (SUSE-SU-2017:0437-1) | Nessus | SuSE Local Security Checks | critical |
| 96903 | SUSE SLES11 Security Update : kernel (SUSE-SU-2017:0333-1) | Nessus | SuSE Local Security Checks | critical |
| 96894 | Fedora 25 : kernel (2017-81fbd592d4) | Nessus | Fedora Local Security Checks | high |
| 96890 | Fedora 24 : kernel (2017-6cc158c193) | Nessus | Fedora Local Security Checks | high |