Vulnerability Details : CVE-2017-17450
net/netfilter/xt_osf.c in the Linux kernel through 4.14.4 does not require the CAP_NET_ADMIN capability for add_callback and remove_callback operations, which allows local users to bypass intended access restrictions because the xt_osf_fingers data structure is shared across all net namespaces.
Products affected by CVE-2017-17450
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2017-17450
0.04%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 8 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2017-17450
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
4.6
|
MEDIUM | AV:L/AC:L/Au:N/C:P/I:P/A:P |
3.9
|
6.4
|
NIST | |
|
7.8
|
HIGH | CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
1.8
|
5.9
|
NIST |
CWE ids for CVE-2017-17450
-
The product does not perform an authorization check when an actor attempts to access a resource or perform an action.Assigned by: nvd@nist.gov (Primary)
References for CVE-2017-17450
-
https://www.debian.org/security/2018/dsa-4082
Debian -- Security Information -- DSA-4082-1 linux
-
https://usn.ubuntu.com/3617-2/
USN-3617-2: Linux (HWE) vulnerabilities | Ubuntu security notices
-
https://usn.ubuntu.com/3583-1/
USN-3583-1: Linux kernel vulnerabilities | Ubuntu security notices
-
http://lists.opensuse.org/opensuse-security-announce/2018-01/msg00007.html
[security-announce] SUSE-SU-2018:0011-1: important: Security update for
-
https://usn.ubuntu.com/3632-1/
USN-3632-1: Linux kernel (Azure) vulnerabilities | Ubuntu security notices
-
https://usn.ubuntu.com/3617-1/
USN-3617-1: Linux kernel vulnerabilities | Ubuntu security notices
-
https://lkml.org/lkml/2017/12/5/982
LKML: Kevin Cernekee: [PATCH] netfilter: xt_osf: Add missing permission checksThird Party Advisory
-
https://usn.ubuntu.com/3619-1/
USN-3619-1: Linux kernel vulnerabilities | Ubuntu security notices
-
https://usn.ubuntu.com/3619-2/
USN-3619-2: Linux kernel (Xenial HWE) vulnerabilities | Ubuntu security notices
-
https://usn.ubuntu.com/3617-3/
USN-3617-3: Linux kernel (Raspberry Pi 2) vulnerabilities | Ubuntu security notices
-
http://www.securityfocus.com/bid/102110
Linux Kernel '/netfilter/xt_osf.c' Local Security Bypass VulnerabilityThird Party Advisory;VDB Entry
-
https://usn.ubuntu.com/3583-2/
USN-3583-2: Linux kernel (Trusty HWE) vulnerabilities | Ubuntu security notices
-
https://www.debian.org/security/2017/dsa-4073
Debian -- Security Information -- DSA-4073-1 linux
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