Auth bypass in Linux Kernel
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.
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.004 (33.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 34th percentile — 33.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.securityfocus.com/bid/102110 (VDB Entry, Third Party Advisory, vdb-entry)
- usn.ubuntu.com/3617-1/ (vendor-advisory)
- usn.ubuntu.com/3619-2/ (vendor-advisory)
- www.debian.org/security/2018/dsa-4082 (vendor-advisory)
- usn.ubuntu.com/3617-3/ (vendor-advisory)
- lkml.org/lkml/2017/12/5/982 (Third Party Advisory)
- usn.ubuntu.com/3583-2/ (vendor-advisory)
- lists.opensuse.org/opensuse-security-announce/2018-01/msg00007.html (vendor-advisory)
- usn.ubuntu.com/3632-1/ (vendor-advisory)
- usn.ubuntu.com/3583-1/ (vendor-advisory)
Frequently asked questions
- What is CVE-2017-17450?
- CVE-2017-17450 is a high-severity vulnerability in Linux Kernel, classified under Missing Authorization. CVSS score: 7.8/10. Published 2017-12-07.
- How severe is CVE-2017-17450?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2017-17450 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.