Information disclosure in Linux Kernel
CVE-2017-17449
The __netlink_deliver_tap_skb function in net/netlink/af_netlink.c in the Linux kernel through 4.14.4, when CONFIG_NLMON is enabled, does not restrict observations of Netlink messages to a single net namespace, which allows local users to obtain sensitive information by leveraging the CAP_NET_ADMIN capability to sniff an nlmon interface for all Netlink activity on the system.
Vulnerability class: Information Disclosure
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.7 (Medium). Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.004 (35.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 36th percentile — 35.8% 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
- usn.ubuntu.com/3619-2/ (vendor-advisory)
- www.debian.org/security/2018/dsa-4082 (vendor-advisory)
- lkml.org/lkml/2017/12/5/950 (Mailing List, Third Party Advisory)
- www.securityfocus.com/bid/102122 (VDB Entry, Third Party Advisory, vdb-entry)
- access.redhat.com/errata/RHSA-2018:1062 (vendor-advisory)
- source.android.com/security/bulletin/pixel/2018-04-01
- access.redhat.com/errata/RHSA-2018:0654 (vendor-advisory)
- access.redhat.com/errata/RHSA-2018:0676 (vendor-advisory)
- usn.ubuntu.com/3653-2/ (vendor-advisory)
- usn.ubuntu.com/3655-1/ (vendor-advisory)
Frequently asked questions
- What is CVE-2017-17449?
- CVE-2017-17449 is a medium-severity vulnerability in Linux Kernel, classified under Information Disclosure. CVSS score: 4.7/10. Published 2017-12-07.
- How severe is CVE-2017-17449?
- Medium severity. CVSS v3 base score is 4.7 out of 10.
- Is CVE-2017-17449 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.