Vulnerability in Linux Kernel
CVE-2017-7184
The xfrm_replay_verify_len function in net/xfrm/xfrm_user.c in the Linux kernel through 4.10.6 does not validate certain size data after an XFRM_MSG_NEWAE update, which allows local users to obtain root privileges or cause a denial of service (heap-based out-of-bounds access) by leveraging the CAP_NET_ADMIN capability, as demonstrated during a Pwn2Own competition at CanSecWest 2017 for the Ubuntu 16.10 linux-image-* package 4.8.0.41.52.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.018 (78.3th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 78th percentile — 78.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.018 · newest: 0.018 · change: 0.000
Affected products
- Linux Kernel — versions 4.8
- Canonical Ubuntu Linux — versions 16.10
Public proof-of-concept exploits
References
- blog.trendmicro.com/results-pwn2own-2017-day-one/ (Technical Description, Third Party Advisory)
- access.redhat.com/errata/RHSA-2017:2918 (vendor-advisory, Third Party Advisory)
- git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/ (Vendor Advisory)
- access.redhat.com/errata/RHSA-2017:2931 (vendor-advisory, Third Party Advisory)
- www.securityfocus.com/bid/97018 (VDB Entry, Third Party Advisory, vdb-entry)
- source.android.com/security/bulletin/2017-05-01 (Third Party Advisory)
- www.securitytracker.com/id/1038166 (VDB Entry, Third Party Advisory, vdb-entry)
- github.com/torvalds/linux/commit/f843ee6dd019bcece3e74e76ad9df0155655d0df (Third Party Advisory)
- git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/ (Vendor Advisory)
- www.eweek.com/security/ubuntu-linux-falls-on-day-1-of-pwn2own-hacking-competiti… (Technical Description, Third Party Advisory)
Frequently asked questions
- What is CVE-2017-7184?
- CVE-2017-7184 is a high-severity vulnerability in Linux Kernel. CVSS score: 7.8/10. Published 2017-03-19.
- How severe is CVE-2017-7184?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2017-7184 known to be exploited?
- 33 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.