Vulnerability in Linux Kernel
CVE-2017-2671
The ping_unhash function in net/ipv4/ping.c in the Linux kernel through 4.10.8 is too late in obtaining a certain lock and consequently cannot ensure that disconnect function calls are safe, which allows local users to cause a denial of service (panic) by leveraging access to the protocol value of IPPROTO_ICMP in a socket system call.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.015 (73.4th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 73rd percentile — 73.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.015 · newest: 0.015 · change: 0.000
Affected products
Public proof-of-concept exploits
References
- www.securityfocus.com/bid/97407 (VDB Entry, Third Party Advisory, vdb-entry)
- github.com/torvalds/linux/commit/43a6684519ab0a6c52024b5e25322476cabad893 (Patch, Third Party Advisory, Issue Tracking)
- openwall.com/lists/oss-security/2017/04/04/8 (mailing-list, Mailing List, Third Party Advisory)
- access.redhat.com/errata/RHSA-2017:2669 (vendor-advisory)
- access.redhat.com/errata/RHSA-2018:1854 (vendor-advisory)
- usn.ubuntu.com/3754-1/ (vendor-advisory)
- twitter.com/danieljiang0415/status/845116665184497664 (Third Party Advisory)
- github.com/danieljiang0415/android_kernel_crash_poc (Third Party Advisory)
- www.exploit-db.com/exploits/42135/ (exploit)
- access.redhat.com/errata/RHSA-2017:2077 (vendor-advisory)
Frequently asked questions
- What is CVE-2017-2671?
- CVE-2017-2671 is a medium-severity vulnerability in Linux Kernel. CVSS score: 5.5/10. Published 2017-04-05.
- How severe is CVE-2017-2671?
- Medium severity. CVSS v3 base score is 5.5 out of 10.
- Is CVE-2017-2671 known to be exploited?
- 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.