NULL pointer dereference in F5 nginx
CVE-2016-4450
os/unix/ngx_files.c in nginx before 1.10.1 and 1.11.x before 1.11.1 allows remote attackers to cause a denial of service (NULL pointer dereference and worker process crash) via a crafted request, involving writing a client request body to a temporary file.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.164 (96.9th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 97th percentile — 96.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.164 · newest: 0.164 · change: 0.000
Affected products
- F5 nginx — versions 1.11.0
- Canonical Ubuntu Linux — versions 14.04, 15.10, 16.04
- Debian Linux — versions 8.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.securitytracker.com/id/1036019 (VDB Entry, Third Party Advisory, vdb-entry)
- security.gentoo.org/glsa/201606-06 (vendor-advisory, Third Party Advisory)
- mailman.nginx.org/pipermail/nginx-announce/2016/000179.html (Vendor Advisory, mailing-list)
- www.ubuntu.com/usn/USN-2991-1 (vendor-advisory, Third Party Advisory)
- www.debian.org/security/2016/dsa-3592 (vendor-advisory, Third Party Advisory)
- access.redhat.com/errata/RHSA-2016:1425 (vendor-advisory, Third Party Advisory)
- www.securityfocus.com/bid/90967 (VDB Entry, Third Party Advisory, vdb-entry)
Frequently asked questions
- What is CVE-2016-4450?
- CVE-2016-4450 is a high-severity vulnerability in F5 nginx, classified under NULL Pointer Dereference. CVSS score: 7.5/10. Published 2016-06-07.
- How severe is CVE-2016-4450?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2016-4450 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.