Vulnerability in F5 nginx
CVE-2016-1247
The nginx package before 1.6.2-5+deb8u3 on Debian jessie, the nginx packages before 1.4.6-1ubuntu3.6 on Ubuntu 14.04 LTS, before 1.10.0-0ubuntu0.16.04.3 on Ubuntu 16.04 LTS, and before 1.10.1-0ubuntu1.1 on Ubuntu 16.10, and the nginx ebuild before 1.10.2-r3 on Gentoo allow local users with access to the web server user account to gain root privileges via a symlink attack on the error log.
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: 0.049 (91.9th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 92nd percentile — 91.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.049 · newest: 0.049 · change: 0.000
Affected products
- F5 nginx
- Canonical Ubuntu Linux — versions 16.10, 16.04, 14.04
- Debian Linux — versions 8.0
- Fedoraproject Fedora — versions 33, 34, 35
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.exploit-db.com/exploits/40768/ (Exploit, VDB Entry, Third Party Advisory, exploit)
- www.securityfocus.com/archive/1/539796/100/0/threaded (mailing-list, VDB Entry, Third Party Advisory)
- www.debian.org/security/2016/dsa-3701 (vendor-advisory, Vendor Advisory)
- www.youtube.com/watch (Exploit, Third Party Advisory)
- www.securityfocus.com/bid/93903 (VDB Entry, Third Party Advisory, vdb-entry)
- legalhackers.com/advisories/Nginx-Exploit-Deb-Root-PrivEsc-CVE-2016-1247.html (Exploit, Third Party Advisory)
- www.ubuntu.com/usn/USN-3114-1 (vendor-advisory, Vendor Advisory)
- seclists.org/fulldisclosure/2017/Jan/33 (mailing-list, Mailing List, Third Party Advisory)
- security.gentoo.org/glsa/201701-22 (vendor-advisory, Third Party Advisory)
- www.securitytracker.com/id/1037104 (VDB Entry, Third Party Advisory, vdb-entry)
Frequently asked questions
- What is CVE-2016-1247?
- CVE-2016-1247 is a high-severity vulnerability in F5 nginx, classified under Improper Link Resolution Before File Access. CVSS score: 7.8/10. Published 2016-11-29.
- How severe is CVE-2016-1247?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2016-1247 known to be exploited?
- 19 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.