Vulnerability in NetBSD
CVE-2016-6253
mail.local in NetBSD versions 6.0 through 6.0.6, 6.1 through 6.1.5, and 7.0 allows local users to change ownership of or append data to arbitrary files on the target system via a symlink attack on the user mailbox.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.036 (88.9th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 89th percentile — 88.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.036 · newest: 0.036 · change: 0.000
Affected products
- NetBSD — versions 6.0, 6.0.1, 6.0.2
Weakness classification (CWE)
Public proof-of-concept exploits
References
- ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2016-006.txt.asc (vendor-advisory, Vendor Advisory)
- packetstormsecurity.com/files/138021/NetBSD-mail.local-8-Local-Root.html (Exploit, VDB Entry, Third Party Advisory)
- www.exploit-db.com/exploits/40141/ (Exploit, VDB Entry, Third Party Advisory, exploit)
- www.exploit-db.com/exploits/40385/ (Exploit, VDB Entry, Third Party Advisory, exploit)
- www.securityfocus.com/bid/92101 (VDB Entry, Third Party Advisory, vdb-entry)
- akat1.pl/ (Exploit, Third Party Advisory)
- www.securitytracker.com/id/1036429 (VDB Entry, Third Party Advisory, vdb-entry)
- www.rapid7.com/db/modules/exploit/unix/local/netbsd_mail_local (Exploit, VDB Entry, Third Party Advisory)
Frequently asked questions
- What is CVE-2016-6253?
- CVE-2016-6253 is a high-severity vulnerability in NetBSD, classified under Improper Link Resolution Before File Access. CVSS score: 7.8/10. Published 2017-01-20.
- How severe is CVE-2016-6253?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2016-6253 known to be exploited?
- 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.