Integer overflow in OpenBSD
CVE-2016-6241
Integer overflow in the amap_alloc1 function in OpenBSD 5.8 and 5.9 allows local users to execute arbitrary code with kernel privileges via a large size value.
Vulnerability class: Integer Overflow
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: 0.006 (45.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 45th percentile — 45.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000
Affected products
- OpenBSD — versions 5.8, 5.9
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.securitytracker.com/id/1036318 (vdb-entry)
- www.openbsd.org/errata59.html (Release Notes)
- www.openwall.com/lists/oss-security/2016/07/14/5 (mailing-list, Mailing List, Third Party Advisory)
- www.openwall.com/lists/oss-security/2016/07/17/7 (mailing-list, Exploit, Mailing List, Third Party Advisory)
- www.openbsd.org/errata58.html (Release Notes)
- www.securityfocus.com/bid/91805 (vdb-entry)
Frequently asked questions
- What is CVE-2016-6241?
- CVE-2016-6241 is a high-severity vulnerability in OpenBSD, classified under Integer Overflow or Wraparound. CVSS score: 7.8/10. Published 2017-03-07.
- How severe is CVE-2016-6241?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2016-6241 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.