Vulnerability in OpenSSL
CVE-2016-7056
A timing attack flaw was found in OpenSSL 1.0.1u and before that could allow a malicious user with local access to recover ECDSA P-256 private keys.
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:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.006 (46.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 46th percentile — 46.3% 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
- OpenSSL
- The OpenSSL Project — versions openssl 1.0.1u
- Canonical Ubuntu Linux — versions 12.04, 14.04
- Debian Linux — versions 8.0, 9.0
- Red Hat Enterprise Linux — versions 6.0, 7.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- eprint.iacr.org/2016/1195 (Third Party Advisory)
- access.redhat.com/errata/RHSA-2017:1801 (vendor-advisory, Third Party Advisory)
- git.openssl.org/
- access.redhat.com/errata/RHSA-2017:1413 (vendor-advisory, Third Party Advisory)
- ftp.openbsd.org/pub/OpenBSD/patches/6.0/common/016_libcrypto.patch.sig (Patch, Third Party Advisory)
- www.securitytracker.com/id/1037575 (Patch, VDB Entry, Third Party Advisory, vdb-entry)
- access.redhat.com/errata/RHSA-2017:1414 (vendor-advisory, Third Party Advisory)
- seclists.org/oss-sec/2017/q1/52 (mailing-list, Mailing List, Third Party Advisory)
- www.debian.org/security/2017/dsa-3773 (vendor-advisory, Third Party Advisory)
- bugzilla.redhat.com/show_bug.cgi (Patch, Third Party Advisory, Issue Tracking)
Frequently asked questions
- What is CVE-2016-7056?
- CVE-2016-7056 is a medium-severity vulnerability in OpenSSL, classified under CWE-385. CVSS score: 5.5/10. Published 2018-09-10.
- How severe is CVE-2016-7056?
- Medium severity. CVSS v3 base score is 5.5 out of 10.
- Is CVE-2016-7056 known to be exploited?
- 4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.