Vulnerability Description
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.
CVSS Score
5.5
MEDIUM
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Openssl | Openssl | <= 1.0.1u |
| Debian | Debian Linux | 8.0 |
| Redhat | Enterprise Linux | 6.0 |
| Canonical | Ubuntu Linux | 12.04 |
Related Weaknesses (CWE)
References
- http://rhn.redhat.com/errata/RHSA-2017-1415.htmlThird Party Advisory
- http://www.securityfocus.com/bid/95375Third Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1037575PatchThird Party AdvisoryVDB Entry
- https://access.redhat.com/errata/RHSA-2017:1413Third Party Advisory
- https://access.redhat.com/errata/RHSA-2017:1414Third Party Advisory
- https://access.redhat.com/errata/RHSA-2017:1801Third Party Advisory
- https://access.redhat.com/errata/RHSA-2017:1802Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-7056Issue TrackingPatchThird Party Advisory
- https://eprint.iacr.org/2016/1195Third Party Advisory
- https://ftp.openbsd.org/pub/OpenBSD/patches/5.9/common/033_libcrypto.patch.sigPatchThird Party Advisory
- https://ftp.openbsd.org/pub/OpenBSD/patches/6.0/common/016_libcrypto.patch.sigPatchThird Party Advisory
- https://git.openssl.org/?p=openssl.git%3Ba=commit%3Bh=8aed2a7548362e88e84a7feb79
- https://people.canonical.com/~ubuntu-security/cve/2016/CVE-2016-7056.htmlPatchThird Party Advisory
- https://seclists.org/oss-sec/2017/q1/52Mailing ListThird Party Advisory
- https://security-tracker.debian.org/tracker/CVE-2016-7056PatchThird Party AdvisoryVDB Entry
FAQ
What is CVE-2016-7056?
CVE-2016-7056 is a vulnerability with a CVSS score of 5.5 (MEDIUM). 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.
How severe is CVE-2016-7056?
CVE-2016-7056 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2016-7056?
Check the references section above for vendor advisories and patch information. Affected products include: Openssl Openssl, Debian Debian Linux, Redhat Enterprise Linux, Canonical Ubuntu Linux.