CVE-2016-7056
First published: Wed Jan 11 2017(Updated: )
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.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Android | ||
| OpenSSL libcrypto | <=1.0.1u | |
| Debian | =8.0 | |
| Debian | =9.0 | |
| Red Hat Enterprise Linux | =6.0 | |
| Red Hat Enterprise Linux | =7.0 | |
| Ubuntu | =12.04 | |
| Ubuntu | =14.04 | |
| debian/openssl | 1.1.1w-0+deb11u1 1.1.1w-0+deb11u2 3.0.15-1~deb12u1 3.0.14-1~deb12u2 3.4.1-1 |
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Reference Links
- http://rhn.redhat.com/errata/RHSA-2017-1415.html
- http://www.securityfocus.com/bid/95375
- http://www.securitytracker.com/id/1037575
- https://access.redhat.com/errata/RHSA-2017:1413
- https://access.redhat.com/errata/RHSA-2017:1414
- https://access.redhat.com/errata/RHSA-2017:1801
- https://access.redhat.com/errata/RHSA-2017:1802
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-7056
- https://eprint.iacr.org/2016/1195
- https://ftp.openbsd.org/pub/OpenBSD/patches/5.9/common/033_libcrypto.patch.sig
- https://ftp.openbsd.org/pub/OpenBSD/patches/6.0/common/016_libcrypto.patch.sig
- https://git.openssl.org/?p=openssl.git%3Ba=commit%3Bh=8aed2a7548362e88e84a7feb795a3a97e8395008
- https://people.canonical.com/~ubuntu-security/cve/2016/CVE-2016-7056.html
- https://seclists.org/oss-sec/2017/q1/52
- https://security-tracker.debian.org/tracker/CVE-2016-7056
- https://www.debian.org/security/2017/dsa-3773
- https://launchpad.net/bugs/cve/CVE-2016-7056
- http://seclists.org/oss-sec/2017/q1/52
- http://eprint.iacr.org/2016/1195
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1412127
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1412125
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1412126
- https://git.openssl.org/?p=openssl.git;a=commit;h=8aed2a7548362e88e84a7feb795a3a97e8395008
- https://access.redhat.com/errata/RHSA-2017:1415
- https://access.redhat.com/errata/RHBA-2017:1929
- https://bugzilla.redhat.com/show_bug.cgi?id=1412120
- https://android.googlesource.com/platform/external/boringssl/+/13179a8e75fee98740b5ce728752aa7294b3e32d
- https://source.android.com/docs/security/bulletin/2017-05-01 (Advisory)
- https://eprint.iacr.org/2016/1195.pdf
- https://git.openssl.org/?p=openssl.git;a=commit;h=f54be179aa4cbbd944728771d7d59ed588158a12
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-7056
- https://nvd.nist.gov/vuln/detail/CVE-2016-7056
- https://ubuntu.com/security/CVE-2016-7056
Frequently Asked Questions
What is the severity of CVE-2016-7056?
CVE-2016-7056 has a high severity rating due to its potential to allow local users to recover private keys.
How do I fix CVE-2016-7056?
To fix CVE-2016-7056, update OpenSSL to versions 1.1.1w or later, or apply relevant patches provided by your Linux distribution.
Which versions of OpenSSL are affected by CVE-2016-7056?
CVE-2016-7056 affects OpenSSL versions 1.0.1u and earlier.
Can CVE-2016-7056 be exploited remotely?
CVE-2016-7056 cannot be exploited remotely as it requires local access to the vulnerable system.
What is the impact of a successful exploit of CVE-2016-7056?
A successful exploit of CVE-2016-7056 may allow an attacker to recover ECDSA P-256 private keys, compromising the security of encrypted communications.
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