PT-2016-3375 · Openssl+2 · Openssl+2

Billy Brumley + 1 · Published 2016-12-31 · Updated 2024-06-15 · CVE-2016-7056

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Name of the Vulnerable Software and Affected Versions OpenSSL versions 1.0.1u and earlier

Description A timing attack flaw was found in OpenSSL that could allow a malicious user with local access to recover ECDSA P-256 private keys. The vulnerability is related to errors in cryptographic key management, which can be exploited to restore closed keys.

Recommendations For OpenSSL versions 1.0.1u and earlier, consider restricting access to sensitive cryptographic operations until a patch is available. As a temporary workaround, limit the use of ECDSA P-256 private keys to minimize the risk of exploitation. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Weakness Enumeration

CWE-385

CWE-320

Related Identifiers

BDU:2022-02405

CVE-2016-7056

DLA-814-1

DSA-3773-1

OPENSUSE-SU-2018_0458-1

OPENSUSE-SU-2024:11125-1

OPENSUSE-SU-2024:11126-1

OPENSUSE-SU-2024:11127-1

RHSA-2017:1413

RHSA-2017:1414

RHSA-2017:1801

SUSE-SU-2017:0461-1

SUSE-SU-2017:0495-1

SUSE-SU-2017:0585-1

SUSE-SU-2017:0605-1

SUSE-SU-2017:2700-1

SUSE-SU-2018:0112-1

USN-3181-1

Affected Products

Openssl

Suse

Ubuntu

References · 271

• 🔥 https://github.com/cujanovic/CVE-2016-8610-PoC · Exploit
• https://osv.dev/vulnerability/SUSE-SU-2018:0112-1 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2016-7056 · Patch
• https://access.redhat.com/errata/RHSA-2017:1414 · Vendor Advisory
• https://ftp.openbsd.org/pub/OpenBSD/patches/6.0/common/016_libcrypto.patch.sig · Patch
• https://ftp.openbsd.org/pub/OpenBSD/patches/5.9/common/033_libcrypto.patch.sig · Patch
• https://access.redhat.com/errata/RHSA-2017:1801 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2024:11127-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2017:0605-1 · Vendor Advisory
• https://people.canonical.com/~ubuntu-security/cve/2016/CVE-2016-7056.html · Patch
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-7056 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2016-7056 · Vendor Advisory
• https://ubuntu.com/security/CVE-2016-8610 · Vendor Advisory
• https://bdu.fstec.ru/vul/2022-02405 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2016-7056 · Vendor Advisory