Vulnerability Details : CVE-2018-12438
The Elliptic Curve Cryptography library (aka sunec or libsunec) allows a memory-cache side-channel attack on ECDSA signatures, aka the Return Of the Hidden Number Problem or ROHNP. To discover an ECDSA key, the attacker needs access to either the local machine or a different virtual machine on the same physical host.
Vulnerability category: Information leak
Products affected by CVE-2018-12438
- cpe:2.3:a:libsunec_project:libsunec:-:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2018-12438
0.14%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 50 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2018-12438
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
1.9
|
LOW | AV:L/AC:M/Au:N/C:P/I:N/A:N |
3.4
|
2.9
|
NIST | |
|
4.9
|
MEDIUM | CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N |
0.5
|
4.0
|
NIST |
CWE ids for CVE-2018-12438
-
The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.Assigned by: nvd@nist.gov (Primary)
-
Assigned by: nvd@nist.gov (Primary)
References for CVE-2018-12438
-
https://www.nccgroup.trust/us/our-research/technical-advisory-return-of-the-hidden-number-problem/
Technical Advisory: "ROHNP"- Key Extraction Side Channel in Multiple Crypto LibrariesExploit;Technical Description;Third Party Advisory
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