Vulnerability Details : CVE-2018-0495

Libgcrypt before 1.7.10 and 1.8.x before 1.8.3 allows a memory-cache side-channel attack on ECDSA signatures that can be mitigated through the use of blinding during the signing process in the _gcry_ecc_ecdsa_sign function in cipher/ecc-ecdsa.c, 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.
Published 2018-06-13 23:29:00
Updated 2020-08-24 17:37:01
Source Debian GNU/Linux
View at NVD,   CVE.org

Exploit prediction scoring system (EPSS) score for CVE-2018-0495

EPSS FAQ
0.08%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 32 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2018-0495

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
4.7
 MEDIUM CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
1.0
3.6
 NIST

CWE ids for CVE-2018-0495

  • The product behaves differently or sends different responses under different circumstances in a way that is observable to an unauthorized actor, which exposes security-relevant information about the state of the product, such as whether a particular operation was successful or not.
    Assigned by: nvd@nist.gov (Primary)

References for CVE-2018-0495

Products affected by CVE-2018-0495

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