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cve[email protected]CVE-2018-12434
HistoryOct 03, 2022 - 4:22 p.m.

CVE-2018-12434

2022-10-0316:22:08
CWE-200
web.nvd.nist.gov
23
cve-2018-12434
libressl
memory-cache
side-channel attack
dsa
ecdsa
rohnp
security vulnerability

4.7 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N

4.7 Medium

AI Score

Confidence

High

1.9 Low

CVSS2

Access Vector

Access Complexity

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

AV:L/AC:M/Au:N/C:P/I:N/A:N

0.0005 Low

EPSS

Percentile

17.0%

LibreSSL before 2.6.5 and 2.7.x before 2.7.4 allows a memory-cache side-channel attack on DSA and ECDSA signatures, aka the Return Of the Hidden Number Problem or ROHNP. To discover a key, the attacker needs access to either the local machine or a different virtual machine on the same physical host.

Affected configurations

NVD
Node
openbsdlibresslRange<2.6.5
OR
openbsdlibresslMatch2.7.0
OR
openbsdlibresslMatch2.7.1
OR
openbsdlibresslMatch2.7.2
OR
openbsdlibresslMatch2.7.3

4.7 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N

4.7 Medium

AI Score

Confidence

High

1.9 Low

CVSS2

Access Vector

Access Complexity

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

AV:L/AC:M/Au:N/C:P/I:N/A:N

0.0005 Low

EPSS

Percentile

17.0%