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MEDIUM · 4.9

CVE-2018-12433

cryptlib through 3.4.4 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 eith...

Vulnerability Description

cryptlib through 3.4.4 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. NOTE: the vendor does not include side-channel attacks within its threat model

CVSS Score

4.9

MEDIUM

CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N
Attack Vector
PHYSICAL
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE

Affected Products

VendorProductVersions
CryptlibCryptlib<= 3.4.4

Related Weaknesses (CWE)

CWE-320CWE-200

References

FAQ

What is CVE-2018-12433?

CVE-2018-12433 is a vulnerability with a CVSS score of 4.9 (MEDIUM). cryptlib through 3.4.4 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 eith...

How severe is CVE-2018-12433?

CVE-2018-12433 has been rated MEDIUM with a CVSS base score of 4.9/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2018-12433?

Check the references section above for vendor advisories and patch information. Affected products include: Cryptlib Cryptlib.