Vulnerability CVE-2018-12438


Published: 2018-06-14   Modified: 2018-06-15

Description:
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.

Type:

CWE-320

(Key Management Errors)

Vendor: Libtom
Product: Libtomcrypt 
Vendor: Botan project
Product: Botan 
Vendor: Mozilla
Product: Network security services 
Vendor: Gnupg
Product: Libgcrypt 
Vendor: Openssl
Product: Openssl 
Vendor: Libsunec project
Product: Libsunec 
Vendor: Matrixssl
Product: Matrixssl 
Vendor: Cryptlib
Product: Cryptlib 
Vendor: Openbsd
Product: Libressl 
Vendor: Google
Product: Boringssl 
Vendor: Wolfssl
Product: Wolfcrypt 

CVSS2 => (AV:L/AC:M/Au:N/C:P/I:N/A:N)

CVSS Base Score
Impact Subscore
Exploitability Subscore
1.9/10
2.9/10
3.4/10
Exploit range
Attack complexity
Authentication
Local
Medium
No required
Confidentiality impact
Integrity impact
Availability impact
Partial
None
None

 References:
https://www.nccgroup.trust/us/our-research/technical-advisory-return-of-the-hidden-number-problem/

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