CVE Vulnerability

CVE-2018-12435

Botan 2.5.0 through 2.6.0 before 2.7.0 allows a memory-cache side-channel attack on ECDSA signatures, aka the Return Of the Hidden Number Problem or ROHNP, related to dsa/dsa.cpp, ec_group/ec_group.cpp, and ecdsa/ecdsa.cpp. To discover an ECDSA key, the attacker needs access to either the local machine or a different virtual machine on the same physical host.

1.9 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 3.4 / Impact : 2.9

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact PARTIAL

Integrity Impact NONE

Availability Impact NONE

Scope

5.9 /10

CVSS v3.0 : MEDIUM

V3 Legend

Vector :

Exploitability : 1.4 / Impact : 4

Attack Vector LOCAL

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope CHANGED

References
Link Resource
https://www.nccgroup.trust/us/our-research/technical-advisory-return-of-the-hidden-number-problem/ Exploit Third Party Advisory
https://github.com/randombit/botan/commit/48fc8df51d99f9d8ba251219367b3d629cc848e3 Patch Third Party Advisory
https://botan.randombit.net/security.html Third Party Advisory
Configurations

Configuration 1

cpe:2.3:a:botan_project:botan:*:*:*:*:*:*:*:*
Information

Published : 2018-06-15 02:29

Updated : 2018-08-22 07:57

NVD link : CVE-2018-12435

Mitre link : CVE-2018-12435

Products Affected
No products.
CWE
CWE-200