CVE-2018-12436: Infoleak
wolfcrypt/src/ecc.c in wolfSSL before 3.15.1.patch 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.
Affected Software
Remediation
Event History
Frequently Asked Questions
What is the vulnerability ID for this issue?
The vulnerability ID for this issue is CVE-2018-12436.
What is the severity of CVE-2018-12436?
The severity of CVE-2018-12436 is medium with a CVSS score of 4.7.
What is the affected software?
The affected software is Wolfssl Wolfssl version up to 3.15.3.
What is the possible impact of the vulnerability?
The vulnerability allows a memory-cache side-channel attack on ECDSA signatures, which could lead to the discovery of an ECDSA key.
Are there any patches or fixes available for this vulnerability?
Yes, wolfSSL has provided a patch to address this vulnerability. More information can be found at the following reference links: [Link 1](https://github.com/wolfSSL/wolfssl/commit/9b9568d500f31f964af26ba8d01e542e1f27e5ca), [Link 2](https://www.nccgroup.trust/us/our-research/technical-advisory-return-of-the-hidden-number-problem/), [Link 3](https://www.wolfssl.com/wolfssh-and-rohnp/).