CVE-2018-0495
MEDIUMLibgcrypt < 1.7.10 and 1.8.x < 1.8.3 - ECDSA Key Discovery via Memory-Cache Side-Channel Attack
Title source: llmExploitation Summary
EIP tracks 2 public exploits for CVE-2018-0495. PoCs published by vaishakhcv, winterwolf32.
AI-analyzed exploit summary This repository contains a functional exploit for CVE-2018-0495, a side-channel vulnerability in OpenSSL's ECDSA implementation. The PoC uses a Flush+Reload attack to extract private keys from a vulnerable OpenSSL server.
Description
Libgcrypt before 1.7.10 and 1.8.x before 1.8.3 allows a memory-cache side-channel attack on ECDSA signatures that can be mitigated through the use of blinding during the signing process in the _gcry_ecc_ecdsa_sign function in cipher/ecc-ecdsa.c, 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.
Exploits (2)
This repository contains a functional exploit for CVE-2018-0495, a side-channel vulnerability in OpenSSL's ECDSA implementation. The PoC uses a Flush+Reload attack to extract private keys from a vulnerable OpenSSL server.
This repository contains a functional exploit for CVE-2018-0495, a side-channel vulnerability in OpenSSL's ECDSA implementation. The PoC uses a Flush+Reload attack to extract private keys from a vulnerable OpenSSL server.
References (21)
Scores
CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N