CVE-2018-0495

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.

Score
CVSS 3.0 4.7 Medium
Status
Modified - security@debian.org
Published
2018-06-13
Last modified
2026-10-14
Weaknesses
CWE-203

Affected products

References

 
 
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