CVE-2018-0495
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.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2018-0495
Vendor advisory: suse — https://www.suse.com/security/cve/CVE-2018-0495.html
Vendor advisory: arch — https://security.archlinux.org/ASA-201806-10
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| arch | fixed | 1.8.3-1 | |
| sles | affected | | |
| debian | bookworm | fixed | 1.8.3-1 |
| debian | bullseye | fixed | 1.8.3-1 |
| debian | forky | fixed | 1.8.3-1 |
| debian | sid | fixed | 1.8.3-1 |
| debian | trixie | fixed | 1.8.3-1 |
References
Verify integrity in audit chain (admin only). AS-IS.