| Name | 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. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DLA-1405-1, DSA-4231-1 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| libgcrypt20 (PTS) | jessie, jessie (lts) | 1.6.3-2+deb8u9 | fixed |
| stretch (security), stretch (lts), stretch | 1.7.6-2+deb9u4 | fixed | |
| buster | 1.8.4-5+deb10u1 | fixed | |
| bullseye | 1.8.7-6 | fixed | |
| bookworm | 1.10.1-3 | fixed | |
| sid, trixie | 1.11.0-6 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| libgcrypt11 | source | wheezy | (not affected) | |||
| libgcrypt11 | source | (unstable) | (unfixed) | |||
| libgcrypt20 | source | jessie | 1.6.3-2+deb8u5 | DLA-1405-1 | ||
| libgcrypt20 | source | stretch | 1.7.6-2+deb9u3 | DSA-4231-1 | ||
| libgcrypt20 | source | (unstable) | 1.8.3-1 |
https://dev.gnupg.org/T4011
https://git.gnupg.org/cgi-bin/gitweb.cgi?p=libgcrypt.git;a=commit;h=9010d1576e278a4274ad3f4aa15776c28f6ba965
[wheezy] - libgcrypt11 <not-affected> (Vulnerable code not present)