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
02 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
03 Exploitation and scoring
- Exploitation
- Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
- SSVC decision
- Not assessed by CISA
- EPSS probability
- 0.86% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 58.6% of scored records. A rank, not a probability.
- NVD base score
- 4.7 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
- NVD analysis status
- Modified. NVD last modified this record on 2026-10-14.
- Red Hat severity
- Moderate. Red Hat's rating for its own products, not a CVSS rating.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2018-06-13 23:00Z8 YR AGO
- Last updated
- 2026-10-14 06:30Z15 DAYS AGO
- Reserved
- 2017-11-27
- Assigning CNA
- debian
- Record state
- PUBLISHED
- Severity
- Not rated by the issuing CNA
- CNA CVSS vector
- Not published by the issuing CNA
- Weaknesses
- Data version
- 5.2
- Document digest
- 587b426a309e17c78a79285a62e30ea62c8d97c949ae8098de748d213963e9ed
05 Affected products
06 References
- git.gnupg.orghttps://git.gnupg.org/cgi-bin/gitweb.cgi?p=libgcrypt.git%3Ba=commit%3Bh=9010d1576e278a4274ad3f4aa15776c28f6ba965
- www.securitytracker.com1041144http://www.securitytracker.com/id/1041144
- usn.ubuntu.comUSN-3850-1https://usn.ubuntu.com/3850-1/
- www.securitytracker.com1041147http://www.securitytracker.com/id/1041147
- www.nccgroup.trusthttps://www.nccgroup.trust/us/our-research/technical-advisory-return-of-the-hidden-number-problem/
- usn.ubuntu.comUSN-3689-1https://usn.ubuntu.com/3689-1/
- lists.gnupg.orghttps://lists.gnupg.org/pipermail/gnupg-announce/2018q2/000426.html
- usn.ubuntu.comUSN-3689-2https://usn.ubuntu.com/3689-2/
- usn.ubuntu.comUSN-3692-2https://usn.ubuntu.com/3692-2/
- lists.debian.org[debian-lts-announce] 20180629 [SECURITY] [DLA 1405-1] libgcrypt20 security updatehttps://lists.debian.org/debian-lts-announce/2018/06/msg00013.html
- www.debian.orgDSA-4231https://www.debian.org/security/2018/dsa-4231
- access.redhat.comRHSA-2018:3505https://access.redhat.com/errata/RHSA-2018:3505
- usn.ubuntu.comUSN-3850-2https://usn.ubuntu.com/3850-2/
- usn.ubuntu.comUSN-3692-1https://usn.ubuntu.com/3692-1/
- access.redhat.comRHSA-2018:3221https://access.redhat.com/errata/RHSA-2018:3221
- dev.gnupg.orghttps://dev.gnupg.org/T4011
- www.oracle.comhttps://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html
- access.redhat.comRHSA-2019:1297https://access.redhat.com/errata/RHSA-2019:1297
- access.redhat.comRHSA-2019:1296https://access.redhat.com/errata/RHSA-2019:1296
- access.redhat.comRHSA-2019:1543https://access.redhat.com/errata/RHSA-2019:1543
- access.redhat.comRHSA-2019:2237https://access.redhat.com/errata/RHSA-2019:2237
- cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/html/ssa-398330.html
07 Fixed in
Arch Linux
- libgcrypt Fixed in 1.8.3-1
Source: Arch Linux Security Tracker, the Arch Linux security team. Reformatted by exploit.cc.
Debian 12
- libgcrypt20 Fixed in 1.8.3-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- libgcrypt20 Fixed in 1.8.3-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- libgcrypt20 Fixed in 1.8.3-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 14.04 LTS
- libgcrypt11 Fixed in 1.5.3-2ubuntu4.6
- nss Fixed in 2:3.28.4-0ubuntu0.14.04.4
- openssl Fixed in 1.0.1f-1ubuntu2.26
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 16.04 LTS
- libgcrypt20 Fixed in 1.6.5-2ubuntu0.5
- nss Fixed in 2:3.28.4-0ubuntu0.16.04.4
- openssl Fixed in 1.0.2g-1ubuntu4.13
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 18.04 LTS
- libgcrypt20 Fixed in 1.8.1-4ubuntu1.1
- nss Fixed in 2:3.35-2ubuntu2.1
- openssl Fixed in 1.1.0g-2ubuntu4.1
- openssl1.0 Fixed in 1.0.2n-1ubuntu5.1
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.