Description
It was discovered that there was a ECDSA timing attack in the libgcrypt20 cryptographic library. Version affected: 1.8.4-5, 1.7.6-2+deb9u3, and 1.6.3-2+deb8u4. Versions fixed: 1.8.5-2 and 1.6.3-2+deb8u7.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | libgcrypt20 | 1.8.5-1 | — |
| Debian 13 | libgcrypt20 | 1.8.5-1 | — |
| Debian 12 | libgcrypt20 | 1.8.5-1 | — |
| Debian 8 | libgcrypt20 | 1.6.3-2+deb8u6 | DLA-1931-2, DLA-1931-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 18.04 LTS | libgcrypt20 | 1.8.1-4ubuntu1.2 | USN-4236-1 |
| Ubuntu 16.04 LTS | libgcrypt20 | 1.6.5-2ubuntu0.6 | USN-4236-2 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 14.04 LTS | libgcrypt11 | 1.5.3-2ubuntu4.6+esm1 | USN-4236-3 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 8 | libgcrypt +1 | 1.8.5-4.el8 | RHSA-2020:4482 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 8 | libgcrypt | 1.8.5-4.el8 | RLSA-2020:4482 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP1 | libgcrypt | 1.8.2-8.12.1 | SUSE-SU-2019:3392-1 |
| SLES 15 | libgcrypt | 1.8.2-6.20.1 | SUSE-SU-2019:2349-1 |
| SLES 12 SP5 | libgcrypt | 1.6.1-16.68.1 | SUSE-SU-2019:2510-1 |
| SLES 12 SP4 | libgcrypt | 1.6.1-16.68.1 | SUSE-SU-2019:2510-1 |
| SLES 12 SP3 | libgcrypt | 1.6.1-16.68.1 | SUSE-SU-2019:2510-1 |
Show 13 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP2 | libgcrypt | 1.6.1-16.68.1 | SUSE-SU-2019:2510-1 |
| SLES 12 SP1 | libgcrypt | 1.6.1-16.68.1 | SUSE-SU-2019:2510-1 |
| SLES for SAP 12 SP5 | libgcrypt | 1.6.1-16.68.1 | SUSE-SU-2019:2510-1 |
| SLES for SAP 12 SP4 | libgcrypt | 1.6.1-16.68.1 | SUSE-SU-2019:2510-1 |
| SLES for SAP 12 SP3 | libgcrypt | 1.6.1-16.68.1 | SUSE-SU-2019:2510-1 |
| SLES for SAP 12 SP2 | libgcrypt | 1.6.1-16.68.1 | SUSE-SU-2019:2510-1 |
| SLES for SAP 12 SP1 | libgcrypt | 1.6.1-16.68.1 | SUSE-SU-2019:2510-1 |
| SUSE OpenStack Cloud Crowbar 8 | libgcrypt | 1.6.1-16.68.1 | SUSE-SU-2019:2510-1 |
| SUSE OpenStack Cloud 8 | libgcrypt | 1.6.1-16.68.1 | SUSE-SU-2019:2510-1 |
| SUSE OpenStack Cloud 7 | libgcrypt | 1.6.1-16.68.1 | SUSE-SU-2019:2510-1 |
| SUSE HPE Helion OpenStack 8 | libgcrypt | 1.6.1-16.68.1 | SUSE-SU-2019:2510-1 |
| SUSE Enterprise Storage 5 | libgcrypt | 1.6.1-16.68.1 | SUSE-SU-2019:2510-1 |
| SUSE Enterprise Storage 4 | libgcrypt | 1.6.1-16.68.1 | SUSE-SU-2019:2510-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | libgcrypt | 1.9.4-1.2 | openSUSE-SU-2024:10941-1 |
| openSUSE Leap 15.1 | libgcrypt | 1.8.2-lp151.9.7.1 | openSUSE-SU-2020:0022-1 |
| openSUSE Leap 15.0 | libgcrypt | 1.8.2-lp150.5.13.1 | openSUSE-SU-2019:2161-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | libgcrypt | 1.8.5-r0 | — |
| Alpine v3.23 | libgcrypt | 1.8.5-r0 | — |
| Alpine v3.22 | libgcrypt | 1.8.5-r0 | — |
| Alpine v3.21 | libgcrypt | 1.8.5-r0 | — |
| Alpine v3.20 | libgcrypt | 1.8.5-r0 | — |
Show 11 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | libgcrypt | 1.8.5-r0 | — |
| Alpine v3.18 | libgcrypt | 1.8.5-r0 | — |
| Alpine v3.17 | libgcrypt | 1.8.5-r0 | — |
| Alpine v3.16 | libgcrypt | 1.8.5-r0 | — |
| Alpine v3.15 | libgcrypt | 1.8.5-r0 | — |
| Alpine v3.14 | libgcrypt | 1.8.5-r0 | — |
| Alpine v3.13 | libgcrypt | 1.8.5-r0 | — |
| Alpine v3.12 | libgcrypt | 1.8.5-r0 | — |
| Alpine v3.11 | libgcrypt | 1.8.5-r0 | — |
| Alpine v3.10 | libgcrypt | 1.8.5-r0 | — |
| Alpine v3.9 | libgcrypt | 1.8.5-r0 | — |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 3 | grub2 | 2.06-25 | — |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 8 | libgcrypt +1 | 1.8.5-4.el8 | ELSA-2020-4482 |
Advisories 18
- RHSA-2020:4482 Red Hat Security Advisory: libgcrypt security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Oct 14, 2026
- SSA-398330 SSA-398330: Vulnerabilities in the additional GNU/Linux subsystem of the SIMATIC S7-1500 CPU 1518(F)-4 PN/DP MFP >= V3.1.0 and < V3.1.5 Siemens ProductCERT · Oct 13, 2026
- WID-SEC-2025-0227 IBM QRadar SIEM: Mehrere Schwachstellen BSI CERT-Bund (WID) · Aug 11, 2026
- USN-4236-3 libgcrypt11 vulnerability Ubuntu Security Notices (USN) · Apr 22, 2026
- USN-4236-2 libgcrypt20 vulnerability Ubuntu Security Notices (USN) · Apr 22, 2026
- USN-4236-1 libgcrypt20 vulnerability Ubuntu Security Notices (USN) · Apr 22, 2026
- DLA-1931-2 libgcrypt20 - regression update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-1931-1 libgcrypt20 - security update Debian Security (DSA / DLA) · Mar 9, 2026
- RLSA-2020:4482 Moderate: libgcrypt security, bug fix, and enhancement update Rocky Linux Security Advisories · Feb 5, 2026
- SUSE-SU-2019:2510-1 Security update for libgcrypt SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2019:2161-1 Security update for libgcrypt SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:2349-1 Security update for libgcrypt SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:3392-1 Security update for libgcrypt SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2020:0022-1 Security update for libgcrypt SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:10941-1 libgcrypt-cavs-1.9.4-1.2 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- ICSA-23-348-10 Siemens SIMATIC S7-1500 CISA ICS & IT advisories · Aug 12, 2025
- WID-SEC-2022-0193 Red Hat Enterprise Linux: Mehrere Schwachstellen BSI CERT-Bund (WID) · Sep 27, 2023
- ELSA-2020-4482 Moderate: libgcrypt security, bug fix, and enhancement update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Nov 10, 2020
References
- openSUSE-SU-2019:2161 vendor-advisory
- [debian-lts-announce] 20190924 [SECURITY] [DLA 1931-1] libgcrypt20 security update mailing-list
- https://security-tracker.debian.org/tracker/CVE-2019-13627
- https://github.com/gpg/libgcrypt/releases/tag/libgcrypt-1.8.5
- [oss-security] 20191002 Minerva: ECDSA key recovery from bit-length leakage mailing-list
- https://minerva.crocs.fi.muni.cz/
- [debian-lts-announce] 20200101 [SECURITY] [DLA 1931-2] libgcrypt20 regression update mailing-list
- USN-4236-1 vendor-advisory
- openSUSE-SU-2020:0022 vendor-advisory
- USN-4236-2 vendor-advisory
- USN-4236-3 vendor-advisory
- GLSA-202003-32 vendor-advisory