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Fencer Vulns
medium 6.3

CVE-2019-13627 json

It was discovered that there was a ECDSA timing attack in the libgcrypt20 cryptographic library.

published 2019-09-25 7 y ago modified 2026-10-14 26 d ago also EUVD-2019-5059

cvss
6.3
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.5%
EPSS 0.5% chance of exploitation in 30 days, percentile 45%
public exploits
0
none known

Summary

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.

Patch / fix

  • Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP V3.1.5
  • Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP V3.1.5
  • Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP V3.1.5
  • libgcrypt20 Debian 14, Debian 13, Debian 12 1.8.5-1

debian advisories DEBIAN-CVE-2019-13627

  • libgcrypt20 Ubuntu 16.04 LTS 1.6.5-2ubuntu0.6
  • libgcrypt20 Ubuntu 18.04 LTS 1.8.1-4ubuntu1.2
  • libgcrypt11 Ubuntu Pro 14.04 LTS 1.5.3-2ubuntu4.6+esm1

ubuntu advisories UBUNTU-CVE-2019-13627

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • libgcrypt RHEL 8 1.8.5-4.el8

red hat advisories RHSA-2020:4482

  • libgcrypt SLE Module for Basesystem 15 SP1 1.8.2-8.12.1
  • libgcrypt SLES for SAP 12 SP5, SLES for SAP 12 SP4, SLES for SAP 12 SP3 +18 more 1.6.1-16.68.1
  • libgcrypt SLE Module for Basesystem 15 1.8.2-6.20.1

suse advisories SUSE-SU-2019:3392-1SUSE-SU-2019:2510-1SUSE-SU-2019:2349-1

  • libgcrypt openSUSE Tumbleweed 1.9.4-1.2
  • libgcrypt openSUSE Leap 15.1 1.8.2-lp151.9.7.1
  • libgcrypt openSUSE Leap 15.0 1.8.2-lp150.5.13.1

opensuse advisories openSUSE-SU-2024:10941-1openSUSE-SU-2020:0022-1openSUSE-SU-2019:2161-1

  • libgcrypt Rocky Linux 8 1.8.5-4.el8

rocky linux advisories RLSA-2020:4482

  • libgcrypt Alpine 3.24, Alpine 3.23, Alpine 3.22 +13 more 1.8.5-r0

alpine advisories ALPINE-CVE-2019-13627

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • grub2 Azure Linux 3.0 2.06-25

azure linux advisories AZL-41066

Azure Linux vulnerability data, Copyright (c) Microsoft Corporation, from https://github.com/microsoft/AzureLinuxVulnerabilityData via OSV, under the MIT licence; changed: normalised to fixed package versions per release. MIT

  • libgcrypt Arch Linux 1.8.5-1
  • lib32-libgcrypt Arch Linux 1.8.5-1

arch linux advisories AVG-1044AVG-1045

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2019-13627 updated cvss 6.3

libgcrypt: ECDSA timing attack allowing private key leak

  • Red Hat Enterprise Linux BaseOS (v. 8) libgcrypt 1.8.5-4.el8
    fixed: vendor fix RHSA-2020:4482
  • Red Hat Enterprise Linux 5 libgcrypt Red Hat Enterprise Linux 6 libgcrypt Red Hat Enterprise Linux 7 libgcrypt
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

cisa ICSA-23-348-10 updated cvss 6.3

Siemens SIMATIC S7-1500

  • Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0) >= 3.1.0, < 3.1.5 Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AC0) >= 3.1.0, < 3.1.5 Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AB0) >= 3.1.0, < 3.1.5 Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AC0) >= 3.1.0, < 3.1.5 Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP (6AG1518-4AX00-4AC0) >= 3.1.0, < 3.1.5
    affected: fixed in V3.1.5, mitigation support.industry.siemens.com

Facts from CISA's republication of the vendor's own advisory (CSAF); the linked advisory is the authoritative source. CISA notification · csaf

Exploit prediction

0.55% chance of exploitation in the next 30 days, higher than 45% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 6.3 CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N
NVD 2.0 2.6 AV:L/AC:H/Au:N/C:P/I:P/A:N

Affected products

  • Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP
  • Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP
  • Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.