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Fencer Vulns
medium 5.9

CVE-2024-2236 json

Libgcrypt: vulnerable to marvin attack

published 2024-03-06 2 y ago modified 2026-11-05 3 d ago also EUVD-2024-27192

cvss
5.9
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.1%
EPSS 1.1% chance of exploitation in 30 days, percentile 66%
public exploits
0
none known

Summary

A timing-based side-channel flaw was found in libgcrypt's RSA implementation. This issue may allow a remote attacker to initiate a Bleichenbacher-style attack, which can lead to the decryption of RSA ciphertexts.

Patch / fix

  • Red Hat Red Hat Enterprise Linux 9 0:1.10.0-11.el9
  • Red Hat Red Hat Enterprise Linux 9.2 Extended Update Support 0:1.10.0-10.el9_2.1
  • Red Hat Red Hat Enterprise Linux 9.4 Extended Update Support 0:1.10.0-10.el9_4.1
  • 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 Ubuntu 22.04 LTS 1.9.4-3ubuntu3.3
  • libgcrypt20 Ubuntu 24.04 LTS 1.10.3-2ubuntu0.2
  • libgcrypt20 Ubuntu 26.04 LTS 1.12.0-2ubuntu1.1
  • libgcrypt20 Ubuntu Pro FIPS-updates 22.04 LTS 1.9.4-3ubuntu3.3+Fips1
  • libgcrypt20 Ubuntu Pro FIPS-updates 24.04 LTS 1.12.0-2ubuntu1.1+Fips2

ubuntu advisories UBUNTU-CVE-2024-2236

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 9 1.10.0-11.el9
  • libgcrypt RHEL 9.2 EUS 1.10.0-10.el9_2.1
  • libgcrypt RHEL 9.4 EUS 1.10.0-10.el9_4.1

red hat advisories RHSA-2025:3534RHSA-2025:3530RHSA-2024:9404

  • libgpg-error SLES 16.0, Linux Micro 6.2, SLES for SAP applications 16.0 1.58-160000.1.1
  • libgcrypt SLES 16.0, Linux Micro 6.2, SLES for SAP applications 16.0 1.12.1-160000.1.1
  • libgcrypt SLES for SAP 15 SP5, SLES 15 SP5-LTSS, SLE Micro 5.5 +2 more 1.9.4-150500.12.3.3
  • libgcrypt SLES for SAP 15 SP3, SLES 15 SP3-LTSS, SLE Micro 5.2 +3 more 1.8.2-150100.8.45.1
  • libgcrypt SLE Module for Basesystem 15 SP7 1.11.0-150700.5.7.1
  • libgcrypt SLE Micro 5.4, SLE Micro 5.3, SLE High Performance Computing 15 SP4-ESPOS +5 more 1.9.4-150400.6.11.1
  • libgcrypt Linux Micro 6.1 1.10.3-slfo.1.1_2.1
  • libgcrypt SLE Module for Basesystem 15 SP6, openSUSE Leap 15.6 1.10.3-150600.3.9.1

suse advisories SUSE-FU-2026:21213-1SUSE-FU-2026:21232-1SUSE-SU-2025:02773-1SUSE-SU-2025:02756-1SUSE-SU-2025:02752-1SUSE-SU-2025:02719-1

  • libgpg-error openSUSE Leap 16.0 1.58-160000.1.1
  • libgcrypt openSUSE Leap 16.0 1.12.1-160000.1.1
  • libgcrypt openSUSE Tumbleweed 1.11.1-2.1

opensuse advisories openSUSE-FU-2026:20562-1openSUSE-SU-2025:15239-1

  • libgcrypt AlmaLinux 9 1.10.0-11.el9

almalinux advisories ALSA-2024:9404

  • libgcrypt Rocky Linux 9 1.10.0-11.el9

rocky linux advisories RLSA-2024:9404

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-2024-2236 updated cvss 5.9

libgcrypt: vulnerable to Marvin Attack

  • Red Hat Enterprise Linux 6 libgcrypt
    affected: workaround, no fix planned “Out of support scope”
  • Red Hat Enterprise Linux 7 libgcrypt Red Hat Enterprise Linux 8 libgcrypt
    affected: workaround, no fix available
  • Red Hat Enterprise Linux AppStream (v. 9) libgcrypt-devel 1.10.0-11.el9, libgcrypt-debuginfo 1.10.0-11.el9, libgcrypt-debugsource 1.10.0-11.el9, libgcrypt-devel-debuginfo 1.10.0-11.el9
    fixed: vendor fix RHSA-2024:9404
  • Red Hat Enterprise Linux AppStream EUS (v.9.2) libgcrypt-devel 1.10.0-10.el9_2.1, libgcrypt-debuginfo 1.10.0-10.el9_2.1, libgcrypt-debugsource 1.10.0-10.el9_2.1, libgcrypt-devel-debuginfo 1.10.0-10.el9_2.1
    fixed: vendor fix RHSA-2025:3534
  • Red Hat Enterprise Linux AppStream EUS (v.9.4) libgcrypt-devel 1.10.0-10.el9_4.1, libgcrypt-debuginfo 1.10.0-10.el9_4.1, libgcrypt-debugsource 1.10.0-10.el9_4.1, libgcrypt-devel-debuginfo 1.10.0-10.el9_4.1
    fixed: vendor fix RHSA-2025:3530
  • Red Hat Enterprise Linux BaseOS (v. 9) libgcrypt 1.10.0-11.el9
    fixed: vendor fix RHSA-2024:9404
  • Red Hat Enterprise Linux BaseOS EUS (v.9.2) libgcrypt 1.10.0-10.el9_2.1
    fixed: vendor fix RHSA-2025:3534
  • Red Hat Enterprise Linux BaseOS EUS (v.9.4) libgcrypt 1.10.0-10.el9_4.1
    fixed: vendor fix RHSA-2025:3530
show 1 more
  • Red Hat Enterprise Linux 10 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 5.9

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

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
2 y ago

Exploit prediction

1.14% chance of exploitation in the next 30 days, higher than 66% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected products

  • Red Hat Red Hat Enterprise Linux 9
  • Red Hat Red Hat Enterprise Linux 9.2 Extended Update Support
  • Red Hat Red Hat Enterprise Linux 9.4 Extended Update Support
  • Red Hat Red Hat Enterprise Linux 10
  • Red Hat Red Hat Enterprise Linux 6
  • Red Hat Red Hat Enterprise Linux 7
  • Red Hat Red Hat Enterprise Linux 8
  • 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.