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Fencer Vulns
high 7.5

CVE-2024-37370 json

In MIT Kerberos 5 (aka krb5) before 1.21.3, an attacker can modify the plaintext Extra Count field of a confidential GSS krb5 wrap token, c…

published 2024-06-28 2 y ago modified 2026-10-15 25 d ago also EUVD-2024-36618 , JLSEC-2026-93

cvss
7.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.7%
EPSS 0.7% chance of exploitation in 30 days, percentile 55%
public exploits
0
none known

Summary

In MIT Kerberos 5 (aka krb5) before 1.21.3, an attacker can modify the plaintext Extra Count field of a confidential GSS krb5 wrap token, causing the unwrapped token to appear truncated to the application.

Patch / fix

  • julia Kerberos_krb5_jll 1.21.3+0
  • mit kerberos_5 1.21.3
  • mit krb5 1.21.3
  • oracle mysql 8.0.40, 8.4.3, 9.1.0
  • oracle mysql_server 8.0.40, 8.4.3, 9.1.0
  • krb5 Debian 12 1.20.1-2+deb12u2
  • krb5 Debian 14, Debian 13 1.21.3-1

debian advisories DEBIAN-CVE-2024-37370

  • krb5 Ubuntu 20.04 LTS 1.17-6ubuntu4.6
  • krb5 Ubuntu 22.04 LTS 1.19.2-2ubuntu0.4
  • krb5 Ubuntu 24.04 LTS 1.20.1-6ubuntu2.1
  • krb5 Ubuntu Pro 14.04 LTS 1.12+dfsg-2ubuntu5.4+esm5
  • krb5 Ubuntu Pro 16.04 LTS 1.13.2+dfsg-5ubuntu2.2+esm5
  • krb5 Ubuntu Pro 18.04 LTS 1.16-2ubuntu0.4+esm2

ubuntu advisories UBUNTU-CVE-2024-37370

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

  • krb5 RHEL 9 1.21.1-2.el9_4
  • libkadm5 RHEL 9 1.21.1-2.el9_4
  • krb5-libs RHEL 9 1.21.1-2.el9_4
  • krb5-pkinit RHEL 9 1.21.1-2.el9_4
  • krb5-server RHEL 9 1.21.1-2.el9_4
  • krb5-server-ldap RHEL 9 1.21.1-2.el9_4
  • krb5-workstation RHEL 9 1.21.1-2.el9_4
  • krb5 RHEL 8 1.18.2-29.el8_10

red hat advisories RHSA-2024:6166RHSA-2024:5884RHSA-2024:5630RHSA-2024:5643RHSA-2024:5625RHSA-2024:5316

  • krb5 Linux Micro 6.0 1.20.1-5.1
  • krb5 SLES for SAP 15 SP4, SLES 15 SP4-LTSS, SLE Micro 5.4 +5 more 1.19.2-150400.3.12.1
  • krb5 SLE Module for Server Applications 15 SP6, SLE Module for Basesystem 15 SP6, openSUSE Leap 15.6 1.20.1-150600.11.3.1
  • krb5 SLES for SAP 15 SP3, SLES 15 SP3-LTSS, SLE Micro 5.2 +3 more 1.19.2-150300.19.1
  • krb5 SLE Module for Server Applications 15 SP5, SLE Module for Basesystem 15 SP5, SLE Micro 5.5 +1 more 1.20.1-150500.3.9.1
  • krb5 SLES for SAP 12 SP5, SLES 12 SP5, SLE Software Development Kit 12 SP5 1.16.3-46.15.1
  • krb5 SLES for SAP 15 SP2, SLES 15 SP2-LTSS, SLE High Performance Computing 15 SP2-LTSS 1.16.3-150100.3.36.1

suse advisories SUSE-SU-2025:20051-1SUSE-SU-2024:2322-1SUSE-SU-2024:2307-1SUSE-SU-2024:2305-1SUSE-SU-2024:2303-1SUSE-SU-2024:2302-1

  • krb5 openSUSE Tumbleweed 1.21.3-1.1

opensuse advisories openSUSE-SU-2024:14111-1

  • libkadm5 AlmaLinux 9 1.21.1-2.el9_4
  • krb5-libs AlmaLinux 9 1.21.1-2.el9_4
  • krb5-pkinit AlmaLinux 9 1.21.1-2.el9_4
  • krb5-server AlmaLinux 9 1.21.1-2.el9_4
  • krb5-server-ldap AlmaLinux 9 1.21.1-2.el9_4
  • krb5-workstation AlmaLinux 9 1.21.1-2.el9_4
  • libkadm5 AlmaLinux 8 1.18.2-29.el8_10
  • krb5-libs AlmaLinux 8 1.18.2-29.el8_10

almalinux advisories ALSA-2024:6166ALSA-2024:5312

  • krb5 Rocky Linux 8 1.18.2-29.el8_10

rocky linux advisories RLSA-2024:5312

  • krb5 Alpine 3.18, Alpine 3.17 1.20.2-r1
  • krb5 Alpine 3.24, Alpine 3.23, Alpine 3.22 +3 more 1.20.3-r0

alpine advisories ALPINE-CVE-2024-37370

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

  • krb5 CBL-Mariner 2.0 1.19.4-3
  • krb5 Azure Linux 3.0 1.21.3-1

azure linux advisories AZL-42991AZL-43002

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

  • krb5 Arch Linux 1.21.3-1

arch linux advisories AVG-2856

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-2024-37370 updated cvss 7.5

krb5: GSS message token handling

  • Red Hat Ansible Automation Platform 2 ansible-automation-platform-25/ansible-dev-tools-rhel8
    affected: workaround, no fix available
  • Red Hat Enterprise Linux 6 krb5, libkadm5, krb5-libs, krb5-server, krb5-server-ldap, krb5-workstation, +1 more
    affected: workaround, no fix planned “Out of support scope”
  • Red Hat Enterprise Linux AppStream (v. 9) ubi9/toolbox 9.4-12.1725906880, rhel9/toolbox 9.4-12.1725906880
    fixed: vendor fix RHSA-2024:6166
  • Red Hat Enterprise Linux AppStream E4S (v.9.0) krb5-devel 1.19.1-16.el9_0.1, krb5-debuginfo 1.19.1-16.el9_0.1, krb5-debugsource 1.19.1-16.el9_0.1, libkadm5-debuginfo 1.19.1-16.el9_0.1, krb5-libs-debuginfo 1.19.1-16.el9_0.1, krb5-pkinit-debuginfo 1.19.1-16.el9_0.1, +3 more
    fixed: vendor fix RHSA-2024:5630
  • Red Hat Enterprise Linux AppStream EUS (v.9.2) krb5-devel 1.20.1-9.el9_2.1
    fixed: vendor fix RHSA-2024:5643
  • Red Hat Enterprise Linux BaseOS (v. 8) krb5 1.18.2-29.el8_10, libkadm5 1.18.2-29.el8_10, krb5-libs 1.18.2-29.el8_10, krb5-pkinit 1.18.2-29.el8_10, krb5-server 1.18.2-29.el8_10, krb5-server-ldap 1.18.2-29.el8_10, +1 more
    fixed: vendor fix RHSA-2024:5312
  • Red Hat Enterprise Linux BaseOS (v. 9) krb5 1.21.1-2.el9_4, libkadm5 1.21.1-2.el9_4, krb5-libs 1.21.1-2.el9_4, krb5-pkinit 1.21.1-2.el9_4, krb5-server 1.21.1-2.el9_4, krb5-server-ldap 1.21.1-2.el9_4, +1 more
    fixed: vendor fix RHSA-2024:6166
  • Red Hat Enterprise Linux BaseOS AUS (v. 8.2) krb5 1.17-19.el8_2.1, libkadm5 1.17-19.el8_2.1, krb5-libs 1.17-19.el8_2.1, krb5-pkinit 1.17-19.el8_2.1, krb5-server 1.17-19.el8_2.1, krb5-server-ldap 1.17-19.el8_2.1, +1 more
    fixed: vendor fix RHSA-2024:5884
show 14 more
  • Red Hat Enterprise Linux BaseOS AUS (v.8.4) krb5 1.18.2-9.el8_4.1, libkadm5 1.18.2-9.el8_4.1, krb5-libs 1.18.2-9.el8_4.1, krb5-pkinit 1.18.2-9.el8_4.1, krb5-server 1.18.2-9.el8_4.1, krb5-server-ldap 1.18.2-9.el8_4.1, +1 more
    fixed: vendor fix RHSA-2024:4734
  • Red Hat Enterprise Linux BaseOS AUS (v.8.6) krb5 1.18.2-16.el8_6.1, libkadm5 1.18.2-16.el8_6.1, krb5-libs 1.18.2-16.el8_6.1, krb5-pkinit 1.18.2-16.el8_6.1, krb5-server 1.18.2-16.el8_6.1, krb5-server-ldap 1.18.2-16.el8_6.1, +1 more
    fixed: vendor fix RHSA-2024:5625
  • Red Hat Enterprise Linux BaseOS E4S (v.8.4) krb5 1.18.2-9.el8_4.1, libkadm5 1.18.2-9.el8_4.1, krb5-libs 1.18.2-9.el8_4.1, krb5-pkinit 1.18.2-9.el8_4.1, krb5-server 1.18.2-9.el8_4.1, krb5-server-ldap 1.18.2-9.el8_4.1, +1 more
    fixed: vendor fix RHSA-2024:4734
  • Red Hat Enterprise Linux BaseOS E4S (v.8.6) krb5 1.18.2-16.el8_6.1, libkadm5 1.18.2-16.el8_6.1, krb5-libs 1.18.2-16.el8_6.1, krb5-pkinit 1.18.2-16.el8_6.1, krb5-server 1.18.2-16.el8_6.1, krb5-server-ldap 1.18.2-16.el8_6.1, +1 more
    fixed: vendor fix RHSA-2024:5625
  • Red Hat Enterprise Linux BaseOS E4S (v.9.0) krb5 1.19.1-16.el9_0.1, libkadm5 1.19.1-16.el9_0.1, krb5-libs 1.19.1-16.el9_0.1, krb5-pkinit 1.19.1-16.el9_0.1, krb5-server 1.19.1-16.el9_0.1, krb5-server-ldap 1.19.1-16.el9_0.1, +1 more
    fixed: vendor fix RHSA-2024:5630
  • Red Hat Enterprise Linux BaseOS EUS (v.8.8) krb5 1.18.2-26.el8_8.2, libkadm5 1.18.2-26.el8_8.2, krb5-libs 1.18.2-26.el8_8.2, krb5-pkinit 1.18.2-26.el8_8.2, krb5-server 1.18.2-26.el8_8.2, krb5-server-ldap 1.18.2-26.el8_8.2, +1 more
    fixed: vendor fix RHSA-2024:4743
  • Red Hat Enterprise Linux BaseOS EUS (v.9.2) krb5 1.20.1-9.el9_2.1, libkadm5 1.20.1-9.el9_2.1, krb5-libs 1.20.1-9.el9_2.1, krb5-pkinit 1.20.1-9.el9_2.1, krb5-server 1.20.1-9.el9_2.1, krb5-server-ldap 1.20.1-9.el9_2.1, +1 more
    fixed: vendor fix RHSA-2024:5643
  • Red Hat Enterprise Linux BaseOS TUS (v.8.4) krb5 1.18.2-9.el8_4.1, libkadm5 1.18.2-9.el8_4.1, krb5-libs 1.18.2-9.el8_4.1, krb5-pkinit 1.18.2-9.el8_4.1, krb5-server 1.18.2-9.el8_4.1, krb5-server-ldap 1.18.2-9.el8_4.1, +1 more
    fixed: vendor fix RHSA-2024:4734
  • Red Hat Enterprise Linux BaseOS TUS (v.8.6) krb5 1.18.2-16.el8_6.1, libkadm5 1.18.2-16.el8_6.1, krb5-libs 1.18.2-16.el8_6.1, krb5-pkinit 1.18.2-16.el8_6.1, krb5-server 1.18.2-16.el8_6.1, krb5-server-ldap 1.18.2-16.el8_6.1, +1 more
    fixed: vendor fix RHSA-2024:5625
  • Red Hat Enterprise Linux Server (v. 7 ELS) krb5 1.15.1-55.el7_9.2, libkadm5 1.15.1-55.el7_9.2, krb5-libs 1.15.1-55.el7_9.2, krb5-pkinit 1.15.1-55.el7_9.2, krb5-server 1.15.1-55.el7_9.2, krb5-server-ldap 1.15.1-55.el7_9.2, +1 more
    fixed: vendor fix RHSA-2024:5076
  • Red Hat Enterprise Linux Server AUS (v. 7.7) krb5 1.15.1-37.el7_7.4, libkadm5 1.15.1-37.el7_7.4, krb5-libs 1.15.1-37.el7_7.4, krb5-pkinit 1.15.1-37.el7_7.4, krb5-server 1.15.1-37.el7_7.4, krb5-server-ldap 1.15.1-37.el7_7.4, +1 more
    fixed: vendor fix RHSA-2024:5316
  • Red Hat Service Interconnect 1 service-interconnect/skupper-router-rhel9 2.5.3-5, service-interconnect/skupper-router-rhel9 2.5.3-6, service-interconnect/skupper-operator-bundle 1.5.5-3, service-interconnect/skupper-operator-bundle 1.5.5-4, service-interconnect/skupper-config-sync-rhel9 1.5.5-3, service-interconnect/skupper-config-sync-rhel9 1.5.5-4, +10 more
    fixed: vendor fix RHSA-2024:11109
  • Red Hat Service Interconnect 1.4 service-interconnect/skupper-router-rhel9 2.4.3-6, service-interconnect/skupper-router-rhel9 2.4.3-7, service-interconnect/skupper-operator-bundle 1.4.7-2, service-interconnect/skupper-operator-bundle 1.4.7-4, service-interconnect/skupper-config-sync-rhel9 1.4.7-2, service-interconnect/skupper-config-sync-rhel9 1.4.7-3, +6 more
    fixed: vendor fix RHSA-2024:7213
  • Red Hat Ansible Automation Platform 2 aap-cloud-metrics-collector-container, ansible-automation-platform-25/ee-minimal-rhel8, ansible-automation-platform-24/de-supported-rhel8, ansible-automation-platform-24/ee-supported-rhel9, ansible-automation-platform-25/ansible-builder-rhel8, ansible-automation-platform-25/ee-cloud-services-rhel9, +2 more Red Hat Enterprise Linux 10 krb5 Red Hat Enterprise Linux BaseOS E4S (v.8.6) libkadm5 1.18.2-16.el8_6.1, krb5-libs 1.18.2-16.el8_6.1, krb5-pkinit 1.18.2-16.el8_6.1, krb5-server 1.18.2-16.el8_6.1, krb5-server-ldap 1.18.2-16.el8_6.1, krb5-workstation 1.18.2-16.el8_6.1
    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-25-162-05 updated cvss 7.4

Siemens SIMATIC S7-1500 CPU family

  • Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0) >= 3.1.5 Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AC0) >= 3.1.5 Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AB0) >= 3.1.5 Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AC0) >= 3.1.5 Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP (6AG1518-4AX00-4AC0) >= 3.1.5
    affected: mitigation, no fix available

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
partial
Assessed
2 y ago

Exploit prediction

0.75% chance of exploitation in the next 30 days, higher than 55% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CISA ADP 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CNA 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
OSV 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected packages

ecosystem package affected fixed in
julia Kerberos_krb5_jll
<1.21.3+0
1.21.3+0

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
  • CWE-345 Insufficient Verification of Data Authenticity
Technology feeds

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.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.