CVE-2019-6454 json
An issue was discovered in sd-bus in systemd 239.
published 2019-03-17 7 y ago modified 2026-06-17 4 mo ago also EUVD-2019-16014
- cvss
- 5.5
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 2.0%
- EPSS 2.0% chance of exploitation in 30 days, percentile 81%
- public exploits
- 0
- none known
Summary
An issue was discovered in sd-bus in systemd 239. bus_process_object() in libsystemd/sd-bus/bus-objects.c allocates a variable-length stack buffer for temporarily storing the object path of incoming D-Bus messages. An unprivileged local user can exploit this by sending a specially crafted message to PID1, causing the stack pointer to jump over the stack guard pages into an unmapped memory region and trigger a denial of service (systemd PID1 crash and kernel panic).
Patch / fix
- mcafee web_gateway 7.7.2.21, 7.8.2.8, 8.1.1
- systemd Debian 14, Debian 13, Debian 12 240-6
debian advisories DEBIAN-CVE-2019-6454
- systemd Ubuntu 16.04 LTS 229-4ubuntu21.16
- systemd Ubuntu 18.04 LTS 237-3ubuntu10.13
ubuntu advisories UBUNTU-CVE-2019-6454
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
- systemd RHEL 8 239-13.el8_0.3
- systemd-pam RHEL 8 239-13.el8_0.3
- systemd-libs RHEL 8 239-13.el8_0.3
- systemd-udev RHEL 8 239-13.el8_0.3
- systemd-tests RHEL 8 239-13.el8_0.3
- systemd-container RHEL 8 239-13.el8_0.3
- systemd-journal-remote RHEL 8 239-13.el8_0.3
- systemd RHEL 7 219-62.el7_6.5
red hat advisories RHSA-2019:2805RHSA-2019:1502RHSA-2019:1322RHSA-2019:0990RHSA-2019:0368RHSA-2019:0461
- systemd SLE Module for Basesystem 15 SP1, SLE Module for Basesystem 15 234-24.30.1
- systemd SLES for SAP 12 SP4, SLES for SAP 12 SP3, SLES for SAP 12 SP2 +10 more 228-150.66.4
- systemd SLES for SAP 12 SP4, SLES for SAP 12 SP3, SLES for SAP 12 SP2 +10 more 228-150.63.1
- systemd SLE Module for Basesystem 15 234-24.25.1
- systemd SLES for SAP 12 SP1, SLES 12 SP1-LTSS 210-116.22.1
- systemd SLES 12-LTSS 210-70.77.1
suse advisories SUSE-SU-2019:1364-2SUSE-SU-2019:1364-1SUSE-SU-2019:1265-1SUSE-SU-2019:0425-2SUSE-SU-2019:0428-1SUSE-SU-2019:0426-1
- systemd openSUSE Tumbleweed 249.4-2.2
- systemd openSUSE Leap 15.0 234-lp150.20.15.1
- systemd-mini openSUSE Leap 15.0 234-lp150.20.15.1
opensuse advisories openSUSE-SU-2024:11420-1openSUSE-SU-2019:0255-1
- systemd Arch Linux 241.7-1
arch linux advisories AVG-906
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-2019-6454 updated cvss 7.0
systemd: Insufficient input validation in bus_process_object() resulting in PID 1 crash
-
Red Hat Enterprise Linux BaseOS (v. 8) systemd 239-13.el8_0.3, systemd-pam 239-13.el8_0.3, systemd-libs 239-13.el8_0.3, systemd-udev 239-13.el8_0.3, systemd-tests 239-13.el8_0.3, systemd-container 239-13.el8_0.3, +1 morefixed: vendor fix RHSA-2019:0990
-
Red Hat Enterprise Linux Client (v. 7) systemd 219-62.el7_6.5, libgudev1 219-62.el7_6.5, systemd-libs 219-62.el7_6.5, systemd-sysv 219-62.el7_6.5, systemd-python 219-62.el7_6.5 Red Hat Enterprise Linux Client Optional (v. 7) systemd-networkd 219-62.el7_6.5, systemd-resolved 219-62.el7_6.5, systemd-journal-gateway 219-62.el7_6.5 Red Hat Enterprise Linux ComputeNode (v. 7) systemd 219-62.el7_6.5, libgudev1 219-62.el7_6.5, systemd-libs 219-62.el7_6.5, systemd-sysv 219-62.el7_6.5, systemd-python 219-62.el7_6.5fixed: vendor fix RHSA-2019:0368
-
Red Hat Enterprise Linux ComputeNode EUS (v. 7.4) systemd 219-42.el7_4.16, libgudev1 219-42.el7_4.16, systemd-libs 219-42.el7_4.16, systemd-sysv 219-42.el7_4.16, systemd-python 219-42.el7_4.16fixed: vendor fix RHSA-2019:1502
-
Red Hat Enterprise Linux ComputeNode EUS (v. 7.5) systemd 219-57.el7_5.6, libgudev1 219-57.el7_5.6, systemd-libs 219-57.el7_5.6, systemd-sysv 219-57.el7_5.6, systemd-python 219-57.el7_5.6fixed: vendor fix RHSA-2019:1322
-
Red Hat Enterprise Linux ComputeNode Optional (v. 7) systemd-networkd 219-62.el7_6.5, systemd-resolved 219-62.el7_6.5, systemd-journal-gateway 219-62.el7_6.5fixed: vendor fix RHSA-2019:0368
-
Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.4) systemd-networkd 219-42.el7_4.16, systemd-resolved 219-42.el7_4.16, systemd-journal-gateway 219-42.el7_4.16fixed: vendor fix RHSA-2019:1502
-
Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.5) systemd-networkd 219-57.el7_5.6, systemd-resolved 219-57.el7_5.6, systemd-journal-gateway 219-57.el7_5.6fixed: vendor fix RHSA-2019:1322
-
Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7) systemd 219-62.el7_6.5, libgudev1 219-62.el7_6.5, systemd-libs 219-62.el7_6.5, systemd-sysv 219-62.el7_6.5, systemd-python 219-62.el7_6.5 Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7) systemd-networkd 219-62.el7_6.5, systemd-resolved 219-62.el7_6.5, systemd-journal-gateway 219-62.el7_6.5 Red Hat Enterprise Linux Server (v. 7) systemd 219-62.el7_6.5, libgudev1 219-62.el7_6.5, systemd-libs 219-62.el7_6.5, systemd-sysv 219-62.el7_6.5, systemd-python 219-62.el7_6.5fixed: vendor fix RHSA-2019:0368
show 11 moreshow fewer
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Red Hat Enterprise Linux Server AUS (v. 7.3) systemd 219-30.el7_3.14, libgudev1 219-30.el7_3.14, systemd-libs 219-30.el7_3.14, systemd-sysv 219-30.el7_3.14, systemd-python 219-30.el7_3.14 Red Hat Enterprise Linux Server E4S (v. 7.3) systemd 219-30.el7_3.14, libgudev1 219-30.el7_3.14, systemd-libs 219-30.el7_3.14, systemd-sysv 219-30.el7_3.14, systemd-python 219-30.el7_3.14fixed: vendor fix RHSA-2019:2805
-
Red Hat Enterprise Linux Server EUS (v. 7.4) systemd 219-42.el7_4.16, libgudev1 219-42.el7_4.16, systemd-libs 219-42.el7_4.16, systemd-sysv 219-42.el7_4.16, systemd-python 219-42.el7_4.16fixed: vendor fix RHSA-2019:1502
-
Red Hat Enterprise Linux Server EUS (v. 7.5) systemd 219-57.el7_5.6, libgudev1 219-57.el7_5.6, systemd-libs 219-57.el7_5.6, systemd-sysv 219-57.el7_5.6, systemd-python 219-57.el7_5.6fixed: vendor fix RHSA-2019:1322
-
Red Hat Enterprise Linux Server Optional (v. 7) systemd-networkd 219-62.el7_6.5, systemd-resolved 219-62.el7_6.5, systemd-journal-gateway 219-62.el7_6.5fixed: vendor fix RHSA-2019:0368
-
Red Hat Enterprise Linux Server Optional AUS (v. 7.3) systemd-networkd 219-30.el7_3.14, systemd-resolved 219-30.el7_3.14, systemd-journal-gateway 219-30.el7_3.14 Red Hat Enterprise Linux Server Optional E4S (v. 7.3) systemd-networkd 219-30.el7_3.14, systemd-resolved 219-30.el7_3.14, systemd-journal-gateway 219-30.el7_3.14fixed: vendor fix RHSA-2019:2805
-
Red Hat Enterprise Linux Server Optional EUS (v. 7.4) systemd-networkd 219-42.el7_4.16, systemd-resolved 219-42.el7_4.16, systemd-journal-gateway 219-42.el7_4.16fixed: vendor fix RHSA-2019:1502
-
Red Hat Enterprise Linux Server Optional EUS (v. 7.5) systemd-networkd 219-57.el7_5.6, systemd-resolved 219-57.el7_5.6, systemd-journal-gateway 219-57.el7_5.6fixed: vendor fix RHSA-2019:1322
-
Red Hat Enterprise Linux Server Optional TUS (v. 7.3) systemd-networkd 219-30.el7_3.14, systemd-resolved 219-30.el7_3.14, systemd-journal-gateway 219-30.el7_3.14 Red Hat Enterprise Linux Server TUS (v. 7.3) systemd 219-30.el7_3.14, libgudev1 219-30.el7_3.14, systemd-libs 219-30.el7_3.14, systemd-sysv 219-30.el7_3.14, systemd-python 219-30.el7_3.14fixed: vendor fix RHSA-2019:2805
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Red Hat Enterprise Linux Workstation (v. 7) systemd 219-62.el7_6.5, libgudev1 219-62.el7_6.5, systemd-libs 219-62.el7_6.5, systemd-sysv 219-62.el7_6.5, systemd-python 219-62.el7_6.5 Red Hat Enterprise Linux Workstation Optional (v. 7) systemd-networkd 219-62.el7_6.5, systemd-resolved 219-62.el7_6.5, systemd-journal-gateway 219-62.el7_6.5fixed: vendor fix RHSA-2019:0368
-
Red Hat Virtualization 4 Hypervisor for RHEL 7 rhvm-appliance 4.2-20190224.0.el7, redhat-virtualization-host 4.2-20190219.0.el7_6, redhat-virtualization-host-image-update 4.2-20190219.0.el7_6 Red Hat Virtualization 4 Management Agent for RHEL 7 Hosts rhvm-appliance 4.2-20190224.0.el7fixed: vendor fix RHSA-2019:0461
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Red Hat RHEL 7-based RHEV-H for RHEV 4 (build requirements) redhat-release-virtualization-host 4.2-8.3.el7, redhat-virtualization-host-image-update-placeholder 4.2-8.3.el7fixed: vendor fix RHSA-2019:0457
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
Exploit prediction
2.04% chance of exploitation in the next 30 days, higher than 81% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- openwall.com http://www.openwall.com/lists/oss-security/2021/07/20/2 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
| NVD | 2.0 | 4.9 | AV:L/AC:L/Au:N/C:N/I:N/A:C |
Classification
- Weakness
-
- CWE-787 Out-of-bounds Write
References
-
openwall.com
/lists/oss-security/2019/02/18/3
mailing-list, patch, third-party-advisory
-
github.com
/systemd/systemd/commits/master/src/libsystemd/sd-bus/bus-objects.c
patch, third-party-advisory
-
kc.mcafee.com
/corporate/index?page=content&id=SB10278
patch, third-party-advisory
-
openwall.com
/lists/oss-security/2021/07/20/2
mailing-list, exploit, third-party-advisory
-
lists.fedoraproject.org
/archives/list/package-announce%40lists.fedoraproject.org/message/N67IOBOTDOMVNQJ5QRU2MXLEECXPGNVJ/
vendor-advisory
-
usn.ubuntu.com
/3891-1/
vendor-advisory, third-party-advisory
-
access.redhat.com
/errata/RHSA-2019:0368
vendor-advisory, third-party-advisory
-
lists.opensuse.org
/opensuse-security-announce/2019-02/msg00070.html
vendor-advisory, third-party-advisory
-
debian.org
/security/2019/dsa-4393
vendor-advisory, third-party-advisory
-
access.redhat.com
/errata/RHSA-2019:0990
vendor-advisory, third-party-advisory
-
lists.opensuse.org
/opensuse-security-announce/2019-05/msg00062.html
vendor-advisory, mailing-list, third-party-advisory
-
access.redhat.com
/errata/RHSA-2019:1322
vendor-advisory, third-party-advisory
-
access.redhat.com
/errata/RHSA-2019:1502
vendor-advisory, third-party-advisory
-
access.redhat.com
/errata/RHSA-2019:2805
vendor-advisory, third-party-advisory
-
securityfocus.com
/bid/107081
vdb-entry, third-party-advisory
-
openwall.com
/lists/oss-security/2019/02/19/1
mailing-list, third-party-advisory
-
lists.debian.org
/debian-lts-announce/2019/02/msg00031.html
mailing-list, third-party-advisory
-
security.netapp.com
/advisory/ntap-20190327-0004/
third-party-advisory
Sources
- CVE List CVE-2019-6454
- NVD CVE-2019-6454
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.