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CVE-2019-6454

MEDIUM
5.5
CVSS Score
Published: March 17, 2019 at 04:38 PM UTC
Updated: June 17, 2026 at 02:39 AM UTC
22 products affected across 8 vendorsDebian LinuxFedoraUbuntu Linux

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Severity
MEDIUM5.5
Exploit prediction
EPSS 2%

Description

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).

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Ubuntu Linux· Canonicalrubygems
95%
16.0418.0418.10
Debian Linux· Debiandrupal
95%
8.09.0
Fedora· Fedora Projectrpm
95%
29
Web Gateway· McAfee
95%
v < 7.7.2.217.8.0 ≤ v < 7.8.2.88.0.0 ≤ v < 8.1.1
Affected range stops below 7.7.2.21, so it looks safe — our inference, not a vendor statement
Affected range stops below 7.8.2.8, so it looks safe — our inference, not a vendor statement
Affected range stops below 8.1.1, so it looks safe — our inference, not a vendor statement
Active Iq Performance Analytics Services· NetApp
95%
All versions
Leap· openSUSEdrupal
95%
15.0
Enterprise Linux· Red Hatrpm
95%
8.0
Enterprise Linux Compute Node Eus· Red Hat
95%
7.5
Enterprise Linux Desktop· Red Hatrubygems
95%
7.0
Enterprise Linux Eus· Red Hatrpm
95%
7.47.58.18.28.4

References (18)

Vendor Advisoryx_refsource_SUSEThird Party Advisory
Source: [email protected]
http://lists.opensuse.org/opensuse-security-announce/2019-02/msg00070.html
Vendor Advisoryx_refsource_SUSEMailing ListThird Party Advisory
Source: [email protected]
http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00062.html
Mailing Listx_refsource_MLISTPatchThird Party Advisory
Source: [email protected]
http://www.openwall.com/lists/oss-security/2019/02/18/3
Mailing Listx_refsource_MLISTThird Party Advisory
Source: [email protected]
http://www.openwall.com/lists/oss-security/2019/02/19/1
Mailing Listx_refsource_MLISTExploitThird Party Advisory
Source: [email protected]
http://www.openwall.com/lists/oss-security/2021/07/20/2
VDB Entryx_refsource_BIDThird Party Advisory
Source: [email protected]
http://www.securityfocus.com/bid/107081
Vendor Advisoryx_refsource_REDHATThird Party Advisory
Source: [email protected]
https://access.redhat.com/errata/RHSA-2019:0368
Vendor Advisoryx_refsource_REDHATThird Party Advisory
Source: [email protected]
https://access.redhat.com/errata/RHSA-2019:0990

CVSS

5.5MEDIUM[email protected]
Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-787

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