CVE-2019-6454 Detail

Current 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).


View Analysis Description

Severity



CVSS 3.x Severity and Metrics:

NIST CVSS score
NIST: NVD
Base Score:  5.5 MEDIUM
Vector:  CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H


NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.

Note: NVD Analysts have published a CVSS score for this CVE based on publicly available information at the time of analysis. The CNA has not provided a score within the CVE List.

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://lists.opensuse.org/opensuse-security-announce/2019-02/msg00070.html Third Party Advisory 
http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00062.html
http://www.openwall.com/lists/oss-security/2019/02/18/3 Mailing List  Patch  Third Party Advisory 
http://www.openwall.com/lists/oss-security/2019/02/19/1 Mailing List  Third Party Advisory 
http://www.securityfocus.com/bid/107081 Third Party Advisory  VDB Entry 
https://access.redhat.com/errata/RHSA-2019:0368 Third Party Advisory 
https://access.redhat.com/errata/RHSA-2019:0990
https://access.redhat.com/errata/RHSA-2019:1322
https://access.redhat.com/errata/RHSA-2019:1502
https://access.redhat.com/errata/RHSA-2019:2805
https://github.com/systemd/systemd/commits/master/src/libsystemd/sd-bus/bus-objects.c Patch  Third Party Advisory 
https://kc.mcafee.com/corporate/index?page=content&id=SB10278
https://lists.debian.org/debian-lts-announce/2019/02/msg00031.html Mailing List  Third Party Advisory 
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/N67IOBOTDOMVNQJ5QRU2MXLEECXPGNVJ/ Third Party Advisory 
https://security.netapp.com/advisory/ntap-20190327-0004/ Third Party Advisory 
https://usn.ubuntu.com/3891-1/ Third Party Advisory 
https://www.debian.org/security/2019/dsa-4393 Third Party Advisory 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer cwe source acceptance level NIST  

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Change History

8 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2019-6454
NVD Published Date:
03/21/2019
NVD Last Modified:
06/04/2019
Source:
MITRE