CVE-2019-6454
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).
- Score
- CVSS 3.1 5.5 Medium
- Status
- Modified - cve@mitre.org
- Published
- 2019-03-21
- Last modified
- 2024-08-04
- Weaknesses
- CWE-787
Affected products
- Ubuntu Linux (Canonical)
- Debian Linux (Debian)
- Fedora (Fedoraproject)
- Web Gateway (Mcafee)
- Active Iq Performance Analytics Services (Netapp)
- Leap (Opensuse)
- Enterprise Linux (Redhat)
- Enterprise Linux Compute Node Eus (Redhat)
- Enterprise Linux Desktop (Redhat)
- Enterprise Linux Eus (Redhat)
- Enterprise Linux For Ibm Z Systems Eus (Redhat)
- Enterprise Linux For Power Big Endian Eus (Redhat)
- Enterprise Linux For Power Little Endian (Redhat)
- Enterprise Linux For Power Little Endian Eus (Redhat)
- Enterprise Linux Server (Redhat)
- Enterprise Linux Server Aus (Redhat)
- Enterprise Linux Server Eus (Redhat)
- Enterprise Linux Server For Power Little Endian Update Services For Sap Solutions (Redhat)
- Enterprise Linux Server Tus (Redhat)
- Enterprise Linux Server Update Services For Sap Solutions (Redhat)
- Enterprise Linux Workstation (Redhat)
- Systemd (Systemd Project)
References
- http://lists.opensuse.org/opensuse-security-announce/2019-02/msg00070.html
- http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00062.html
- http://www.openwall.com/lists/oss-security/2019/02/18/3
- http://www.openwall.com/lists/oss-security/2019/02/19/1
- http://www.openwall.com/lists/oss-security/2021/07/20/2
- http://www.securityfocus.com/bid/107081
- https://access.redhat.com/errata/RHSA-2019:0368
- 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
- https://kc.mcafee.com/corporate/index?page=content&id=SB10278
- https://lists.debian.org/debian-lts-announce/2019/02/msg00031.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/N67IOBOTDOMVNQJ5QRU2MX…
- https://security.netapp.com/advisory/ntap-20190327-0004/
- https://usn.ubuntu.com/3891-1/
- https://www.debian.org/security/2019/dsa-4393
