SUSE update for dbus-1

1) Memory leak

EUVDB-ID: #VU29105

Risk: Low

CVSSv4.0: 1.1 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2020-12049

CWE-ID: CWE-401 - Missing release of memory after effective lifetime

Exploit availability: No

Description

The vulnerability allows a local user to perform DoS attack on the target system.

The vulnerability exists due memory leak in libdbus when a message exceeds the per-message file descriptor limit. A local user with access to the D-Bus system bus or another system service's private AF_UNIX socket can make the system service reach its file descriptor limit, denying service to subsequent D-Bus clients.

Mitigation

Update the affected package dbus-1 to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Server for SAP: 15

SUSE Linux Enterprise High Performance Computing: 15-ESPOS - 15-LTSS

SUSE Linux Enterprise Server: 15-LTSS

libdbus-1-3-32bit-debuginfo: before 1.12.2-3.16.1

libdbus-1-3-32bit: before 1.12.2-3.16.1

dbus-1-32bit-debuginfo: before 1.12.2-3.16.1

libdbus-1-3-debuginfo: before 1.12.2-3.16.1

libdbus-1-3: before 1.12.2-3.16.1

dbus-1-x11-debugsource: before 1.12.2-3.16.1

dbus-1-x11-debuginfo: before 1.12.2-3.16.1

dbus-1-x11: before 1.12.2-3.16.1

dbus-1-devel: before 1.12.2-3.16.1

dbus-1-debugsource: before 1.12.2-3.16.1

dbus-1-debuginfo: before 1.12.2-3.16.1

dbus-1: before 1.12.2-3.16.1

CPE2.3

• cpe:2.3:o:suse:suse_linux_enterprise_server_for_sap:15:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_linux_enterprise_high_performance_computing:15-ESPOS:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_linux_enterprise_high_performance_computing:15-LTSS:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_linux_enterprise_server:15-LTSS:*:*:*:*:*:*:*
• cpe:2.3:a:suse:libdbus-1-3-32bit-debuginfo:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:libdbus-1-3-32bit:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:dbus-1-32bit-debuginfo:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:libdbus-1-3-debuginfo:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:libdbus-1-3:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:dbus-1-x11-debugsource:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:dbus-1-x11-debuginfo:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:dbus-1-x11:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:dbus-1-devel:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:dbus-1-debugsource:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:dbus-1-debuginfo:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:dbus-1:*:*:*:*:*:suse_linux:*:*

External links

https://www.suse.com/support/update/announcement/2021/suse-su-20212470-1/

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.