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Vulnerability details: VCID-v5fj-wrys-k7b6
Vulnerability ID VCID-v5fj-wrys-k7b6
Aliases CVE-2020-12049
Summary An issue was discovered in dbus >= 1.3.0 before 1.12.18. The DBusServer in libdbus, as used in dbus-daemon, leaks file descriptors when a message exceeds the per-message file descriptor limit. A local attacker with access to the D-Bus system bus or another system service's private AF_UNIX socket could use this to make the system service reach its file descriptor limit, denying service to subsequent D-Bus clients.
Status Published
Exploitability 0.5
Weighted Severity 5.9
Risk 3.0
Affected and Fixed Packages Package Details
Weaknesses (2)
CWE-404 Improper Resource Shutdown or Release
CWE-400 Uncontrolled Resource Consumption
System Score Found at
cvssv3 6.5 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2020-12049.json
epss 0.00022 https://api.first.org/data/v1/epss?cve=CVE-2020-12049
epss 0.00022 https://api.first.org/data/v1/epss?cve=CVE-2020-12049
epss 0.00022 https://api.first.org/data/v1/epss?cve=CVE-2020-12049
epss 0.00022 https://api.first.org/data/v1/epss?cve=CVE-2020-12049
epss 0.00022 https://api.first.org/data/v1/epss?cve=CVE-2020-12049
epss 0.00022 https://api.first.org/data/v1/epss?cve=CVE-2020-12049
epss 0.00022 https://api.first.org/data/v1/epss?cve=CVE-2020-12049
epss 0.00022 https://api.first.org/data/v1/epss?cve=CVE-2020-12049
epss 0.00022 https://api.first.org/data/v1/epss?cve=CVE-2020-12049
epss 0.00022 https://api.first.org/data/v1/epss?cve=CVE-2020-12049
epss 0.00022 https://api.first.org/data/v1/epss?cve=CVE-2020-12049
epss 0.00022 https://api.first.org/data/v1/epss?cve=CVE-2020-12049
epss 0.00022 https://api.first.org/data/v1/epss?cve=CVE-2020-12049
epss 0.00022 https://api.first.org/data/v1/epss?cve=CVE-2020-12049
epss 0.00022 https://api.first.org/data/v1/epss?cve=CVE-2020-12049
epss 0.00022 https://api.first.org/data/v1/epss?cve=CVE-2020-12049
epss 0.00022 https://api.first.org/data/v1/epss?cve=CVE-2020-12049
epss 0.00022 https://api.first.org/data/v1/epss?cve=CVE-2020-12049
epss 0.00022 https://api.first.org/data/v1/epss?cve=CVE-2020-12049
epss 0.00023 https://api.first.org/data/v1/epss?cve=CVE-2020-12049
epss 0.00023 https://api.first.org/data/v1/epss?cve=CVE-2020-12049
epss 0.00023 https://api.first.org/data/v1/epss?cve=CVE-2020-12049
epss 0.00023 https://api.first.org/data/v1/epss?cve=CVE-2020-12049
epss 0.00023 https://api.first.org/data/v1/epss?cve=CVE-2020-12049
epss 0.00023 https://api.first.org/data/v1/epss?cve=CVE-2020-12049
epss 0.00023 https://api.first.org/data/v1/epss?cve=CVE-2020-12049
epss 0.00023 https://api.first.org/data/v1/epss?cve=CVE-2020-12049
epss 0.00023 https://api.first.org/data/v1/epss?cve=CVE-2020-12049
epss 0.00023 https://api.first.org/data/v1/epss?cve=CVE-2020-12049
cvssv3.1 5.5 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv2 4.9 https://nvd.nist.gov/vuln/detail/CVE-2020-12049
cvssv3.1 5.5 https://nvd.nist.gov/vuln/detail/CVE-2020-12049
archlinux Low https://security.archlinux.org/AVG-1183
Reference id Reference type URL
http://packetstormsecurity.com/files/172840/D-Bus-File-Descriptor-Leak-Denial-Of-Service.html
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2020-12049.json
https://api.first.org/data/v1/epss?cve=CVE-2020-12049
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-12049
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
https://gitlab.freedesktop.org/dbus/dbus/-/issues/294
https://gitlab.freedesktop.org/dbus/dbus/-/tags/dbus-1.10.30
https://gitlab.freedesktop.org/dbus/dbus/-/tags/dbus-1.12.18
https://gitlab.freedesktop.org/dbus/dbus/-/tags/dbus-1.13.16
https://security.gentoo.org/glsa/202007-46
https://securitylab.github.com/advisories/GHSL-2020-057-DBus-DoS-file-descriptor-leak
http://www.openwall.com/lists/oss-security/2020/06/04/3
1849041 https://bugzilla.redhat.com/show_bug.cgi?id=1849041
ASA-202006-9 https://security.archlinux.org/ASA-202006-9
AVG-1183 https://security.archlinux.org/AVG-1183
cpe:2.3:a:freedesktop:dbus:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:freedesktop:dbus:*:*:*:*:*:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:*:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:19.10:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:canonical:ubuntu_linux:19.10:*:*:*:*:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:*
CVE-2020-12049 https://nvd.nist.gov/vuln/detail/CVE-2020-12049
RHSA-2020:2894 https://access.redhat.com/errata/RHSA-2020:2894
RHSA-2020:3014 https://access.redhat.com/errata/RHSA-2020:3014
RHSA-2020:3044 https://access.redhat.com/errata/RHSA-2020:3044
RHSA-2020:3298 https://access.redhat.com/errata/RHSA-2020:3298
USN-4398-1 https://usn.ubuntu.com/4398-1/
USN-4398-2 https://usn.ubuntu.com/4398-2/
No exploits are available.
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2020-12049.json
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Found at https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: AV:L/AC:L/Au:N/C:N/I:N/A:C Found at https://nvd.nist.gov/vuln/detail/CVE-2020-12049
Exploitability (E) Access Vector (AV) Access Complexity (AC) Authentication (Au) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

high

functional

unproven

proof_of_concept

not_defined

local

adjacent_network

network

high

medium

low

multiple

single

none

none

partial

complete

none

partial

complete

none

partial

complete
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2020-12049
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Exploit Prediction Scoring System (EPSS)
Percentile 0.04086
EPSS Score 0.00022
Published At July 30, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-07-31T08:31:23.212100+00:00 Alpine Linux Importer Import https://secdb.alpinelinux.org/v3.16/main.json 37.0.0