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Vulnerability details: VCID-vqkm-aqvg-aaaj
Vulnerability ID VCID-vqkm-aqvg-aaaj
Aliases CVE-2020-35512
Summary A use-after-free flaw was found in D-Bus Development branch <= 1.13.16, dbus-1.12.x stable branch <= 1.12.18, and dbus-1.10.x and older branches <= 1.10.30 when a system has multiple usernames sharing the same UID. When a set of policy rules references these usernames, D-Bus may free some memory in the heap, which is still used by data structures necessary for the other usernames sharing the UID, possibly leading to a crash or other undefined behaviors
Status Published
Exploitability 0.5
Weighted Severity 7.0
Risk 3.5
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-416 Use After Free
System Score Found at
cvssv3 7.0 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2020-35512.json
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epss 0.00042 https://api.first.org/data/v1/epss?cve=CVE-2020-35512
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epss 0.00042 https://api.first.org/data/v1/epss?cve=CVE-2020-35512
epss 0.00042 https://api.first.org/data/v1/epss?cve=CVE-2020-35512
epss 0.00042 https://api.first.org/data/v1/epss?cve=CVE-2020-35512
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epss 0.00042 https://api.first.org/data/v1/epss?cve=CVE-2020-35512
ssvc Track https://bugs.gentoo.org/755392
rhbs low https://bugzilla.redhat.com/show_bug.cgi?id=1909101
ssvc Track https://bugzilla.redhat.com/show_bug.cgi?id=1909101
cvssv3.1 7 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
ssvc Track https://gitlab.freedesktop.org/dbus/dbus/-/issues/305#note_829128
cvssv2 7.2 https://nvd.nist.gov/vuln/detail/CVE-2020-35512
cvssv3 7.8 https://nvd.nist.gov/vuln/detail/CVE-2020-35512
cvssv3.1 7.8 https://nvd.nist.gov/vuln/detail/CVE-2020-35512
archlinux Medium https://security.archlinux.org/AVG-1573
ssvc Track https://security-tracker.debian.org/tracker/CVE-2020-35512
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2020-35512.json
https://api.first.org/data/v1/epss?cve=CVE-2020-35512
https://bugs.gentoo.org/755392
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-35512
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
https://gitlab.freedesktop.org/dbus/dbus/-/issues/305#note_829128
https://security-tracker.debian.org/tracker/CVE-2020-35512
1909101 https://bugzilla.redhat.com/show_bug.cgi?id=1909101
AVG-1573 https://security.archlinux.org/AVG-1573
CVE-2020-35512 https://nvd.nist.gov/vuln/detail/CVE-2020-35512
USN-5244-1 https://usn.ubuntu.com/5244-1/
USN-5244-2 https://usn.ubuntu.com/5244-2/
No exploits are available.
Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2020-35512.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: SSVCv2/E:N/A:N/T:T/P:M/B:A/M:M/D:T/2024-11-19T15:31:25Z/ Found at https://bugs.gentoo.org/755392
Vector: SSVCv2/E:N/A:N/T:T/P:M/B:A/M:M/D:T/2024-11-19T15:31:25Z/ Found at https://bugzilla.redhat.com/show_bug.cgi?id=1909101
Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/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: SSVCv2/E:N/A:N/T:T/P:M/B:A/M:M/D:T/2024-11-19T15:31:25Z/ Found at https://gitlab.freedesktop.org/dbus/dbus/-/issues/305#note_829128
Vector: AV:L/AC:L/Au:N/C:C/I:C/A:C Found at https://nvd.nist.gov/vuln/detail/CVE-2020-35512
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:H/I:H/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2020-35512
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:H/I:H/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2020-35512
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: SSVCv2/E:N/A:N/T:T/P:M/B:A/M:M/D:T/2024-11-19T15:31:25Z/ Found at https://security-tracker.debian.org/tracker/CVE-2020-35512
Exploit Prediction Scoring System (EPSS)
Percentile 0.02133
EPSS Score 0.00017
Published At March 28, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
There are no relevant records.