CVE-2020-35512
published 2021-02-15CVE-2020-35512: 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…
PriorityP339high7.8CVSS 3.1
AVLACLPRLUINSUCHIHAH
EPSS
0.33%
25.3th percentile
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
Affected
6 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | dbus | < dbus 1.12.20-1 (bookworm) | dbus 1.12.20-1 (bookworm) |
| freedesktop | dbus | — | — |
| freedesktop | dbus | >= 0 < 1.12.20-1 | 1.12.20-1 |
| freedesktop | dbus | >= 0 < 1.12.20-1 | 1.12.20-1 |
| freedesktop | dbus | >= 0 < 1.12.20-1 | 1.12.20-1 |
| freedesktop | dbus | >= 0 < 1.12.20-1 | 1.12.20-1 |
CVSS provenance
nvdv3.17.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
nvdv2.07.2HIGHAV:L/AC:L/Au:N/C:C/I:C/A:C
osv7.8HIGH
vendor_debian7.8HIGH
vendor_redhat7.8HIGH
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Ubuntu
DBus vulnerability
vendor_ubuntu·2022-05-09
CVE-2020-35512 DBus vulnerability
Title: DBus vulnerability
Summary: DBus could be made to crash if it received specially crafted
input.
USN-5244-1 fixed a vulnerability in DBus. This update provides
the corresponding update for Ubuntu 18.04 LTS and Ubuntu 20.04 LTS.
Original advisory details:
Daniel Onaca discovered that DBus contained a use-after-free vulnerability,
caused by the incorrect handling of usernames sharing the same UID. An
attacker could possibly use this issue to cause DBus to crash, resulting
in a denial of service.
Instructions: After a standard system update you need to reboot your computer to make
all the necessary changes.
Ubuntu
DBus vulnerability
vendor_ubuntu·2022-01-20
CVE-2020-35512 DBus vulnerability
Title: DBus vulnerability
Summary: DBus could be made to crash if it received specially crafted
input.
Daniel Onaca discovered that DBus contained a use-after-free vulnerability,
caused by the incorrect handling of usernames sharing the same UID. An
attacker could possibly use this issue to cause DBus to crash, resulting
in a denial of service.
Instructions: After a standard system update you need to reboot your computer to make
all the necessary changes.
Red Hat
dbus: users with the same numeric UID could lead to use-after-free and undefined behaviour
vendor_redhat·2020-06-30·CVSS 7.8
CVE-2020-35512 [HIGH] CWE-416 dbus: users with the same numeric UID could lead to use-after-free and undefined behaviour
dbus: users with the same numeric UID could lead to use-after-free and undefined behaviour
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
A use-after-free flaw was found in D-Bus 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 th
Debian
CVE-2020-35512: dbus - A use-after-free flaw was found in D-Bus Development branch <= 1.13.16, dbus-1.1...
vendor_debian·2020·CVSS 7.8
CVE-2020-35512 [HIGH] CVE-2020-35512: dbus - A use-after-free flaw was found in D-Bus Development branch <= 1.13.16, dbus-1.1...
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
Scope: local
bookworm: resolved (fixed in 1.12.20-1)
bullseye: resolved (fixed in 1.12.20-1)
forky: resolved (fixed in 1.12.20-1)
sid: resolved (fixed in 1.12.20-1)
trixie: resolved (fixed in 1.12.20-1)
GHSA
GHSA-f5qm-fxvw-fwjg: A use-after-free flaw was found in D-Bus 1
ghsa_unreviewed·2022-05-24
CVE-2020-35512 [HIGH] CWE-416 GHSA-f5qm-fxvw-fwjg: A use-after-free flaw was found in D-Bus 1
A use-after-free flaw was found in D-Bus 1.12.20 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
OSV
CVE-2020-35512: A use-after-free flaw was found in D-Bus Development branch <= 1
osv·2021-02-15·CVSS 7.8
CVE-2020-35512 [HIGH] CVE-2020-35512: A use-after-free flaw was found in D-Bus Development branch <= 1
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
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
https://bugs.gentoo.org/755392https://bugzilla.redhat.com/show_bug.cgi?id=1909101https://gitlab.freedesktop.org/dbus/dbus/-/issues/305#note_829128https://security-tracker.debian.org/tracker/CVE-2020-35512https://bugs.gentoo.org/755392https://bugzilla.redhat.com/show_bug.cgi?id=1909101https://gitlab.freedesktop.org/dbus/dbus/-/issues/305#note_829128https://security-tracker.debian.org/tracker/CVE-2020-35512
2021-02-15
Published