High severity · published Mar 31, 2020
CVE-2020-1712
A heap use-after-free vulnerability was found in systemd before version v245-rc1, where asynchronous Polkit queries are performed while handling dbus messages
7.8
CVSS
0.5%
EPSS
No
On KEV
Description
A heap use-after-free vulnerability was found in systemd before version v245-rc1, where asynchronous Polkit queries are performed while handling dbus messages. A local unprivileged attacker can abuse this flaw to crash systemd services or potentially execute code and elevate their privileges, by sending specially crafted dbus messages.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 39% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SY
systemd · [UNKNOWN]
before v245-rc1 · source: vendor, NVD
CS
Ceph Storage · Redhat
4.0 · source: NVD
DL
Debian Linux · Debian
9.0 · source: NVD
DI
Discovery · Redhat
All versions, or not specified · source: NVD
EL
Enterprise Linux · Redhat
8.0 · source: NVD
MT
Migration Toolkit · Redhat
1.0 · source: NVD
OC
Openshift Container Platform · Redhat
4.0 · source: NVD
SS
SIMATIC S7-1500 CPU 1518-4 PN/DP MFP · Siemens
V3.1.0 before V3.1.5; V3.1.0 before V3.1.5 · source: CISA
SS
SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP · Siemens
V3.1.0 before V3.1.5; V3.1.0 before V3.1.5 · source: CISA
SS
SIPLUS S7-1500 CPU 1518-4 PN/DP MFP · Siemens
V3.1.0 before V3.1.5 · source: CISA
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-1712
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-1712
Issue Tracking
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-1712
Patch
https://github.com/systemd/systemd/commit/1068447e6954dc6ce52f099ed174c442cb89ed54
Patch
https://github.com/systemd/systemd/commit/637486261528e8aa3da9f26a4487dc254f4b7abb
Patch
https://github.com/systemd/systemd/commit/bc130b6858327b382b07b3985cf48e2aa9016b2d
Patch
https://github.com/systemd/systemd/commit/ea0d0ede03c6f18dbc5036c5e9cccf97e415ccc2
Mailing List
https://lists.debian.org/debian-lts-announce/2022/06/msg00025.html