7.8

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. 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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Systemd Project ≫ Systemd Version <= 244
Redhat ≫ Ceph Storage Version4.0
Redhat ≫ Discovery Version-
Redhat ≫ Migration Toolkit Version1.0
Redhat ≫ Enterprise Linux Version8.0
Debian ≫ Debian Linux Version9.0
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.46% 0.363
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 7.8 1.8 5.9
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
nvd@nist.gov 4.6 3.9 6.4
AV:L/AC:L/Au:N/C:P/I:P/A:P
secalert@redhat.com 7.8 1.8 5.9
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE-416 Use After Free

The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-1712
Patch
Third Party Advisory
Issue Tracking
https://github.com/systemd/systemd/commit/1068447e6954dc6ce52f099ed174c442cb89ed54
Patch
Third Party Advisory
https://github.com/systemd/systemd/commit/637486261528e8aa3da9f26a4487dc254f4b7abb
Patch
Third Party Advisory
https://github.com/systemd/systemd/commit/bc130b6858327b382b07b3985cf48e2aa9016b2d
Patch
Third Party Advisory
https://github.com/systemd/systemd/commit/ea0d0ede03c6f18dbc5036c5e9cccf97e415ccc2
Patch
Third Party Advisory
https://lists.debian.org/debian-lts-announce/2022/06/msg00025.html
Third Party Advisory
Mailing List
https://www.openwall.com/lists/oss-security/2020/02/05/1
Patch
Third Party Advisory
Mailing List