Vulnerability Description
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
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Freedesktop | Dbus | 1.12.20 |
| Linux | Linux Kernel | - |
Related Weaknesses (CWE)
References
- https://bugs.gentoo.org/755392Issue TrackingThird Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1909101
- https://gitlab.freedesktop.org/dbus/dbus/-/issues/305#note_829128
- https://security-tracker.debian.org/tracker/CVE-2020-35512
- https://bugs.gentoo.org/755392Issue TrackingThird Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1909101
- https://gitlab.freedesktop.org/dbus/dbus/-/issues/305#note_829128
- https://security-tracker.debian.org/tracker/CVE-2020-35512
FAQ
What is CVE-2020-35512?
CVE-2020-35512 is a vulnerability with a CVSS score of 7.8 (HIGH). 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...
How severe is CVE-2020-35512?
CVE-2020-35512 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2020-35512?
Check the references section above for vendor advisories and patch information. Affected products include: Freedesktop Dbus, Linux Linux Kernel.