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

Affected Software

VendorProductVersion RangeStatus
n/aD-Bus Development branch<= 1.13.16 (Fixed: >= 1.13.18)affected
n/adbus-1.12.x stable branch<= 1.12.18 (Fixed: >= 1.12.20)affected
n/adbus-1.10.x and older branches (EOL)<= 1.10.30 (Fixed: 1.10.32)affected

Weaknesses

  • Use-After-Free

ADP Enrichment

CVE Program Container

Additional References

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: total

References