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Untriaged
Permalink CVE-2025-5054
4.7 MEDIUM
  • CVSS version: 3.1
  • Attack vector (AV): LOCAL
  • Attack complexity (AC): HIGH
  • Privileges required (PR): LOW
  • User interaction (UI): NONE
  • Scope (S): UNCHANGED
  • Confidentiality impact (C): HIGH
  • Integrity impact (I): NONE
  • Availability impact (A): NONE
created 6 months ago
Race Condition in Canonical Apport

Race condition in Canonical apport up to and including 2.32.0 allows a local attacker to leak sensitive information via PID-reuse by leveraging namespaces. When handling a crash, the function `_check_global_pid_and_forward`, which detects if the crashing process resided in a container, was being called before `consistency_checks`, which attempts to detect if the crashing process had been replaced. Because of this, if a process crashed and was quickly replaced with a containerized one, apport could be made to forward the core dump to the container, potentially leaking sensitive information. `consistency_checks` is now being called before `_check_global_pid_and_forward`. Additionally, given that the PID-reuse race condition cannot be reliably detected from userspace alone, crashes are only forwarded to containers if the kernel provided a pidfd, or if the crashing process was unprivileged (i.e., if dump mode == 1).

Affected products

apport
  • <2.33.0-0ubuntu1
  • <2.20.11-0ubuntu27.28
  • <2.28.1-0ubuntu3.6
  • <2.20.11-0ubuntu82.7
  • <2.20.9-0ubuntu7.29+esm1
  • <2.30.0-0ubuntu4.3
  • <2.32.0-0ubuntu5.1
  • =<2.32.0
  • <2.20.1-0ubuntu2.30+esm5
  • <2.32.0-0ubuntu6

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