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
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).
References
- https://ubuntu.com/security/CVE-2025-5054 vdb-entry
- https://www.qualys.com/2025/05/29/apport-coredump/apport-coredump.txt third-party-advisory
- https://ubuntu.com/security/notices/USN-7545-1 vendor-advisory
- https://ubuntu.com/security/CVE-2025-5054 vdb-entry
- https://www.qualys.com/2025/05/29/apport-coredump/apport-coredump.txt third-party-advisory
- https://ubuntu.com/security/notices/USN-7545-1 vendor-advisory
- https://ubuntu.com/security/notices/USN-7545-1 vendor-advisory
- https://ubuntu.com/security/CVE-2025-5054 vdb-entry
- https://www.qualys.com/2025/05/29/apport-coredump/apport-coredump.txt third-party-advisory
- http://seclists.org/fulldisclosure/2025/Jun/9
Affected products
- <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
Matching in nixpkgs
pkgs.haskellPackages.apportionment
Round a set of numbers while maintaining its sum
-
nixos-unstable -
- nixpkgs-unstable 0.0.0.4
Package maintainers
-
@thielema Henning Thielemann <nix@henning-thielemann.de>