Описание
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).
| Релиз | Статус | Примечание |
|---|---|---|
| devel | released | 2.32.0-0ubuntu6 |
| esm-infra-legacy/trusty | not-affected | code not present |
| esm-infra/bionic | released | 2.20.9-0ubuntu7.29+esm1 |
| esm-infra/focal | not-affected | 2.20.11-0ubuntu27.28 |
| esm-infra/xenial | released | 2.20.1-0ubuntu2.30+esm5 |
| focal | released | 2.20.11-0ubuntu27.28 |
| jammy | released | 2.20.11-0ubuntu82.7 |
| noble | released | 2.28.1-0ubuntu3.6 |
| oracular | released | 2.30.0-0ubuntu4.3 |
| plucky | released | 2.32.0-0ubuntu5.1 |
Показывать по
4.7 Medium
CVSS3
Связанные уязвимости
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).
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).
Уязвимость функции _check_global_pid_and_forward службы регистрации ошибок apport операционной системы Ubuntu, позволяющая нарушителю раскрыть защищаемую информацию
4.7 Medium
CVSS3