CVE-2019-13272
high · 7.8Actively exploitedOn the CISA Known Exploited Vulnerabilities catalog
Apply updates per vendor instructions.
In the Linux kernel before 5.1.17, ptrace_link in kernel/ptrace.c mishandles the recording of the credentials of a process that wants to create a ptrace relationship, which allows local users to obtain root access by leveraging certain scenarios with a parent-child process relationship, where a parent drops privileges and calls execve (potentially allowing control by an attacker). One contributing factor is an object lifetime issue (which can also cause a panic). Another contributing factor is incorrect marking of a ptrace relationship as privileged, which is exploitable through (for example) Polkit's pkexec helper with PTRACE_TRACEME. NOTE: SELinux deny_ptrace might be a usable workaround in some environments.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| linux | linux_kernel | >= 3.16.52, < 3.16.71 |
| linux | linux_kernel | >= 4.1.39, < 4.2 |
| linux | linux_kernel | >= 4.4.40, < 4.4.185 |
| linux | linux_kernel | >= 4.8.16, < 4.9 |
| linux | linux_kernel | >= 4.9.1, < 4.9.185 |
| linux | linux_kernel | >= 4.10, < 4.14.133 |
| linux | linux_kernel | >= 4.15, < 4.19.58 |
| linux | linux_kernel | >= 4.20, < 5.1.17 |
| debian | debian_linux | 8.0 |
| debian | debian_linux | 9.0 |
| debian | debian_linux | 10.0 |
| fedoraproject | fedora | 29 |
| canonical | ubuntu_linux | 16.04 |
| canonical | ubuntu_linux | 18.04 |
| canonical | ubuntu_linux | 19.04 |
| redhat | enterprise_linux | 7.0 |
| redhat | enterprise_linux | 8.0 |
| redhat | enterprise_linux_for_arm_64 | 7.0_aarch64 |
| redhat | enterprise_linux_for_ibm_z_systems | 7.0_s390x |
| redhat | enterprise_linux_for_real_time | 8 |
| redhat | enterprise_linux_for_real_time_for_nfv | 8.0 |
| redhat | enterprise_linux_for_real_time_for_nfv_tus | 8.2 |
| redhat | enterprise_linux_for_real_time_for_nfv_tus | 8.4 |
| redhat | enterprise_linux_for_real_time_for_nfv_tus | 8.6 |
| redhat | enterprise_linux_for_real_time_for_nfv_tus | 8.8 |
| redhat | enterprise_linux_for_real_time_tus | 8.2 |
| redhat | enterprise_linux_for_real_time_tus | 8.4 |
| redhat | enterprise_linux_for_real_time_tus | 8.6 |
| redhat | enterprise_linux_for_real_time_tus | 8.8 |
| netapp | aff_a700s_firmware | all versions |
| netapp | aff_a700s | all versions |
| netapp | h410c_firmware | all versions |
| netapp | h410c | all versions |
| netapp | h610s_firmware | all versions |
| netapp | h610s | all versions |
| netapp | active_iq_unified_manager | all versions |
| netapp | e-series_performance_analyzer | all versions |
| netapp | e-series_santricity_os_controller | >= 11.0.0, <= 11.60.3 |
| netapp | hci_management_node | all versions |
| netapp | service_processor | all versions |
Check a specific version with /api/v1/cve/match.
References
- http://packetstormsecurity.com/files/153663/Linux-PTRACE_TRACEME-Broken-Permission-Object-Lifetime-Handling.html
- http://packetstormsecurity.com/files/153702/Slackware-Security-Advisory-Slackware-14.2-kernel-Updates.html
- http://packetstormsecurity.com/files/154245/Kernel-Live-Patch-Security-Notice-LSN-0054-1.html
- http://packetstormsecurity.com/files/154957/Linux-Polkit-pkexec-Helper-PTRACE_TRACEME-Local-Root.html
- http://packetstormsecurity.com/files/156929/Linux-PTRACE_TRACEME-Local-Root.html
- http://packetstormsecurity.com/files/165051/Linux-Kernel-5.1.x-PTRACE_TRACEME-pkexec-Local-Privilege-Escalation.html
- https://access.redhat.com/errata/RHSA-2019:2405
- https://access.redhat.com/errata/RHSA-2019:2411
- https://access.redhat.com/errata/RHSA-2019:2809
- https://bugs.chromium.org/p/project-zero/issues/detail?id=1903
- https://bugzilla.redhat.com/show_bug.cgi?id=1730895
- https://bugzilla.suse.com/show_bug.cgi?id=1140671
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.1.17
- https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=6994eefb0053799d2e07cd140df6c2ea106c41ee
- https://github.com/torvalds/linux/commit/6994eefb0053799d2e07cd140df6c2ea106c41ee
- https://lists.debian.org/debian-lts-announce/2019/07/msg00022.html
- https://lists.debian.org/debian-lts-announce/2019/07/msg00023.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OGRK5LYWBJ4E4SRI4DKX367NHYSI3VOH/
- https://seclists.org/bugtraq/2019/Jul/30
- https://seclists.org/bugtraq/2019/Jul/33
- https://security.netapp.com/advisory/ntap-20190806-0001/
- https://support.f5.com/csp/article/K91025336
- https://support.f5.com/csp/article/K91025336?utm_source=f5support&%3Butm_medium=RSS
- https://usn.ubuntu.com/4093-1/
- https://usn.ubuntu.com/4094-1/
Query this programmatically:
curl https://evil-db.io/api/v1/cve/CVE-2019-13272