| Summary | A race condition in perf_event_open() allows local attackers to leak sensitive data from setuid programs. As no relevant locks (in particular the cred_guard_mutex) are held during the ptrace_may_access() call, it is possible for the specified target task to perform an execve() syscall with setuid execution before perf_event_alloc() actually attaches to it, allowing an attacker to bypass the ptrace_may_access() check and the perf_event_exit_task(current) call that is performed in install_exec_creds() during privileged execve() calls. This issue affects kernel versions before 4.8. |
|---|---|
| Publication Date | April 23, 2019, 1:29 a.m. |
| Registration Date | Jan. 26, 2021, 11:42 a.m. |
| Last Update | Nov. 21, 2024, 1:42 p.m. |
| CVSS3.1 : MEDIUM | |
| スコア | 4.7 |
|---|---|
| Vector | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N |
| 攻撃元区分(AV) | ローカル |
| 攻撃条件の複雑さ(AC) | 高 |
| 攻撃に必要な特権レベル(PR) | 低 |
| 利用者の関与(UI) | 不要 |
| 影響の想定範囲(S) | 変更なし |
| 機密性への影響(C) | 高 |
| 完全性への影響(I) | なし |
| 可用性への影響(A) | なし |
| CVSS2.0 : LOW | |
| Score | 1.9 |
|---|---|
| Vector | AV:L/AC:M/Au:N/C:P/I:N/A:N |
| 攻撃元区分(AV) | ローカル |
| 攻撃条件の複雑さ(AC) | 中 |
| 攻撃前の認証要否(Au) | 不要 |
| 機密性への影響(C) | 低 |
| 完全性への影響(I) | なし |
| 可用性への影響(A) | なし |
| Get all privileges. | いいえ |
| Get user privileges | いいえ |
| Get other privileges | いいえ |
| User operation required | いいえ |
| Configuration1 | or higher | or less | more than | less than | |
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 4.8 | ||||
| Configuration2 | or higher | or less | more than | less than | |
| cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* | |||||
| Configuration3 | or higher | or less | more than | less than | |
| cpe:2.3:a:netapp:vasa_provider_for_clustered_data_ontap:*:*:*:*:*:*:*:* | 7.2 | ||||
| cpe:2.3:a:netapp:solidfire:-:*:*:*:*:*:*:* | |||||
| cpe:2.3:a:netapp:hci_management_node:-:*:*:*:*:*:*:* | |||||
| cpe:2.3:a:netapp:snapprotect:-:*:*:*:*:*:*:* | |||||
| cpe:2.3:a:netapp:active_iq_unified_manager_for_vmware_vsphere:*:*:*:*:*:*:*:* | 9.5 | ||||
| cpe:2.3:a:netapp:virtual_storage_console_for_vmware_vsphere:*:*:*:*:*:*:*:* | 7.2 | ||||
| cpe:2.3:a:netapp:storage_replication_adapter_for_clustered_data_ontap_for_vmware_vsphere:*:*:*:*:*:*:*:* | 7.2 | ||||
| Configuration4 | or higher | or less | more than | less than | |
| cpe:2.3:o:netapp:cn1610_firmware:-:*:*:*:*:*:*:* | |||||
| execution environment | |||||
| 1 | cpe:2.3:h:netapp:cn1610:-:*:*:*:*:*:*:* | ||||
| Title | Linux Kernel における競合状態に関する脆弱性 |
|---|---|
| Summary | Linux Kernel には、競合状態に関する脆弱性が存在します。 |
| Possible impacts | 情報を取得される可能性があります。 |
| Solution | ベンダ情報および参考情報を参照して適切な対策を実施してください。 |
| Publication Date | April 18, 2019, midnight |
| Registration Date | May 31, 2019, 12:30 p.m. |
| Last Update | May 31, 2019, 12:30 p.m. |
| Linux |
| Linux Kernel 4.8 未満 |
| No | Changed Details | Date of change |
|---|---|---|
| 1 | [2019年05月31日] 掲載 |
May 31, 2019, 12:30 p.m. |