VDB
CVE-2017-18344
CVE-2017-18344
PUBLISHED
The timer_create syscall implementation in kernel/time/posix-timers.c in the Linux kernel before 4.14.8 doesn't properly validate the sigevent->sigev_notify field, which leads to out-of-bounds access in the show_timer function (called when /proc/$PID/timers is read). This allows userspace applications to read arbitrary kernel memory (on a kernel built with CONFIG_POSIX_TIMERS and CONFIG_CHECKPOINT_RESTORE).
EPSS 12.86% · 94.2th percentile
Risk Scores
EPSS Score
12.86%
94.2th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Ubuntu:16.04:LTS | linux-hwe | 4.10.0-33.37~16.04.1, 4.13.0-36.40~16.04.1, * |
| Ubuntu:20.04:LTS | linux-azure-fde | 5.4.0-1089.94+cvm1.2, 5.4.0-1085.90+cvm2.1, 5.4.0-1085.90+cvm1.1 |
| Ubuntu:22.04:LTS | linux-riscv | 5.15.0-1028.32, 0, 5.13.0-1006.6+22.04.1 |
| Ubuntu:22.04:LTS | linux-realtime | 0, 5.15.0-1032.35 |
| Ubuntu:20.04:LTS | linux-raspi2 | 0, 5.3.0-1017.19, 5.4.0-1004.4 |
| Ubuntu:16.04:LTS | linux-kvm | 0, 4.4.0-1007.12, 4.4.0-1008.13 |
| Ubuntu:14.04:LTS | linux | 3.13.0-121.170, 3.13.0-123.172, 3.13.0-125.174 |
| Ubuntu:16.04:LTS | linux-azure | 0, 4.11.0-1009.9, 4.11.0-1014.14 |
| Ubuntu:16.04:LTS | linux-aws | 4.4.0-1031.40, 4.4.0-1030.39, 4.4.0-1028.37 |
| Ubuntu:16.04:LTS | linux-gcp | 4.13.0-1012.16, 0, 4.10.0-1004.4 |
| Ubuntu:14.04:LTS | linux-lts-xenial | 4.4.0-103.126~14.04.1, 4.4.0-111.134~14.04.1, 4.4.0-104.127~14.04.1 |
| Ubuntu:24.04:LTS | linux-raspi-realtime | 6.8.0-2019.20, 0 |
| Ubuntu:22.04:LTS | linux-intel-iot-realtime | 0, 5.15.0-1073.75 |
| Ubuntu:Pro:FIPS:16.04:LTS | linux-fips | 4.4.0-1005.5, 4.4.0-1006.6, 4.4.0-1003.3 |
| Ubuntu:16.04:LTS | linux | 4.4.0-53.74, 4.4.0-119.143, 4.4.0-42.62 |
| Ubuntu:20.04:LTS | linux-gke | 5.4.0-1102.109, 5.4.0-1086.93, 5.4.0-1087.94 |
| Ubuntu:20.04:LTS | linux-riscv | 5.4.0-26.30, 0, 5.4.0-24.28 |
| Ubuntu:16.04:LTS | linux-raspi2 | 4.4.0-1050.57, 4.4.0-1052.59, 4.4.0-1051.58 |
| Ubuntu:16.04:LTS | linux-euclid | 4.4.0-9023.24, 4.4.0-9022.23, 0 |
| Ubuntu:16.04:LTS | linux-snapdragon | 4.4.0-1079.84, 4.4.0-1063.68, 4.4.0-1059.63 |
…and 1 more
Exploit Intelligence
- Escape from Docker using CVE-2017-1000112 and CVE-2017-18344, including gaining root privilage, get all capbilities, namespace recovery, filesystem recovery, cgroup limitation bypass and seccomp bypass. (github-poc-repo)
- Escape from Docker using CVE-2017-1000112 and CVE-2017-18344, including gaining root privilage, get all capbilities, namespace recovery, filesystem recovery, cgroup limitation bypass and seccomp bypass. (github-poc-repo)
- Escape from Docker using CVE-2017-1000112 and CVE-2017-18344, including gaining root privilage, get all capbilities, namespace recovery, filesystem recovery, cgroup limitation bypass and seccomp bypass. (github-poc-repo)
- Escape from Docker using CVE-2017-1000112 and CVE-2017-18344, including gaining root privilage, get all capbilities, namespace recovery, filesystem recovery, cgroup limitation bypass and seccomp bypass. (github-poc-repo)
- Escape from Docker using CVE-2017-1000112 and CVE-2017-18344, including gaining root privilage, get all capbilities, namespace recovery, filesystem recovery, cgroup limitation bypass and seccomp bypass. (github-poc-repo)
- Escape from Docker using CVE-2017-1000112 and CVE-2017-18344, including gaining root privilage, get all capbilities, namespace recovery, filesystem recovery, cgroup limitation bypass and seccomp bypass. (github-poc-repo)
- Escape from Docker using CVE-2017-1000112 and CVE-2017-18344, including gaining root privilage, get all capbilities, namespace recovery, filesystem recovery, cgroup limitation bypass and seccomp bypass. (github-poc-repo)
- LPE on linux kernel based on CVE-2017-14954, CVE-2017-18344, CVE-2017-5123 (github-poc-repo)
- LPE on linux kernel based on CVE-2017-14954, CVE-2017-18344, CVE-2017-5123 (github-poc-repo)
- LPE on linux kernel based on CVE-2017-14954, CVE-2017-18344, CVE-2017-5123 (github-poc-repo)
…and 7 more exploits
Timeline
- Jul 26, 2018 CVE Published
- Aug 9, 2018 PoC Published
- Apr 14, 2021 EPSS Score
- Aug 24, 2021 EPSS Score
- Oct 26, 2021 EPSS Score
- Feb 4, 2022 EPSS Score
- May 2, 2022 EPSS Score
- Sep 5, 2022 EPSS Score
- Nov 6, 2022 EPSS Score
- Mar 7, 2023 EPSS Score
- May 13, 2023 EPSS Score
- Sep 15, 2023 EPSS Score
References
- https://ubuntu.com/security/CVE-2017-18344 third-party-advisory
- https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.8 third-party-advisory
- https://github.com/torvalds/linux/commit/cef31d9af908243421258f1df35a4a644604efbe third-party-advisory
- http://www.openwall.com/lists/oss-security/2018/08/09/6 third-party-advisory
- https://ubuntu.com/security/notices/USN-3742-1 vendor-advisory
- https://ubuntu.com/security/notices/USN-3742-2 vendor-advisory
- https://www.cve.org/CVERecord?id=CVE-2017-18344 third-party-advisory