The crontab script in the ntp package before 1:4.2.6.p3+dfsg-1ubuntu3.11 on Ubuntu 12.04 LTS, before 1:4.2.6.p5+dfsg-3ubuntu2.14.04.10 on Ubuntu 14.04 LTS, on Ubuntu Wily, and before 1:4.2.8p4+dfsg-3ubuntu5.3 on Ubuntu 16.04 LTS allows local users with access to the ntp account to write to arbitrary files and consequently gain privileges via vectors involving statistics directory cleanup.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Ubuntu_linux | Canonical | 12.04 (including) | 12.04 (including) |
| Ubuntu_linux | Canonical | 14.04 (including) | 14.04 (including) |
| Ubuntu_linux | Canonical | 16.04 (including) | 16.04 (including) |
| Ntp | Ubuntu | esm-infra-legacy/trusty | * |
| Ntp | Ubuntu | esm-infra/xenial | * |
| Ntp | Ubuntu | precise | * |
| Ntp | Ubuntu | trusty | * |
| Ntp | Ubuntu | trusty/esm | * |
| Ntp | Ubuntu | upstream | * |
| Ntp | Ubuntu | vivid | * |
| Ntp | Ubuntu | vivid/stable-phone-overlay | * |
| Ntp | Ubuntu | wily | * |
| Ntp | Ubuntu | xenial | * |
References
- http://packetstormsecurity.com/files/141913/NTP-Privilege-Escalation.html
- http://www.securityfocus.com/bid/81552
- http://www.securitytracker.com/id/1034808
- http://www.ubuntu.com/usn/USN-3096-1
- https://bugs.launchpad.net/ubuntu/+source/ntp/+bug/1528050
- https://bugzilla.redhat.com/show_bug.cgi?id=1382369
- http://packetstormsecurity.com/files/141913/NTP-Privilege-Escalation.html
- http://www.securityfocus.com/bid/81552
- http://www.securitytracker.com/id/1034808
- http://www.ubuntu.com/usn/USN-3096-1
- https://bugs.launchpad.net/ubuntu/+source/ntp/+bug/1528050
- https://bugzilla.redhat.com/show_bug.cgi?id=1382369