https://blog.malwarebytes.com/awareness/2021/10/a-bug-is-about-to-confuse-a-lot-of-computers-by-turning-back-time-20-years/
The Cybersecurity & Infrastructure Security Agency (CISA) has issued a
<https://us-cert.cisa.gov/ncas/current-activity/2021/10/21/gps-daemon-gpsd-rollover-bug>warning
<https://us-cert.cisa.gov/ncas/current-activity/2021/10/21/gps-daemon-gpsd-rollover-bug> to Critical Infrastructure (CI) owners
and operators, and other users who get the time from GPS, about a GPS Daemon (GPSD) bug in GPSD versions 3.20 through 3.22.
...
What’s the bug now?
Alongside telling you where in space you are, the Global Positioning System (GPS) can also tell you where in time you are. To do
this, it keeps a count of the number of weeks since January 5, 1980. The main civil GPS signal broadcasts the GPS week number
using a 10-bit code with a maximum value of 1,023 weeks. This means every 19.7 years, the GPS week number in the code rolls over
to zero.
GPSD is a GPS service daemon for Linux, OpenBSD, Mac OS X, and Windows. It collects data from GPS receivers and makes that data
accessible to computers, which can query it on TCP port 2947. It can be found on Android phones, drones, robot submarines,
driverless cars, manned military equipment, and all manner of other embedded systems.
--
Kim Holburn
IT Network & Security Consultant
+61 404072753
mailto:[email protected] aim://kimholburn
skype://kholburn - PGP Public Key on request
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