cbcvebase.
CVE-2019-3977
published 2019-10-29

CVE-2019-3977: RouterOS 6.45.6 Stable, RouterOS 6.44.5 Long-term, and below insufficiently validate where upgrade packages are download from when using the autoupgrade…

PriorityP338high7.5CVSS 3.1
AVNACLPRNUINSUCNIHAN
ITW
Exploited in the wild
EPSS
1.06%
60.3th percentile
RouterOS 6.45.6 Stable, RouterOS 6.44.5 Long-term, and below insufficiently validate where upgrade packages are download from when using the autoupgrade feature. Therefore, a remote attacker can trick the router into "upgrading" to an older version of RouterOS and possibly reseting all the system's usernames and passwords.

Affected

4 ranges
VendorProductVersion rangeFixed in
giflib_projectgiflib>= 0 < 5.1.4-0.3~16.04.15.1.4-0.3~16.04.1
giflib_projectgiflib>= 0 < 5.1.4-2ubuntu0.15.1.4-2ubuntu0.1
mikrotikrouteros<= 6.44.5
mikrotikrouteros<= 6.45.6

CVSS provenance

nvdv3.17.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
nvdv2.08.5HIGHAV:N/AC:L/Au:N/C:N/I:C/A:P
osv5.5MEDIUM
CVEs like this are exactly what “Exploited This Week” covers.

Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.