CVE-2019-12583

EUVD-2019-4177
Missing Access Control in the "Free Time" component of several Zyxel UAG, USG, and ZyWall devices allows a remote attacker to generate guest accounts by directly accessing the account generator. This can lead to unauthorised network access or Denial of Service.
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ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
9.1 CRITICAL
NETWORK
LOW
NONE
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 98%
Affected Products (NVD)
VendorProductVersion
zyxeluag2100_firmware
𝑥
≤ 4.18\(aaiz.1\)c0
zyxeluag4100_firmware
𝑥
≤ 4.18\(aatd.1\)c0
zyxeluag5100_firmware
𝑥
≤ 4.18\(aapn.1\)c0
zyxelusg110_firmware
𝑥
≤ 4.33\(aaph.0\)c0
zyxelusg210_firmware
𝑥
≤ 4.33\(aapi.0\)c0
zyxelusg310_firmware
𝑥
≤ 4.33\(aapj.0\)c0
zyxelusg1100_firmware
𝑥
≤ 4.33\(aapk.0\)c0
zyxelusg1900_firmware
𝑥
≤ 4.33\(aapl.0\)c0
zyxelusg2200-vpn_firmware
𝑥
≤ 4.33\(abae.0\)c0
zyxelzywall_vpn100_firmware
𝑥
≤ 10.02\(abfv.0\)c0
zyxelzywall_vpn300_firmware
𝑥
≤ 10.02\(abfc.0\)c0
zyxelzywall_110_firmware
𝑥
≤ 4.33\(aaaa.0\)c0
zyxelzywall_310_firmware
𝑥
≤ 4.33\(aaab.0\)c0
zyxelzywall_1100_firmware
𝑥
≤ 4.33\(aaac.0\)c0
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
https://n-thumann.de/blog/zyxel-gateways-missing-access-control-in-account-generator-xss/
https://www.zyxel.com/support/vulnerabilities-related-to-the-Free-Time-feature.shtml
https://n-thumann.de/blog/zyxel-gateways-missing-access-control-in-account-generator-xss/
https://www.zyxel.com/support/vulnerabilities-related-to-the-Free-Time-feature.shtml