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CVE-2019-16889

HIGH
7.5
CVSS Score
Published: September 25, 2019 at 07:51 PM UTC
Updated: June 17, 2026 at 02:22 AM UTC
24 products affected across 1 vendorEr X FirmwareEr X Sfp FirmwareEr 12 Firmware

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Severity
HIGH7.5
Exploit prediction
EPSS 5%

Description

Ubiquiti EdgeMAX devices before 2.0.3 allow remote attackers to cause a denial of service (disk consumption) because *.cache files in /var/run/beaker/container_file/ are created when providing a valid length payload of 249 characters or fewer to the beaker.session.id cookie in a GET header. The attacker can use a long series of unique session IDs.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Ep R6 Firmware· UI
95%
v < 2.0.3
Affected range stops below 2.0.3, so it looks safe — our inference, not a vendor statement
ui-ep-r6 (same device)
Ep R8 Firmware· UI
95%
v < 2.0.3
Affected range stops below 2.0.3, so it looks safe — our inference, not a vendor statement
ui-ep-r8 (same device)
Er 12 Firmware· UI
95%
v < 2.0.3
Affected range stops below 2.0.3, so it looks safe — our inference, not a vendor statement
ui-er-12 (same device)
Er 4 Firmware· UI
95%
v < 2.0.3
Affected range stops below 2.0.3, so it looks safe — our inference, not a vendor statement
ui-er-4 (same device)
Er 6P Firmware· UI
95%
v < 2.0.3
Affected range stops below 2.0.3, so it looks safe — our inference, not a vendor statement
ui-er-6p (same device)
Er 8 Firmware· UI
95%
v < 2.0.3
Affected range stops below 2.0.3, so it looks safe — our inference, not a vendor statement
ui-er-8 (same device)
Er 8-xg Firmware· UI
95%
v < 2.0.3
Affected range stops below 2.0.3, so it looks safe — our inference, not a vendor statement
ui-er-8-xg (same device)
Er X Firmware· UI
95%
v < 2.0.3
Affected range stops below 2.0.3, so it looks safe — our inference, not a vendor statement
ui-er-x (same device)
Er X Sfp Firmware· UI
95%
v < 2.0.3
Affected range stops below 2.0.3, so it looks safe — our inference, not a vendor statement
ui-er-x-sfp (same device)
Erlite 3 Firmware· UI
95%
v < 2.0.3
Affected range stops below 2.0.3, so it looks safe — our inference, not a vendor statement
ui-erlite-3 (same device)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (3)

x_refsource_MISCPatchVendor Advisory
Source: [email protected]
https://community.ui.com/releases/New-EdgeRouter-firmware-2-0-3-has-been-released-2-0-3/e8badd28-a112-4269-9fb6-ffe3fc0e1643
x_refsource_MISCExploitIssue TrackingThird Party Advisory
Source: [email protected]
https://hackerone.com/reports/406614
x_refsource_MISCExploitThird Party Advisory
Source: [email protected]
https://mjlanders.com/2019/07/28/resource-consumption-dos-on-edgemax-v1-10-6/

CVSS

7.5HIGH[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-770

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