CVE-2019-19824A3002ru Firmware OS Command Injection
On certain TOTOLINK Realtek SDK based routers, an authenticated attacker may execute arbitrary OS commands via the sysCmd parameter to the boafrm/formSysCmd URI, even if the GUI (syscmd.htm) is not available.
Published Jan 27, 2020 · Updated Nov 21, 2024
Key Facts
Patch immediately- CVE-2019-19824 is a high-severity vulnerability (CVSS 8.8 v3.1) affecting A3002ru Firmware (Totolink), A702r Firmware (Totolink), N100re Firmware (Totolink) and 5 more products.
- It is exploited in the wild, listed in CIRCL KEV, Industry KEV feed since Nov 11, 2021. Public exploit code is available.
- EPSS estimates a 25% probability of exploitation in the next 30 days.
- Fixed versions are available, including A3002ru Firmware <=2.0.0, A702r Firmware <=2.1.3, N100re Firmware <=3.4.0.
- Brandefense priority: patch immediately, because it is listed as exploited in the wild.
Scores
CVSS v3.1
8.8
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS (30-day exploit likelihood)
25%
Higher than 97.9% of all scored CVEs
Exploit maturity
Exploited (KEV)
ATLAS score
50/100
Publication score, see How it works
Exploitation Verdict
KEV listed
Nov 11, 2021
654 days after publication
Federal due date
None
No federal due date
Ransomware use
Not reported
Attributed actors
None named
Exploit & Defence Guidance
Exploit maturity
Exploited (KEV)
Public exploit code
1
Proof-of-concept links
In-the-wild evidence
13
Reports of active use
Description
On certain TOTOLINK Realtek SDK based routers, an authenticated attacker may execute arbitrary OS commands via the sysCmd parameter to the boafrm/formSysCmd URI, even if the GUI (syscmd.htm) is not available. This allows for full control over the device's internals.
This affects A3002RU through 2.0.0, A702R through 2.1.3, N301RT through 2.1.6, N302R through 3.4.0, N300RT through 3.4.0, N200RE through 4.0.0, N150RT through 3.4.0, N100RE through 3.4.0, and N302RE 2.0.2.
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| CIRCL KEV | Nov 11, 2021 | n/a | Not reported |
| Industry KEV feed | Nov 11, 2021 | n/a | Not reported |
Affected Products
8 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| A3002ru FirmwareTotolink | See advisory | 2.0.0 |
| A702r FirmwareTotolink | See advisory | 2.1.3 |
| N100re FirmwareTotolink | See advisory | 3.4.0 |
| N150rt FirmwareTotolink | See advisory | 3.4.0 |
| N200re FirmwareTotolink | See advisory | 4.0.0 |
Patched Releases
A3002ru Firmware
<=2.0.0
A702r Firmware
<=2.1.3
N100re Firmware
<=3.4.0
N150rt Firmware
<=3.4.0
N200re Firmware
<=4.0.0
N300rt Firmware
<=3.4.0
N301rt Firmware
<=2.1.6
N302r Firmware
<=3.4.0
Timeline
Publicly disclosed
Jan 27, 2020
Added to CIRCL KEV
Nov 11, 2021
Added to Industry KEV feed
Nov 11, 2021
Last updated
Nov 21, 2024
Weakness Type
- CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
References
- exploitVulnCheck exploitation report
- exploitVulnCheck exploitation report
- exploitVulnCheck exploitation report
- exploitVulnCheck exploitation report
- exploitVulnCheck exploitation report
FAQ
Common Questions.
On certain TOTOLINK Realtek SDK based routers, an authenticated attacker may execute arbitrary OS commands via the sysCmd parameter to the boafrm/formSysCmd URI, even if the GUI (syscmd.htm) is not available.
Affected: A3002ru Firmware (Totolink); A702r Firmware (Totolink); N100re Firmware (Totolink), among others. The full list is in the CVE brief.
It is exploited in the wild, listed in CIRCL KEV, Industry KEV feed since Nov 11, 2021.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
Public exploit code is available.
Fixed versions are available, including A3002ru Firmware <=2.0.0, A702r Firmware <=2.1.3, N100re Firmware <=3.4.0.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.
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