CVE-2019-19825

high-risk
Published 2020-01-27

On certain TOTOLINK Realtek SDK based routers, the CAPTCHA text can be retrieved via an {"topicurl":"setting/getSanvas"} POST to the boafrm/formLogin URI, leading to a CAPTCHA bypass. (Also, the CAPTCHA text is not needed once the attacker has determined valid credentials. The attacker can perform router actions via HTTP requests with Basic Authentication.) 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, and N100RE through 3.4.0.

Do I need to act?

!
28.8% chance of exploitation in next 30 days
EPSS score — higher than 71% of all CVEs
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
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Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
9
CVSS 9.8/10 Critical
NETWORK / LOW complexity

Affected Products (8)

Affected Vendors

Totolink

References (8)

Third Party Advisory http://packetstormsecurity.com/files/156083/Realtek-SDK-Information-Disclosure-C...
Mailing List http://seclists.org/fulldisclosure/2020/Jan/36
Mailing List http://seclists.org/fulldisclosure/2020/Jan/38
Exploit https://sploit.tech
Third Party Advisory http://packetstormsecurity.com/files/156083/Realtek-SDK-Information-Disclosure-C...
Mailing List http://seclists.org/fulldisclosure/2020/Jan/36
Mailing List http://seclists.org/fulldisclosure/2020/Jan/38
Exploit https://sploit.tech
61
/ 100
high-risk
Severity 32/34 · Critical
Exploitability 15/34 · Moderate
Exposure 14/34 · Moderate