High severity · published Jul 29, 2020
CVE-2020-5761
Grandstream HT800 series firmware version 1.0.17.5 and below is vulnerable to CPU exhaustion due to an infinite loop in the TR-069 service
7.5
CVSS
4.1%
EPSS
No
On KEV
Description
Grandstream HT800 series firmware version 1.0.17.5 and below is vulnerable to CPU exhaustion due to an infinite loop in the TR-069 service. Unauthenticated remote attackers can trigger this case by sending a one character TCP message to the TR-069 service.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)4.1% · higher than 91% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
HF
Ht801 Firmware · Grandstream
through 1.0.17.5 · source: NVD
HF
Ht802 Firmware · Grandstream
through 1.0.17.5 · source: NVD
HF
Ht812 Firmware · Grandstream
through 1.0.17.5 · source: NVD
HF
Ht813 Firmware · Grandstream
through 1.0.17.5 · source: NVD
HF
Ht814 Firmware · Grandstream
through 1.0.17.5 · source: NVD
HF
Ht818 Firmware · Grandstream
through 1.0.17.5 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-5761
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-5761
Exploit
https://www.tenable.com/security/research/tra-2020-43
Third Party Advisory
https://www.tenable.com/security/research/tra-2020-47
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