High severity · published May 29, 2021
CVE-2021-31702
Frontier ichris through 5.18 mishandles making a DNS request for the hostname in the HTTP Host header, as demonstrated by submitting 127.0.0.1 multiple times for DoS
7.5
CVSS
1.2%
EPSS
No
On KEV
Description
Frontier ichris through 5.18 mishandles making a DNS request for the hostname in the HTTP Host header, as demonstrated by submitting 127.0.0.1 multiple times for DoS.
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)1.2% · higher than 69% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
IC
Ichris · Frontiersoftware
through 5.18 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-31702
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-31702
Exploit
https://github.com/l00neyhacker/CVE-2021-31702
More from Ichris
9.8
CVE-2021-31703
Frontier ichris through 5.18 allows users to upload malicious executable files that might later be downloaded and run by any client user