6.8 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:P/I:P/A:P
5.6 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
LOW
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L
0.002 Low
EPSS
Percentile
52.8%
Severity: Medium
Date : 2021-08-10
CVE-ID : CVE-2021-3672
Package : c-ares
Type : insufficient validation
Remote : Yes
Link : https://security.archlinux.org/AVG-2268
The package c-ares before version 1.17.2-1 is vulnerable to
insufficient validation.
Upgrade to 1.17.2-1.
The problem has been fixed upstream in version 1.17.2.
None.
Missing input validation of host names returned by Domain Name Servers
in the c-ares library before version 1.17.2 can lead to output of wrong
hostnames (leading to domain hijacking).
A remote attacker with the ability to create DNS entries could create
crafted entries that output the wrong hostname when resolved with
c-ares, leading to potential domain hijacking.
https://c-ares.haxx.se/adv_20210810.html
https://github.com/c-ares/c-ares/commit/362f91d807d293791008cdb7616d40f7784ece83
https://github.com/c-ares/c-ares/commit/44c009b8e62ea1929de68e3f438181bea469ec14
https://security.archlinux.org/CVE-2021-3672
6.8 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:P/I:P/A:P
5.6 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
LOW
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L
0.002 Low
EPSS
Percentile
52.8%