VulnerabilityModified
CVE-2021-3672
A flaw was found in c-ares library, where a missing input validation check of host names returned by DNS (Domain Name Servers) can lead to output of wrong hostnames which might potentially lead to Domain Hijacking.
MEDIUM 5.6EPSS 2.62%
Does this matter?
Lower severity and a low EPSS score (2.62%). Track it; it rarely justifies an emergency change on its own.
Description
A flaw was found in c-ares library, where a missing input validation check of host names returned by DNS (Domain Name Servers) can lead to output of wrong hostnames which might potentially lead to Domain Hijacking. The highest threat from this vulnerability is to confidentiality and integrity as well as system availability.
- CVSS 3.1
- 5.6 MEDIUMCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L
- EPSS
- 2.62% probability · 85th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-79
- Affected
- c-ares project/c-ares · fedoraproject/fedora · redhat/enterprise linux · redhat/enterprise linux computer node · redhat/enterprise linux eus · redhat/enterprise linux for ibm z systems · redhat/enterprise linux for ibm z systems eus · redhat/enterprise linux for power little endian · redhat/enterprise linux for power little endian eus · redhat/enterprise linux server aus · redhat/enterprise linux server tus · redhat/enterprise linux server update services for sap solutions · redhat/enterprise linux tus · redhat/enterprise linux workstation · siemens/sinec infrastructure network services · nodejs/node.js · pgbouncer/pgbouncer
- Source
- secalert@redhat.com
References
- https://bugzilla.redhat.com/show_bug.cgi?id=1988342Issue Tracking, Third Party Advisory
- https://c-ares.haxx.se/adv_20210810.htmlExploit, Patch, Vendor Advisory
- https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdfPatch, Third Party Advisory
- https://security.gentoo.org/glsa/202401-02
- https://www.oracle.com/security-alerts/cpujul2022.htmlThird Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1988342Issue Tracking, Third Party Advisory
- https://c-ares.haxx.se/adv_20210810.htmlExploit, Patch, Vendor Advisory
- https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdfPatch, Third Party Advisory
- https://security.gentoo.org/glsa/202401-02
- https://www.oracle.com/security-alerts/cpujul2022.htmlThird Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.