CVE-2021-25220 DNS forwarders - cache poisoning vulnerability

2022-03-2300:00:00

isc

www.cve.org

6.8 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

NONE

Integrity Impact

HIGH

Availability Impact

NONE

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:H/A:N

7 High

AI Score

Confidence

High

0.002 Low

EPSS

Percentile

54.5%

JSON

BIND 9.11.0 -> 9.11.36 9.12.0 -> 9.16.26 9.17.0 -> 9.18.0 BIND Supported Preview Editions: 9.11.4-S1 -> 9.11.36-S1 9.16.8-S1 -> 9.16.26-S1 Versions of BIND 9 earlier than those shown - back to 9.1.0, including Supported Preview Editions - are also believed to be affected but have not been tested as they are EOL. The cache could become poisoned with incorrect records leading to queries being made to the wrong servers, which might also result in false information being returned to clients.

CNA Affected

[
  {
    "vendor": "ISC",
    "product": "BIND",
    "versions": [
      {
        "version": "Open Source Branch 9.11  9.11.0 through versions before 9.11.37",
        "status": "affected"
      },
      {
        "version": "Development Branch 9.17  BIND 9.17 all version",
        "status": "affected"
      },
      {
        "version": "Open Source Branch 9.12-16  9.12.0 through versions before 9.16.27",
        "status": "affected"
      },
      {
        "version": "Open Source Branch 9.18 9.18.0",
        "status": "affected"
      },
      {
        "version": "Supported Preview Branch 9.11-S 9.11.0-S through versions before 9.11.37-S",
        "status": "affected"
      },
      {
        "version": "Supported Preview Branch 9.16-S  9.16.0-S through versions before 9.16.27-S",
        "status": "affected"
      }
    ]
  }
]

References

cert-portal.siemens.com/productcert/pdf/ssa-637483.pdf

kb.isc.org/v1/docs/cve-2021-25220

lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2SXT7247QTKNBQ67MNRGZD23ADXU6E5U/

lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5VX3I2U3ICOIEI5Y7OYA6CHOLFMNH3YQ/

lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/API7U5E7SX7BAAVFNW366FFJGD6NZZKV/

lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DE3UAVCPUMAKG27ZL5YXSP2C3RIOW3JZ/

lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NYD7US4HZRFUGAJ66ZTHFBYVP5N3OQBY/

security.gentoo.org/glsa/202210-25

security.netapp.com/advisory/ntap-20220408-0001/

supportportal.juniper.net/s/article/2022-10-Security-Bulletin-Junos-OS-SRX-Series-Cache-poisoning-vulnerability-in-BIND-used-by-DNS-Proxy-CVE-2021-25220?language=en_US