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cveIscCVE-2020-8620
HistoryAug 21, 2020 - 9:15 p.m.

CVE-2020-8620

2020-08-2121:15:12
CWE-617
isc
web.nvd.nist.gov
297
3
bind
cve-2020-8620
security
vulnerability
assertion failure
tcp connection
server exit

CVSS2

5

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:N/I:N/A:P

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

AI Score

7.3

Confidence

High

EPSS

0.02

Percentile

89.0%

In BIND 9.15.6 -> 9.16.5, 9.17.0 -> 9.17.3, An attacker who can establish a TCP connection with the server and send data on that connection can exploit this to trigger the assertion failure, causing the server to exit.

Affected configurations

Nvd
Node
iscbindRange9.15.69.16.5
OR
iscbindRange9.17.09.17.3
Node
iscbindMatch9.9.12s1supported_preview
OR
iscbindMatch9.9.13s1supported_preview
OR
iscbindMatch9.11.3s1supported_preview
OR
iscbindMatch9.11.21s1supported_preview
Node
opensuseleapMatch15.1
OR
opensuseleapMatch15.2
Node
netappsteelstore_cloud_integrated_storageMatch-
Node
canonicalubuntu_linuxMatch12.04lts
OR
canonicalubuntu_linuxMatch16.04esm
OR
canonicalubuntu_linuxMatch18.04lts
VendorProductVersionCPE
iscbind*cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:*
iscbind9.9.12cpe:2.3:a:isc:bind:9.9.12:s1:*:*:supported_preview:*:*:*
iscbind9.9.13cpe:2.3:a:isc:bind:9.9.13:s1:*:*:supported_preview:*:*:*
iscbind9.11.3cpe:2.3:a:isc:bind:9.11.3:s1:*:*:supported_preview:*:*:*
iscbind9.11.21cpe:2.3:a:isc:bind:9.11.21:s1:*:*:supported_preview:*:*:*
opensuseleap15.1cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*
opensuseleap15.2cpe:2.3:o:opensuse:leap:15.2:*:*:*:*:*:*:*
netappsteelstore_cloud_integrated_storage-cpe:2.3:a:netapp:steelstore_cloud_integrated_storage:-:*:*:*:*:*:*:*
canonicalubuntu_linux12.04cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:lts:*:*:*
canonicalubuntu_linux16.04cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:*
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CNA Affected

[
  {
    "product": "BIND9",
    "vendor": "ISC",
    "versions": [
      {
        "changes": [
          {
            "at": "9.16.6",
            "status": "unaffected"
          },
          {
            "at": "9.17.0",
            "status": "affected"
          },
          {
            "at": "9.17.4",
            "status": "unaffected"
          }
        ],
        "lessThan": "*",
        "status": "affected",
        "version": "9.15.6",
        "versionType": "custom"
      }
    ]
  }
]

Social References

More

CVSS2

5

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:N/I:N/A:P

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

AI Score

7.3

Confidence

High

EPSS

0.02

Percentile

89.0%