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IbmCVELIST:CVE-2021-20501

HistoryApr 21, 2021 - 12:05 p.m.

CVE-2021-20501

2021-04-2112:05:22

ibm

www.cve.org

ibm i

smtp

vulnerability

emails

local-domain

attackers

network

bandwidth

disk space

spam

x-force.

CVSS3

5.9

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C

AI Score

7.9

Confidence

High

EPSS

0.001

Percentile

47.8%

JSON

IBM i 7.1, 7.2, 7.3, and 7.4 SMTP allows a network attacker to send emails to non-existent local-domain recipients to the SMTP server, caused by using a non-default configuration. An attacker could exploit this vulnerability to consume unnecessary network bandwidth and disk space, and allow remote attackers to send spam email. IBM X-Force ID: 198056.

CNA Affected

[
  {
    "product": "i",
    "vendor": "IBM",
    "versions": [
      {
        "status": "affected",
        "version": "7.1"
      },
      {
        "status": "affected",
        "version": "7.2"
      },
      {
        "status": "affected",
        "version": "7.3"
      },
      {
        "status": "affected",
        "version": "7.4"
      }
    ]
  }
]

References

exchange.xforce.ibmcloud.com/vulnerabilities/198056

www.ibm.com/support/pages/node/6445505

CVSS3

5.9

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C

AI Score

7.9

Confidence

High

EPSS

0.001

Percentile

47.8%

JSON

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