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CiscoCVE-2019-12706

HistoryOct 02, 2019 - 7:15 p.m.

CVE-2019-12706

2019-10-0219:15:13

CWE-20

cisco

web.nvd.nist.gov

cve

2019

12706

cisco

email security appliance

spf

bypass

vulnerability

nvd

remote attacker

validation error

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

NONE

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

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

HIGH

Availability Impact

NONE

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

AI Score

7.5

Confidence

High

EPSS

0.001

Percentile

49.9%

JSON

A vulnerability in the Sender Policy Framework (SPF) functionality of Cisco AsyncOS Software for Cisco Email Security Appliance (ESA) could allow an unauthenticated, remote attacker to bypass the configured user filters on an affected device. The vulnerability exists because the affected software insufficiently validates certain incoming SPF messages. An attacker could exploit this vulnerability by sending a custom SPF packet to an affected device. A successful exploit could allow the attacker to bypass the configured header filters, which could allow malicious content to pass through the device.

Affected configurations

Nvd

Node

ciscoemail_security_appliance_firmwareRange<13.5.0

VendorProductVersionCPE
ciscoemail_security_appliance_firmware*cpe:2.3:o:cisco:email_security_appliance_firmware:*:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
cisco	email_security_appliance_firmware	*	cpe:2.3:o:cisco:email_security_appliance_firmware::::::::

CNA Affected

[
  {
    "product": "Cisco Email Security Appliance (ESA)",
    "vendor": "Cisco",
    "versions": [
      {
        "lessThan": "n/a",
        "status": "affected",
        "version": "unspecified",
        "versionType": "custom"
      }
    ]
  }
]

References

tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20191002-esa-bypass

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

NONE

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

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

HIGH

Availability Impact

NONE

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

AI Score

7.5

Confidence

High

EPSS

0.001

Percentile

49.9%

JSON

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