CVE-2019-12706 Cisco Email Security Appliance Filter Bypass Vulnerability

2019-10-0219:06:50

CWE-20

cisco

www.cve.org

CVSS3

6.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

NONE

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

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.

CNA Affected

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