Lucene search

CiscoCVE-2019-1955

HistoryAug 08, 2019 - 8:15 a.m.

CVE-2019-1955

2019-08-0808:15:12

CWE-20

cisco

web.nvd.nist.gov

cisco

asyncos

software

spf

bypass

vulnerability

cisco email security appliances

esa

nvd

cve-2019-1955

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

7.6

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 Appliances (ESA) could allow an unauthenticated, remote attacker to bypass configured user filters on the device. The vulnerability is due to incomplete input and validation checking mechanisms for certain SPF messages that are sent to an affected device. An attacker could exploit this vulnerability by sending a customized SPF packet to an affected device. A successful exploit could allow the attacker to bypass the header filters that are configured for the affected device, which could allow malicious content to pass through the device.

Affected configurations

Nvd

Node

ciscoemail_security_appliance_firmwareRange<4.0mr1

ciscoemail_security_appliance_firmwareMatch12.0

VendorProductVersionCPE
ciscoemail_security_appliance_firmware*cpe:2.3:o:cisco:email_security_appliance_firmware:*:*:*:*:*:*:*:*
ciscoemail_security_appliance_firmware12.0cpe:2.3:o:cisco:email_security_appliance_firmware:12.0:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
cisco	email_security_appliance_firmware	*	cpe:2.3:o:cisco:email_security_appliance_firmware::::::::
cisco	email_security_appliance_firmware	12.0	cpe:2.3:o:cisco:email_security_appliance_firmware:12.0:::::::*

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-20190807-esm-inject

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

7.6

Confidence

High

EPSS

0.001

Percentile

49.9%

JSON

Related for CVE-2019-1955