Vulnerability Details : CVE-2019-1831
A vulnerability in the email message scanning of Cisco AsyncOS Software for Cisco Email Security Appliance (ESA) could allow an unauthenticated, remote attacker to bypass configured content filters on the device. The vulnerability is due to improper input validation of the email body. An attacker could exploit this vulnerability by inserting specific character strings in the message. A successful exploit could allow the attacker to bypass configured content filters that would normally drop the email.
Vulnerability category: Input validation
Products affected by CVE-2019-1831
- cpe:2.3:a:cisco:email_security_appliance:11.1.2-023:*:*:*:*:*:*:*
- cpe:2.3:a:cisco:email_security_appliance:12.0.0-208:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2019-1831
0.16%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 34 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2019-1831
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
5.0
|
MEDIUM | AV:N/AC:L/Au:N/C:N/I:P/A:N |
10.0
|
2.9
|
NIST | |
|
5.3
|
MEDIUM | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N |
3.9
|
1.4
|
NIST | |
|
5.8
|
MEDIUM | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N |
3.9
|
1.4
|
Cisco Systems, Inc. |
CWE ids for CVE-2019-1831
-
The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.Assigned by:
- nvd@nist.gov (Primary)
- ykramarz@cisco.com (Secondary)
References for CVE-2019-1831
-
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190417-esa-filter-bypass
Cisco Email Security Appliance Content Filter Bypass VulnerabilityVendor Advisory
-
http://www.securityfocus.com/bid/108021
Cisco Email Security Appliance CVE-2019-1831 Remote Security Bypass VulnerabilityThird Party Advisory;VDB Entry
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