Vulnerability Details : CVE-2019-1905
A vulnerability in the GZIP decompression engine 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 validation of GZIP-formatted files. An attacker could exploit this vulnerability by sending a malicious file inside a crafted GZIP-compressed file. 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-2019-1905
- cpe:2.3:a:cisco:email_security_appliance:12.0.0:*:*:*:*:*:*:*
- cpe:2.3:a:cisco:email_security_appliance:11.1.2:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2019-1905
0.15%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 32 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2019-1905
| 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 | |
|
5.8
|
MEDIUM | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N |
3.9
|
1.4
|
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-2019-1905
-
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-2019-1905
-
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190619-esa-bypass
Cisco Email Security Appliance GZIP Content Filter Bypass VulnerabilityVendor Advisory
-
http://www.securityfocus.com/bid/108856
Cisco AsyncOS Software CVE-2019-1905 Remote Security Bypass VulnerabilityThird Party Advisory;VDB Entry
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