Vulnerability in Cisco Email Security Appliance Firmware

CVE-2017-12309

A vulnerability in the Cisco Email Security Appliance (ESA) could allow an unauthenticated, remote attacker to conduct a HTTP response splitting attack. The vulnerability is due to the failure of the application or its environment to properly sanitize input values. An attacker could exploit this vulnerability by injecting malicious HTTP headers, controlling the response body, or splitting the response into multiple responses. An exploit could allow the attacker to perform cross-site scripting attacks, cross-user defacement, web cache poisoning, and similar exploits. Cisco Bug IDs: CSCvf16705.

EPSS: 0.017 (75.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2017-12309?
CVE-2017-12309 is a medium-severity vulnerability in Cisco Email Security Appliance Firmware, classified under HTTP Response Splitting. CVSS score: 5.3/10. Published 2017-11-16.
How severe is CVE-2017-12309?
Medium severity. CVSS v3 base score is 5.3 out of 10.