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.

Published · last modified .

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.

EPSS exploit prediction

EPSS: 0.017 (76.3th percentile), scored .

Low probability of exploitation in the next 30 days, but still tracked. 76th percentile — 76.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2017-12309: held from 0.019 to 0.017.

EPSS over last 30 days · oldest: 0.019 · newest: 0.017 · change: -0.002

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.