CVE-2019-15259: cisco cisco unified contact center express HTTP Request/Response Splitting
Vulnerability summary
CVE-2019-15259 is a medium (CVSS 6.1) HTTP Request/Response Splitting vulnerability in cisco cisco unified contact center express. EPSS estimates a 1.06% chance of exploitation in the next 30 days, higher than 63.8% of scored vulnerabilities.
Timeline
- 02-10-2019PublishedVulnerability first disclosed.
- 21-11-2024Last modifiedVulnerability information updated.
Description
A vulnerability in Cisco Unified Contact Center Express (UCCX) Software could allow an unauthenticated, remote attacker to conduct an HTTP response splitting attack. The vulnerability is due to insufficient input validation of some parameters that are passed to the web server of the affected system. An attacker could exploit this vulnerability by convincing a user to follow a malicious link or by intercepting a user request on an affected device. A successful exploit could allow the attacker to perform cross-site scripting attacks, web cache poisoning, access sensitive browser-based information, and similar exploits.
CVSS metrics
4 scores · 2 sources · 3 versions- NVDNIST6.1MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
EPSS trend
Probability
1.06%
Chance of exploitation in the next 30 days
Percentile
64%
Versus all other CVEs
30-day change
0.00 pp
From 1.06% on 18-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root cause- CWE-113Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP Request/Response Splitting')The product receives data from an HTTP agent/component (e.g., web server, proxy, browser, etc.), but it does not neutralize or incorrectly neutralizes CR and LF characters before the data is included in outgoing HTTP headers.
- CWE-74Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')The product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component.
Affected systems
Cisco2 products
- cisco unified contact center express≥ unspecified, < n/a
- unified_contact_center_express< 11.6\(2\) | 12.0.1
1 vendor · 2 products
References
1 links- tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20191002-uccx-httpVendor AdvisoryX Refsource CISCO