Vulnerability Details : CVE-2019-16254

Ruby through 2.4.7, 2.5.x through 2.5.6, and 2.6.x through 2.6.4 allows HTTP Response Splitting. If a program using WEBrick inserts untrusted input into the response header, an attacker can exploit it to insert a newline character to split a header, and inject malicious content to deceive clients. NOTE: this issue exists because of an incomplete fix for CVE-2017-17742, which addressed the CRLF vector, but did not address an isolated CR or an isolated LF.
Published 2019-11-26 18:15:15
Updated 2023-04-30 23:15:45
Source MITRE
View at NVD,   CVE.org

Products affected by CVE-2019-16254

Threat overview for CVE-2019-16254

Top countries where our scanners detected CVE-2019-16254
Top open port discovered on systems with this issue 80
IPs affected by CVE-2019-16254 4,511
Threat actors abusing to this issue? Yes
Find out if you* are affected by CVE-2019-16254!
*Directly or indirectly through your vendors, service providers and 3rd parties. Powered by attack surface intelligence from SecurityScorecard.

Exploit prediction scoring system (EPSS) score for CVE-2019-16254

EPSS FAQ
0.78%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 81 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2019-16254

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:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
3.9
1.4
 NIST

CWE ids for CVE-2019-16254

References for CVE-2019-16254

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