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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.

Impact

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.

Affected products

VendorProductAffected versions
Ruby-LangRuby
through 2.3.0
from 2.4.0 through 2.4.7
from 2.5.0 through 2.5.6
from 2.6.0 through 2.6.4
DebianDebian Linux
Version 8.0

Weakness classification

CWE-74

References