CVE-2017-6508 - Improper Neutralization of CRLF Sequences ('CRLF Injection')

Severity

43%

Complexity

86%

Confidentiality

48%

CRLF injection vulnerability in the url_parse function in url.c in Wget through 1.19.1 allows remote attackers to inject arbitrary HTTP headers via CRLF sequences in the host subcomponent of a URL.

CRLF injection vulnerability in the url_parse function in url.c in Wget through 1.19.1 allows remote attackers to inject arbitrary HTTP headers via CRLF sequences in the host subcomponent of a URL.

CVSS 3.0 Base Score 6.1. CVSS Attack Vector: network. CVSS Attack Complexity: low. CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N).

CVSS 2.0 Base Score 4.3. CVSS Attack Vector: network. CVSS Attack Complexity: medium. CVSS Vector: (AV:N/AC:M/Au:N/C:N/I:P/A:N).

Demo Examples

Improper Neutralization of CRLF Sequences ('CRLF Injection')

CWE-93

If user input data that eventually makes it to a log message isn't checked for CRLF characters, it may be possible for an attacker to forge entries in a log file.


               
logger.info("User's street address: " + request.getParameter("streetAddress"));

Overview

First reported 7 years ago

2017-03-07 08:59:00

Last updated 7 years ago

2017-07-01 01:30:00

Affected Software

GNU wget

References

http://git.savannah.gnu.org/cgit/wget.git/commit/?id=4d729e322fae359a1aefaafec1144764a54e8ad4

Patch

http://lists.gnu.org/archive/html/bug-wget/2017-03/msg00018.html

Exploit, Mailing List

96877

GLSA-201706-16

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