PT-2019-6158 · Netty+2 · Netty+2
Phunt
·
Published
2019-12-09
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Updated
2024-09-06
·
CVE-2019-20445
CVSS v3.1
9.1
Critical
| Vector | AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N |
Name of the Vulnerable Software and Affected Versions
Netty versions prior to 4.1.44
Description
The issue is related to a flaw in the interpretation of HTTP requests in the HttpObjectDecoder.java component of the Netty network programming tool. This flaw can be exploited by a remote attacker to access and compromise confidential data. The vulnerability allows a Content-Length header to be accompanied by a second Content-Length header, or by a Transfer-Encoding header.
Recommendations
For versions prior to 4.1.44, update to version 4.1.44 or later to resolve the issue. As a temporary workaround, consider restricting access to the
HttpObjectDecoder.java component until a patch is applied. Avoid using the Content-Length header in conjunction with the Transfer-Encoding header in the affected API endpoint until the issue is resolved.Exploit
Fix
HTTP Request/Response Smuggling
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Weakness Enumeration
Related Identifiers
Affected Products
Astra Linux
Netty
Ubuntu