CVE-2019-16785 HTTP Request Smuggling: LF vs CRLF handling in Waitress

Waitress through version 1.3.1 implemented a "MAY" part of the RFC7230 which states: "Although the line terminator for the start-line and header fields is the sequence CRLF, a recipient MAY recognize a single LF as a line terminator and ignore any preceding CR." Unfortunately if a front-end serve...

CVE-2019-16785

Summary: The vulnerability CVE-2019-16785 affects Waitress (Python WSGI server) up to v1.3.1. It relates to RFC7230’s line-termination rule: Waitress may treat messages inconsistently when a proxy uses LF vs CRLF, enabling HTTP request smuggling/splitting. Impact is the front-end and back-end par...

CVE-2019-16785

Waitress through version 1.3.1 implemented a "MAY" part of the RFC7230 which states: "Although the line terminator for the start-line and header fields is the sequence CRLF, a recipient MAY recognize a single LF as a line terminator and ignore any preceding CR." Unfortunately if a front-end serve...

CVE-2019-16785

Waitress through version 1.3.1 implemented a "MAY" part of the RFC7230 which states: "Although the line terminator for the start-line and header fields is the sequence CRLF, a recipient MAY recognize a single LF as a line terminator and ignore any preceding CR." Unfortunately if a front-end serve...

CVE-2019-16785

Waitress through version 1.3.1 implemented a "MAY" part of the RFC7230 which states: "Although the line terminator for the start-line and header fields is the sequence CRLF, a recipient MAY recognize a single LF as a line terminator and ignore any preceding CR." Unfortunately if a front-end serve...

CVE-2019-16786

Waitress through version 1.3.1 would parse the Transfer-Encoding header and only look for a single string value, if that value was not chunked it would fall through and use the Content-Length header instead. According to the HTTP standard Transfer-Encoding should be a comma separated list, with t...

CVE-2019-16786 HTTP Request Smuggling: Invalid Transfer-Encoding in Waitress

Waitress through version 1.3.1 would parse the Transfer-Encoding header and only look for a single string value, if that value was not chunked it would fall through and use the Content-Length header instead. According to the HTTP standard Transfer-Encoding should be a comma separated list, with t...

Security Bulletin: IBM Transparent Cloud Tiering is affected by Netty vulnerability

Summary The Netty library is vulnerable affecting the IBM Transparent Cloud Tiering. IBM Transparent Cloud Tiering fixed the below CVE. Vulnerability Details CVEID: CVE-2019-16869 DESCRIPTION: Netty before 4.1.42.Final mishandles whitespace before the colon in HTTP headers such as a...

PT-2019-20153

Name of the Vulnerable Software and Affected Versions Waitress versions 1.3.1 and earlier Description The issue arises from the implementation of a part of the RFC7230 in Waitress, where it recognizes a single LF as a line terminator and ignores any preceding CR. This can cause a discrepancy in h...

PT-2019-20154

Name of the Vulnerable Software and Affected Versions Waitress versions prior to 1.4.0 Description The issue arises from the incorrect parsing of the Transfer-Encoding header, which should be a comma-separated list with the inner-most encoding first, followed by any further transfer codings, endi...

CVE-2019-16785: Inconsistent Interpretation of HTTP Requests

Waitress through version 1.3.1 implemented a "MAY" part of the RFC7230 which states: "Although the line terminator for the start-line and header fields is the sequence CRLF, a recipient MAY recognize a single LF as a line terminator and ignore any preceding CR." Unfortunately if a front-end serve...

CVE-2019-16786: Inconsistent Interpretation of HTTP Requests

Waitress through version 1.3.1 would parse the Transfer-Encoding header and only look for a single string value, if that value was not chunked it would fall through and use the Content-Length header instead. According to the HTTP standard Transfer-Encoding should be a comma separated list, with t...

PT-2019-6231 · Waitress +3 · Waitress +3

Name of the Vulnerable Software and Affected Versions: Waitress versions 1.3.1 and earlier Description: The issue arises from Waitress implementing a "MAY" part of the RFC7230, which allows recognizing a single LF as a line terminator and ignoring any preceding CR. This can lead to a potential fo...

PT-2019-6233 · Waitress +3 · Waitress +3

Name of the Vulnerable Software and Affected Versions: Waitress versions 1.3.1 and earlier Description: The issue is related to the incorrect handling of repeated Content-Length headers in Waitress, allowing request smuggling. If two Content-Length headers are sent in a single request, Waitress...

[SECURITY] [DLA 2028-1] squid3 security update

Package : squid3 Version : 3.4.8-6+deb8u9 CVE ID : CVE-2019-12526 CVE-2019-18677 CVE-2019-18678 CVE-2019-18679 It was found that Squid, a high-performance proxy caching server for web clients, has been affected by the following security vulnerabilities. CVE-2019-12526 URN response handling in Squ...

NGINX -- HTTP request smuggling

NGINX Team reports: NGINX before 1.17.7, with certain errorpage configurations, allows HTTP request smuggling, as demonstrated by the ability of an attacker to read unauthorized web pages in environments where NGINX is being fronted by a load balancer...

PT-2019-6161

Name of the Vulnerable Software and Affected Versions Netty version 4.1.43.Final Description The issue is related to HTTP Request Smuggling due to the mishandling of Transfer-Encoding whitespace and a later Content-Length header. This is a result of an incomplete fix for a previous issue. The...

PT-2020-19488

Name of the Vulnerable Software and Affected Versions Netty version 4.1.43.Final Description The issue allows HTTP Request Smuggling due to mishandling of Transfer-Encoding whitespace and a later Content-Length header. This is a result of an incomplete fix for a previous issue. Recommendations Fo...

EulerOS 2.0 SP5 : golang (EulerOS-SA-2019-2529)

According to the versions of the golang packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : - Go before 1.12.10 and 1.13.x before 1.13.1 allow HTTP Request Smuggling.CVE-2019-16276 - Go before 1.12.11 and 1.3.x before 1.13.2 can panic upo...

CVE-2019-18678

An issue was discovered in Squid 3.x and 4.x through 4.8. It allows attackers to smuggle HTTP requests through frontend software to a Squid instance that splits the HTTP Request pipeline differently. The resulting Response messages corrupt caches between a client and Squid with attacker-controlle...