CVE-2023-38697

Source
https://nvd.nist.gov/vuln/detail/CVE-2023-38697
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-38697.json
Aliases
Published
2023-08-04T18:15:15Z
Modified
2023-11-29T10:10:45.672045Z
Details

protocol-http1 provides a low-level implementation of the HTTP/1 protocol. RFC 9112 Section 7.1 defined the format of chunk size, chunk data and chunk extension. The value of Content-Length header should be a string of 0-9 digits, the chunk size should be a string of hex digits and should split from chunk data using CRLF, and the chunk extension shouldn't contain any invisible character. However, Falcon has following behaviors while disobey the corresponding RFCs: accepting Content-Length header values that have + prefix, accepting Content-Length header values that written in hexadecimal with 0x prefix, accepting 0x and + prefixed chunk size, and accepting LF in chunk extension. This behavior can lead to desync when forwarding through multiple HTTP parsers, potentially results in HTTP request smuggling and firewall bypassing. This issue is fixed in protocol-http1 v0.15.1. There are no known workarounds.

References

Affected packages

Git / github.com/socketry/protocol-http1

Affected ranges

Type
GIT
Repo
https://github.com/socketry/protocol-http1
Events
Introduced
0The exact introduced commit is unknown
Fixed

Affected versions

v0.*

v0.1.0
v0.10.0
v0.10.1
v0.10.2
v0.10.3
v0.11.0
v0.11.1
v0.12.0
v0.13.0
v0.13.1
v0.13.2
v0.14.0
v0.14.1
v0.14.2
v0.14.3
v0.14.4
v0.14.6
v0.15.0
v0.2.0
v0.3.0
v0.4.0
v0.4.1
v0.5.0
v0.6.0
v0.7.0
v0.8.0
v0.8.1
v0.8.2
v0.8.3
v0.9.0