CVE-2023-39326
Apache HTTP Chunk Extension Data Inflation Memory Exhaustion Vulnerability
Description
A malicious HTTP sender can use chunk extensions to cause a receiver reading from a request or response body to read many more bytes from the network than are in the body. A malicious HTTP client can further exploit this to cause a server to automatically read a large amount of data (up to about 1GiB) when a handler fails to read the entire body of a request. Chunk extensions are a little-used HTTP feature which permit including additional metadata in a request or response body sent using the chunked encoding. The net/http chunked encoding reader discards this metadata. A sender can exploit this by inserting a large metadata segment with each byte transferred. The chunk reader now produces an error if the ratio of real body to encoded bytes grows too small.
INFO
Published Date :
Dec. 6, 2023, 5:15 p.m.
Last Modified :
Jan. 20, 2024, 4:15 a.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
1.4
Exploitability Score :
3.9
Public PoC/Exploit Available at Github
CVE-2023-39326 has a 2 public PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2023-39326.
| URL | Resource |
|---|---|
| https://go.dev/cl/547335 | Patch |
| https://go.dev/issue/64433 | Issue Tracking Patch Vendor Advisory |
| https://groups.google.com/g/golang-dev/c/6ypN5EjibjM/m/KmLVYH_uAgAJ | Mailing List Vendor Advisory |
| https://lists.fedoraproject.org/archives/list/[email protected]/message/UIU6HOGV6RRIKWM57LOXQA75BGZSIH6G/ | |
| https://pkg.go.dev/vuln/GO-2023-2382 | Patch Vendor Advisory |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
None
None
Dockerfile Go
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2023-39326 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2023-39326 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
CVE Modified by [email protected]
Jan. 20, 2024
Action Type Old Value New Value Added Reference Go Project https://lists.fedoraproject.org/archives/list/[email protected]/message/UIU6HOGV6RRIKWM57LOXQA75BGZSIH6G/ [No types assigned] -
Initial Analysis by [email protected]
Dec. 12, 2023
Action Type Old Value New Value Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N Changed Reference Type https://go.dev/cl/547335 No Types Assigned https://go.dev/cl/547335 Patch Changed Reference Type https://go.dev/issue/64433 No Types Assigned https://go.dev/issue/64433 Issue Tracking, Patch, Vendor Advisory Changed Reference Type https://groups.google.com/g/golang-dev/c/6ypN5EjibjM/m/KmLVYH_uAgAJ No Types Assigned https://groups.google.com/g/golang-dev/c/6ypN5EjibjM/m/KmLVYH_uAgAJ Mailing List, Vendor Advisory Changed Reference Type https://pkg.go.dev/vuln/GO-2023-2382 No Types Assigned https://pkg.go.dev/vuln/GO-2023-2382 Patch, Vendor Advisory Added CWE NIST NVD-CWE-noinfo Added CPE Configuration OR *cpe:2.3:a:golang:go:*:*:*:*:*:*:*:* versions up to (excluding) 1.20.12 *cpe:2.3:a:golang:go:*:*:*:*:*:*:*:* versions from (including) 1.21.0-0 up to (excluding) 1.21.5 -
CVE Received by [email protected]
Dec. 06, 2023
Action Type Old Value New Value Added Description A malicious HTTP sender can use chunk extensions to cause a receiver reading from a request or response body to read many more bytes from the network than are in the body. A malicious HTTP client can further exploit this to cause a server to automatically read a large amount of data (up to about 1GiB) when a handler fails to read the entire body of a request. Chunk extensions are a little-used HTTP feature which permit including additional metadata in a request or response body sent using the chunked encoding. The net/http chunked encoding reader discards this metadata. A sender can exploit this by inserting a large metadata segment with each byte transferred. The chunk reader now produces an error if the ratio of real body to encoded bytes grows too small. Added Reference Go Project https://go.dev/issue/64433 [No types assigned] Added Reference Go Project https://go.dev/cl/547335 [No types assigned] Added Reference Go Project https://groups.google.com/g/golang-dev/c/6ypN5EjibjM/m/KmLVYH_uAgAJ [No types assigned] Added Reference Go Project https://pkg.go.dev/vuln/GO-2023-2382 [No types assigned]
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2023-39326 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2023-39326
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.06 }} 0.01%
score
0.26560
percentile