cbcvebase.
CVE-2023-39326
published 2023-12-06

CVE-2023-39326: 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…

PriorityP428medium5.3CVSS 3.1
AVNACLPRNUINSUCLINAN
EPSS
1.21%
64.5th percentile
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.

Affected

19 ranges
VendorProductVersion rangeFixed in
debiangolang-1.15
debiangolang-1.19
go_standard_librarynet_http_internal< 1.20.121.20.12
go_standard_librarynet_http_internal>= 1.21.0-0 < 1.21.51.21.5
golanggo< 1.20.121.20.12
golanggo>= 1.21.0-0 < 1.21.51.21.5
msrcazl3_gcc_13.2.0-7_on_azure_linux_3.0
msrcazl3_golang_1.24.3-1_on_azure_linux_3.0
msrcazl3_python-tensorboard_2.16.2-6_on_azure_linux_3.0
msrcazl3_tensorflow_2.16.1-9_on_azure_linux_3.0
msrccbl2_gcc_11.2.0-8_on_cbl_mariner_2.0
msrccbl2_golang_1.17.13-2_on_cbl_mariner_2.0
msrccbl2_golang_1.18.8-7_on_cbl_mariner_2.0
msrccbl2_golang_1.21.5-1_on_cbl_mariner_2.0
msrccbl2_golang_1.21.6-1_on_cbl_mariner_2.0
msrccbl2_msft-golang_1.21.5-1_on_cbl_mariner_2.0
msrccbl2_python-tensorboard_2.11.0-3_on_cbl_mariner_2.0
msrccbl2_tensorflow_2.11.1-2_on_cbl_mariner_2.0
paloaltopan-os

CVSS provenance

nvdv3.15.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
osv6.1MEDIUM
vendor_ubuntu6.1MEDIUM
vendor_debian5.3MEDIUM
vendor_msrc5.3MEDIUM
vendor_redhat5.3MEDIUM
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