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Code Issues 32 Releases Wiki Activity

Fixed CVE-2023-23969 -- Prevented DoS with pathological values for Accept-Language.

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The parsed values of Accept-Language headers are cached in order to
avoid repetitive parsing. This leads to a potential denial-of-service
vector via excessive memory usage if the raw value of Accept-Language
headers is very large.

Accept-Language headers are now limited to a maximum length in order
to avoid this issue.
This commit is contained in:
Nick Pope
2023-01-25 12:21:48 +01:00
committed by Mariusz Felisiak
parent 110b3b8356
commit 8c660fb592
5 changed files with 72 additions and 5 deletions
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10
docs/releases/3.2.17.txt
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@@ -6,4 +6,12 @@ Django 3.2.17 release notes
Django 3.2.17 fixes a security issue with severity "moderate" in 3.2.16.
...
CVE-2023-23969: Potential denial-of-service via ``Accept-Language`` headers
===========================================================================
The parsed values of ``Accept-Language`` headers are cached in order to avoid
repetitive parsing. This leads to a potential denial-of-service vector via
excessive memory usage if large header values are sent.
In order to avoid this vulnerability, the ``Accept-Language`` header is now
parsed up to a maximum length.