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[Bug 53634] New: mod_cache returning HTTP 200 for nonexistent resources

 

 

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bugzilla at apache

Aug 1, 2012, 5:23 AM

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[Bug 53634] New: mod_cache returning HTTP 200 for nonexistent resources

https://issues.apache.org/bugzilla/show_bug.cgi?id=53634

Priority: P2
Bug ID: 53634
Assignee: bugs [at] httpd
Summary: mod_cache returning HTTP 200 for nonexistent resources
Severity: normal
Classification: Unclassified
OS: Linux
Reporter: glen.birnie [at] bbc
Hardware: Other
Status: NEW
Version: 2.2.22
Component: mod_cache
Product: Apache httpd-2

IF a 404 ErrorDocument is configured within a URL range where mod_cache is
enabled
AND the error document was previously requested (and cached by mod_disk_cache)
THEN all subsequent responses to nonexistent resources return HTTP 200 instead
of the expected HTTP 404 response.

Example configuration:

###

LoadModule cache_module modules/mod_cache.so
LoadModule disk_cache_module modules/mod_disk_cache.so

CacheRoot /cache-root
CacheDirLevels 3
CacheDirLength 1
CacheMinFileSize 0
CacheMaxFileSize 1000000

CacheEnable disk /

ErrorDocument 404 /error.jpg

###

Assumptions:

/cache-root exists and is writable by httpd, initially empty contents.
/error.jpg exists within the document root directory.

To reproduce:

request "/error.jpg"
request any nonexistent resource, say, "/nonexistent".

NB Bug 49996 describes a very similar issue involving mod_proxy.

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