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https://issues.apache.org/jira/browse/HTTPCLIENT-1153?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13185226#comment-13185226
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Jon Moore commented on HTTPCLIENT-1153:
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@Sebb: I don't think this applies to us, as we're not using a HashMap. Rather,
I'm applying a hash function to map one set of values (the URLs the caching
layer uses as cache keys) to another set of values (keys short enough to fit in
the 250-byte constraint). The actual data structure (if any) that might be
affected here would be in memcached. However, I'm planning on using a
cryptographic hash algorithm, so it's unlikely to be subject to the types of
the attacks described in the vulnerability (e.g. the very simple hash functions
commonly used for Object#hashCode()).
> org.apache.http.impl.client.cache.memcached.MemcachedHttpCacheStorage uses
> URL as cache key - shouldn't.
> --------------------------------------------------------------------------------------------------------
>
> Key: HTTPCLIENT-1153
> URL: https://issues.apache.org/jira/browse/HTTPCLIENT-1153
> Project: HttpComponents HttpClient
> Issue Type: Bug
> Components: HttpClient
> Affects Versions: 4.1.1, 4.1.2
> Reporter: Clinton Nielsen
> Assignee: Jon Moore
> Fix For: 4.1.3, 4.2 Alpha2
>
>
> Spy memcached has 250 defined as max key length:
> http://dustin.github.com/java-memcached-client/apidocs/constant-values.html#net.spy.memcached.MemcachedClientIF.MAX_KEY_LENGTH
> URLs can be (and often are) much longer than 250 characters.
> URLs should be hashed before being used as keys.
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