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https://issues.apache.org/jira/browse/HTTPCLIENT-1053?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Oleg Kalnichevski resolved HTTPCLIENT-1053.
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Resolution: Fixed
Patch checked in.
Oleg
> Security issue - DigestScheme uses constant nonce count value
> -------------------------------------------------------------
>
> Key: HTTPCLIENT-1053
> URL: https://issues.apache.org/jira/browse/HTTPCLIENT-1053
> Project: HttpComponents HttpClient
> Issue Type: Bug
> Components: HttpAuth, HttpClient
> Affects Versions: 4.1 Final
> Environment: All configurations using HTTP Digest Scheme for
> authentication
> Reporter: F Carlsen
> Labels: security
> Fix For: 4.2 Final
>
> Attachments: HTTPCLIENT-1053.patch
>
>
> The nonce count value in DigestScheme is static (set to 00000001) and never
> changes. (also seen as comment in said file).
> This means that it fails against servers that correctly detect
> man-in-the-middle or replay attacks, leading to additional 401 requests
> (every second time), or such servers must be configured to turn such checks
> off (which is either poor security or poor for performance).
> I suggest that at minimum, this count is incremented for every call to
> DigestScheme#createDigest. It should also be an instance variable instead of
> a static, as it really relates to the challenge (assuming cases where
> instances are cached for reuse). AtomicInteger is a good choice for
> implementing this counter.
> See RFC 2617 chapters 3.2.2 and 3.2.3
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