Nagesh Arkalgud created HTTPCLIENT-2018:
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Summary: Improper input validation vulnerability in commons-codec
version used by latest HttpClient
Key: HTTPCLIENT-2018
URL: https://issues.apache.org/jira/browse/HTTPCLIENT-2018
Project: HttpComponents HttpClient
Issue Type: Bug
Components: HttpClient (async), HttpClient (classic)
Affects Versions: 5.0 Beta6, 4.5.10
Reporter: Nagesh Arkalgud
*Explanation*
The Apache {{commons-codec}} package contains an Improper Input Validation
vulnerability. The {{decode()}} method in the {{Base32}}, {{Base64}}, and
{{BCodec}} classes fails to reject malformed Base32 and Base64 encoded strings
and consequently decodes them into arbitrary values. A remote attacker can
leverage this vulnerability to potentially tunnel additional information via
seemingly legitimate Base32 or Base64 encoded strings.
*Root Cause*
commons-codec-1.11.jar *<=* org/apache/commons/codec/binary/Base64.class :
[1.5.RC1, 1.13)
commons-codec-1.11.jar *<=* org/apache/commons/codec/net/BCodec.class :
[1.5.RC1, 1.13)
commons-codec-1.11.jar *<=* org/apache/commons/codec/binary/Base32.class :
[1.5.RC1, 1.13)
*Advisories*
Project: https://issues.apache.org/jira/browse/CODEC-134
*Solution*
Please update commons-codec to 1.13 to fix this issue.
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