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Sybase PowerBuilder RSA Signature Forgery
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Secunia Advisory:
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SA22938
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Release Date:
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2006-11-17
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Last Update:
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2007-01-08
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Critical:
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Less critical
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Impact:
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Security Bypass
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Where:
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From remote
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Solution Status:
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Vendor Patch
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| Software: | Sybase PowerBuilder 10.x
Sybase PowerBuilder 9.x
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| | CVE reference: | CVE-2006-4339 (Secunia mirror)
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Description:
Sybase has acknowledged a vulnerability in PowerBuilder, which can be exploited by malicious people to bypass certain security restrictions.
The vulnerability is caused due to an error within the verification of certain signatures. If an RSA key with exponent 3 is used, it may be possible to forge a signature signed by that key.
The vulnerability is reported in versions 9.0x, 10.2.x, and 10.5.x.
Solution:
Do not use RSA keys with exponent 3.
Update to the latest version.
http://www.sybase.com/content/1047991..._Verification_Vulnerabilty_Impact.pdf
Provided and/or discovered by:
Reported by the vendor.
Changelog:
2007-01-08: Updated "Solution Status" and "Solution" sections to reflect fix information.
Original Advisory:
http://www.sybase.com/detail?id=1047991
Other References:
SA21709:
http://secunia.com/advisories/21709/
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Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.
Secunia collects, validates, and verifies all vulnerability reports issued by security research groups, vendors, and others.
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