Bug 205181 - CVE-2006-4339 RSA signature forgery
CVE-2006-4339 RSA signature forgery
Status: CLOSED WONTFIX
Product: Stronghold Cross Platform
Classification: Retired
Component: openssl (Show other bugs)
4.0
All Linux
medium Severity medium
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Assigned To: Mark J. Cox (Product Security)
Stronghold Engineering List
reported=20060905,source=openssl,publ...
: Security
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Reported: 2006-09-05 05:47 EDT by Mark J. Cox (Product Security)
Modified: 2007-04-18 13:48 EDT (History)
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Doc Type: Bug Fix
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Last Closed: 2006-09-05 10:01:12 EDT
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Description Mark J. Cox (Product Security) 2006-09-05 05:47:20 EDT
+++ This bug was initially created as a clone of Bug #205180 +++

Daniel Bleichenbacher recently described an attack on PKCS #1 v1.5
signatures. Where an RSA key with exponent 3 is used it may be possible
for an attacker to forge a PKCS #1 v1.5 signature that would be incorrectly
verified by implementations that do not check for excess data in the RSA
exponentiation result of the signature.

The Google Security Team discovered that OpenSSL is vulnerable to this
attack. This issue affects applications that use OpenSSL to verify X.509
certificates as well as other uses of PKCS #1 v1.5. (CVE-2006-4339) 

http://www.openssl.org/news/secadv_20060905.txt
Comment 1 Mark J. Cox (Product Security) 2006-09-05 10:01:12 EDT
Errata support for SH4 cross-platform ented.

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