Secunia Security Advisory - Sybase has acknowledged a vulnerability in Sybase EAServer, which can be exploited by malicious people to bypass certain security restrictions.
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TITLE:
Sybase EAServer RSA Signature Forgery
SECUNIA ADVISORY ID:
SA22935
VERIFY ADVISORY:
https://secunia.com/advisories/22935/
CRITICAL:
Less critical
IMPACT:
Security Bypass
WHERE:
>From remote
SOFTWARE:
Sybase EAServer 5.x
https://secunia.com/product/5398/
Sybase EAServer 4.x
https://secunia.com/product/367/
Sybase EAServer 6.x
https://secunia.com/product/12638/
DESCRIPTION:
Sybase has acknowledged a vulnerability in Sybase EAServer, 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 version 5.0 for Windows, Solaris,
AIX, HP RISC, HP Itanium and Linux, version 5.1 for Windows and
Solaris, version 5.2 for Windows, Solaris, AIX, HP RISC, and Linux,
version 5.3 for Windows and Solaris, version 5.5 for Windows, and
version 6.0 for Windows and Solaris.
SOLUTION:
Do not use RSA keys with exponent 3.
PROVIDED AND/OR DISCOVERED BY:
Reported by the vendor.
ORIGINAL ADVISORY:
https://www.sybase.com/detail?id=1047991
OTHER REFERENCES:
SA21709:
https://secunia.com/advisories/21709/
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About:
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