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TITLE:
SILC Toolkit / SILC Server Incorrect Format Specifier Memory
Corruption

SECUNIA ADVISORY ID:
SA36625

VERIFY ADVISORY:
http://secunia.com/advisories/36625/

DESCRIPTION:
Some vulnerabilities have been reported in SILC Toolkit and SILC
Server, which can be exploited by malicious people to cause a DoS
(Denial of Service) and potentially compromise a vulnerable system.

1) An incorrect format specifier within the "silc_asn1_encoder()"
function in lib/silcasn1/silcasn1_encode.c can be exploited to cause
a memory corruption.

Successful exploitation requires a 64bit system.

2) An incorrect format specifier within the
"silc_http_server_parse()" function in lib/silchttp/silchttpserver.c
can be exploited to cause a memory corruption by sending specially
crafted requests to a vulnerable HTTP server.

Successful exploitation requires a 64bit system and that e.g. the
internal HTTP server for statistics is enabled.

SOLUTION:
Update to SILC Toolkit 1.1.10 and SILC Server 1.1.17.
http://silcnet.org/software/download/

PROVIDED AND/OR DISCOVERED BY:
Reported by the vendor.

ORIGINAL ADVISORY:
http://git.silcnet.org/gitweb/?p=silc.git;a=commitdiff;h=ebfe5dc8641467efea3506a4797a2b1260b2da55
http://git.silcnet.org/gitweb/?p=silc.git;a=commitdiff;h=b2b91b074b6701455053425b583a6fd0beedc8cc

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