A vulnerability has been reported in SILC Client and SILC Toolkit, which potentially can be exploited by malicious people to cause a DoS (Denial of Service) or compromise a vulnerable system.
The vulnerability is caused due to a boundary error within the handling of "NICK_CHANGE" notifications in lib/silcclient/client_notify.c. This can be exploited to cause a buffer overflow by changing a specially crafted nickname in a channel.
The vulnerability is reported in versions prior to SILC Toolkit and SILC Client 1.1.2.
Solution: Update to SILC Toolkit and SILC Client 1.1.2.
Provided and/or discovered by: Reported by the vendor.
Original Advisory: http://silcnet.org/docs/changelog/changes.txt
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Subject: SILC Client and SILC Toolkit "NICK_CHANGE" Buffer Overflow
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