XChat: malformed dcc send request denial of service

XChat: malformed dcc send request denial of service A bug in XChat could allow malformed dcc send requests to cause a denial of service. xchat 2003-12-14 2003-12-14 35623 remote 2.0.6-r1 2.0.6

XChat is a multiplatform IRC client.

There is a remotely exploitable bug in XChat 2.0.6 that could lead to a denial of service attack. Gentoo wishes to thank lloydbates for discovering this bug, as well as jcdutton and rac for submitting patches to fix the bug.

A malformed DCC packet sent by a remote attacker can cause XChat to crash.

There is no known workaround at this time.

For Gentoo users, xchat-2.0.6 was marked ~arch (unstable) for most architectures. Since it was never marked as stable in the portage tree, only xchat users who have explictly added the unstable keyword to ACCEPT_KEYWORDS are affected. Users may updated affected machines to the patched version of xchat using the following commands:


    # emerge sync
    # emerge -pv '>=net-irc/xchat-2.0.6-r1'
    # emerge '>=net-irc/xchat-2.0.6-r1'
    # emerge clean

This assumes that users are running with ACCEPT_KEYWORDS enabled for their architecture.

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