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TITLE:
Motion "read_client()" Off-By-One Vulnerability

SECUNIA ADVISORY ID:
SA30544

VERIFY ADVISORY:
http://secunia.com/advisories/30544/

CRITICAL:
Moderately critical

IMPACT:
System access

WHERE:
>From remote

SOFTWARE:
Motion 3.x
http://secunia.com/product/19024/

DESCRIPTION:
Nico Golde has reported a vulnerability in Motion, which potentially
can be exploited by malicious people to compromise a vulnerable
system.

The vulnerability is caused due to an off-by-one error within the
"read_client()" function in webhttpd.c, can be exploited to cause a
stack-based buffer overflow with a zero-byte by sending an overly
long request to a vulnerable Motion HTTP control interface.

Successful exploitation may allow execution of arbitrary code but
requires that the HTTP Control interface is enabled.

The vulnerability is reported in 3.2.10 and prior.

SOLUTION:
Apply patch.

Version 3.2.9:
http://www.lavrsen.dk/twiki/pub/Motion/ReleaseNoteMotion3x2x9/webhttpd-security-video2-backport.diff

Version 3.2.10:
http://www.lavrsen.dk/twiki/pub/Motion/ReleaseNoteMotion3x2x10/webhttpd-security.diff

PROVIDED AND/OR DISCOVERED BY:
Nico Golde

ORIGINAL ADVISORY:
Debian Bug #484572:
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=484572

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About:
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