From: Secunia Security Advisories (sec-advsecunia.com)
Date: Fri Jun 20 2003 - 02:50:04 CDT

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TITLE:
webfs Request-URI Buffer Overflow Vulnerability

READ ONLINE:
http://www.secunia.com/advisories/9080/

CRITICAL:
Highly critical

IMPACT:
DoS, System access

WHERE:
From remote

OPERATING SYSTEM:

Debian GNU/Linux 3.0
Debian GNU/Linux unstable alias sid

SOFTWARE:
webfs 1.x

DESCRIPTION:
Debian has reported a vulnerability in webfs, which can be exploited
by malicious people to compromise a vulnerable system.

The vulnerability is caused due to a boundary error in the handling
of Request-URI. This can be exploited to cause a buffer overflow by
sending an overly long, specially crafted HTTP request.

Successful exploitation allows execution of arbitrary code on a
vulnerable system with the privileges of webfs.

SOLUTION:
The vulnerability has been fixed in webfs version 1.18 and later. The
latest version may be downloaded at:
http://bytesex.org/misc/webfs_1.19.tar.gz

Debian has issued updated packages:

-- Debian GNU/Linux 3.0 alias woody --

Source archives:

http://security.debian.org/pool/updates/main/w/webfs/webfs_1.17.1.dsc
Size/MD5 checksum: 472 ebff11ea33e3a2692c8d11b2b42fbe51
http://security.debian.org/pool/updates/main/w/webfs/webfs_1.17.1.tar.gz
Size/MD5 checksum: 40979 6cd1419cd680e0dedaaddf8d5b1f6014

Alpha architecture:

http://security.debian.org/pool/updates/main/w/webfs/webfs_1.17.1_alpha.deb
Size/MD5 checksum: 37058 ceadb6ced7463c646f826c6894766d65

ARM architecture:

http://security.debian.org/pool/updates/main/w/webfs/webfs_1.17.1_arm.deb
Size/MD5 checksum: 34050 f00275e59fdbf15cf1fa1f56f18f552d

Intel IA-32 architecture:

http://security.debian.org/pool/updates/main/w/webfs/webfs_1.17.1_i386.deb
Size/MD5 checksum: 32366 cc87f8da127a490e718cbd53a91b22ae

Intel IA-64 architecture:

http://security.debian.org/pool/updates/main/w/webfs/webfs_1.17.1_ia64.deb
Size/MD5 checksum: 45388 f97e46167c401f1ed8d8772d2e69a3c8

HP Precision architecture:

http://security.debian.org/pool/updates/main/w/webfs/webfs_1.17.1_hppa.deb
Size/MD5 checksum: 35414 8e21ab1df89efb46ffc93f46e25551db

Motorola 680x0 architecture:

http://security.debian.org/pool/updates/main/w/webfs/webfs_1.17.1_m68k.deb
Size/MD5 checksum: 31020 77084aa2f8a1b5387375161ada8a3fbc

Big endian MIPS architecture:

http://security.debian.org/pool/updates/main/w/webfs/webfs_1.17.1_mips.deb
Size/MD5 checksum: 34576 0ca14889e9837081ca8c16d649b10ff9

Little endian MIPS architecture:

http://security.debian.org/pool/updates/main/w/webfs/webfs_1.17.1_mipsel.deb
Size/MD5 checksum: 34560 edd5ce2fe5aed50645c7e2b6bef38933

PowerPC architecture:

http://security.debian.org/pool/updates/main/w/webfs/webfs_1.17.1_powerpc.deb
Size/MD5 checksum: 33204 d7cb83a6b91e1ffd037b799a9da81ad1

IBM S/390 architecture:

http://security.debian.org/pool/updates/main/w/webfs/webfs_1.17.1_s390.deb
Size/MD5 checksum: 34376 c48ec81b893a28988b51cdf216925341

Sun Sparc architecture:

http://security.debian.org/pool/updates/main/w/webfs/webfs_1.17.1_sparc.deb
Size/MD5 checksum: 36380 ce67a09910792ed48a4b9f887d80478d

-- Debian GNU/Linux unstable alias sid --

Reportedly, this will be fixed soon.

ORIGINAL ADVISORY:
http://www.debian.org/security/2003/dsa-328

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