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Debian Security Advisory DSA 148-1 security@debian.org
http://www.debian.org/security/ Martin Schulze
August 12th, 2002
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Package : hylafax
Vulnerability : buffer overflows and format string vulnerabilities
Problem-Type : remote
Debian-specific: no
CVE Id : CAN-2001-1034
Bugtraq Id : 3357 5349 5348
A set of problems have been discovered in Hylafax, a flexible
client/server fax software distributed with many GNU/Linux
distributions. Quoting SecurityFocus the problems are in detail:
* A format string vulnerability makes it possible for users to
potentially execute arbitrary code on some implementations. Due to
insufficient checking of input, it's possible to execute a format
string attack. Since this only affects systems with the faxrm and
faxalter programs installed setuid, Debian is not vulnerable.
* A buffer overflow has been reported in Hylafax. A malicious fax
transmission may include a long scan line that will overflow a
memory buffer, corrupting adjacent memory. An exploid may result
in a denial of service condition, or possibly the execution of
arbitrary code with root privileges.
* A format string vulnerability has been discovered in faxgetty.
Incoming fax messages include a Transmitting Subscriber
Identification (TSI) string, used to identify the sending fax
machine. Hylafax uses this data as part of a format string without
properly sanitizing the input. Malicious fax data may cause the
server to crash, resulting in a denial of service condition.
* Marcin Dawcewicz discovered a format string vulnerability in hfaxd,
which will crash hfaxd under certain circumstances. Since Debian
doesn't have hfaxd installed setuid root, this problem can not
directly lead into a vulnerability. This has been fixed by Darren
Nickerson, which was already present in newer versions, but not in
the potato version.
These problems have been fixed in version 4.0.2-14.3 for the old
stable distribution (potato), in version 4.1.1-1.1 for the current
stable distribution (woody) and in version 4.1.2-2.1 for the unstable
distribution (sid).
We recommend that you upgrade your hylafax packages.
wget url
will fetch the file for you
dpkg -i file.deb
will install the referenced file.
If you are using the apt-get package manager, use the line for
sources.list as given below:
apt-get update
will update the internal database
apt-get upgrade
will install corrected packages
You may use an automated update by adding the resources from the
footer to the proper configuration.
Debian GNU/Linux 2.2 alias potato
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Source archives:
http://security.debian.org/pool/updates/main/h/hylafax/hylafax_4.0.2-14.3.dsc
Size/MD5 checksum: 624 258322373e17ea876ced8ff40d2657ae
http://security.debian.org/pool/updates/main/h/hylafax/hylafax_4.0.2-14.3.diff.gz
Size/MD5 checksum: 81815 5d08c97482de1c0fb396148a43e464be
http://security.debian.org/pool/updates/main/h/hylafax/hylafax_4.0.2.orig.tar.gz
Size/MD5 checksum: 1343569 59966e41f769770134b2c80c84245874
Architecture independent components:
http://security.debian.org/pool/updates/main/h/hylafax/hylafax-doc_4.0.2-14.3_all.deb
Size/MD5 checksum: 517632 2cfca398afd15471a4f3c8194dc838ae
Alpha architecture:
http://security.debian.org/pool/updates/main/h/hylafax/hylafax-client_4.0.2-14.3_alpha.deb
Size/MD5 checksum: 509592 d3fb699ea9bd4fb5cddb16a7931a395e
http://security.debian.org/pool/updates/main/h/hylafax/hylafax-server_4.0.2-14.3_alpha.deb
Size/MD5 checksum: 1130548 9017187a07824236de07dce42a5032be
ARM architecture:
http://security.debian.org/pool/updates/main/h/hylafax/hylafax-client_4.0.2-14.3_arm.deb
Size/MD5 checksum: 389264 98c2a5dfa4306965acc9d6f0ea909605
http://security.debian.org/pool/updates/main/h/hylafax/hylafax-server_4.0.2-14.3_arm.deb
Size/MD5 checksum: 864078 793c1de1a50bb73536c1246c96b0d450
Intel IA-32 architecture:
http://security.debian.org/pool/updates/main/h/hylafax/hylafax-client_4.0.2-14.3_i386.deb
Size/MD5 checksum: 398406 9e30d17b4645472b1b04bab0962c1080
http://security.debian.org/pool/updates/main/h/hylafax/hylafax-server_4.0.2-14.3_i386.deb
Size/MD5 checksum: 877434 1ae774e2115c983eed9fda2b6c19aa84
Motorola 680x0 architecture:
http://security.debian.org/pool/updates/main/h/hylafax/hylafax-client_4.0.2-14.3_m68k.deb
Size/MD5 checksum: 385696 3177d7de33c31a7ee2e6fa67f81bdb77
http://security.debian.org/pool/updates/main/h/hylafax/hylafax-server_4.0.2-14.3_m68k.deb
Size/MD5 checksum: 843094 10610c3e3082a5e3e92ca0f07b2e961d
PowerPC architecture:
http://security.debian.org/pool/updates/main/h/hylafax/hylafax-client_4.0.2-14.3_powerpc.deb
Size/MD5 checksum: 388586 7917f305ddc521f3c0bf50f1df2d38eb
http://security.debian.org/pool/updates/main/h/hylafax/hylafax-server_4.0.2-14.3_powerpc.deb
Size/MD5 checksum: 858980 26889bca9a720946245519abaf96b32f
Sun Sparc architecture:
http://security.debian.org/pool/updates/main/h/hylafax/hylafax-client_4.0.2-14.3_sparc.deb
Size/MD5 checksum: 370812 80f3caad71eb8b3c67b6f7a8500460c4
http://security.debian.org/pool/updates/main/h/hylafax/hylafax-server_4.0.2-14.3_sparc.deb
Size/MD5 checksum: 827696 d11315ac73cf015bd8366f1c6c85e218
Debian GNU/Linux 3.0 alias woody
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Hylafax was released only for the architectures alpha, arm, hppa,
i386, ia64, m68k, powerpc, s390 and sparc.
Source archives:
http://security.debian.org/pool/updates/main/h/hylafax/hylafax_4.1.1-1.1.dsc
Size/MD5 checksum: 741 bc3635f4c19a0700b4cc717c6c1322e7
http://security.debian.org/pool/updates/main/h/hylafax/hylafax_4.1.1-1.1.diff.gz
Size/MD5 checksum: 114552 612823bb6a275ab886fe2138ef15eae2
http://security.debian.org/pool/updates/main/h/hylafax/hylafax_4.1.1.orig.tar.gz
Size/MD5 checksum: 1287689 1ed081750be70a800708699b7568e17e
Architecture independent components:
http://security.debian.org/pool/updates/main/h/hylafax/hylafax-doc_4.1.1-1.1_all.deb
Size/MD5 checksum: 318018 b2c9b05305490a58bcb325276964e3d2
Alpha architecture:
http://security.debian.org/pool/updates/main/h/hylafax/hylafax-client_4.1.1-1.1_alpha.deb
Size/MD5 checksum: 556040 27102aa33baac1f507abf7c98e606b3b
http://security.debian.org/pool/updates/main/h/hylafax/hylafax-server_4.1.1-1.1_alpha.deb
Size/MD5 checksum: 1362152 f68c48dd394d175da3a0ecdeb6e112e3
ARM architecture:
http://security.debian.org/pool/updates/main/h/hylafax/hylafax-client_4.1.1-1.1_arm.deb
Size/MD5 checksum: 445322 75ccc9e7ce3e0f85977a0e6f584eb4d5
http://security.debian.org/pool/updates/main/h/hylafax/hylafax-server_4.1.1-1.1_arm.deb
Size/MD5 checksum: 1095062 cccb608c1f26ed0611b54992720f5000
Intel IA-32 architecture:
http://security.debian.org/pool/updates/main/h/hylafax/hylafax-client_4.1.1-1.1_i386.deb
Size/MD5 checksum: 462154 16a74f04fe1fb9d5c682239e202dbda5
http://security.debian.org/pool/updates/main/h/hylafax/hylafax-server_4.1.1-1.1_i386.deb
Size/MD5 checksum: 1132412 a941316aca93f58e0e257222b1e25111
Intel IA-64 architecture:
http://security.debian.org/pool/updates/main/h/hylafax/hylafax-client_4.1.1-1.1_ia64.deb
Size/MD5 checksum: 615468 7ff33e153f2759a07c772f8a68f480d8
http://security.debian.org/pool/updates/main/h/hylafax/hylafax-server_4.1.1-1.1_ia64.deb
Size/MD5 checksum: 1491408 6720c5951d6a944db481386ea7be3320
HP Precision architecture:
http://security.debian.org/pool/updates/main/h/hylafax/hylafax-client_4.1.1-1.1_hppa.deb
Size/MD5 checksum: 501290 23fb491d4212c8677ca90412ff7502ef
http://security.debian.org/pool/updates/main/h/hylafax/hylafax-server_4.1.1-1.1_hppa.deb
Size/MD5 checksum: 1230944 83df5af12938f6615ce95109a26b5e0a
Motorola 680x0 architecture:
http://security.debian.org/pool/updates/main/h/hylafax/hylafax-client_4.1.1-1.1_m68k.deb
Size/MD5 checksum: 451016 753934c8f05bc2f5db81ef9a1f3f01a7
http://security.debian.org/pool/updates/main/h/hylafax/hylafax-server_4.1.1-1.1_m68k.deb
Size/MD5 checksum: 1099728 3c0921de3887e99a71f0f79c00bd2091
PowerPC architecture:
http://security.debian.org/pool/updates/main/h/hylafax/hylafax-client_4.1.1-1.1_powerpc.deb
Size/MD5 checksum: 450046 53b65e2f2f7a95d49b0f160606c12317
http://security.debian.org/pool/updates/main/h/hylafax/hylafax-server_4.1.1-1.1_powerpc.deb
Size/MD5 checksum: 1103892 efd5bdedef2a68adcc7ce30a66b6a2ea
IBM S/390 architecture:
http://security.debian.org/pool/updates/main/h/hylafax/hylafax-client_4.1.1-1.1_s390.deb
Size/MD5 checksum: 441698 0643afc885cbfe883b16128181fe0967
http://security.debian.org/pool/updates/main/h/hylafax/hylafax-server_4.1.1-1.1_s390.deb
Size/MD5 checksum: 1087174 76704c6234fe4c9bebaa4ae517a69e25
Sun Sparc architecture:
http://security.debian.org/pool/updates/main/h/hylafax/hylafax-client_4.1.1-1.1_sparc.deb
Size/MD5 checksum: 433586 06e478ccafa99cda109b6cce8192a5df
http://security.debian.org/pool/updates/main/h/hylafax/hylafax-server_4.1.1-1.1_sparc.deb
Size/MD5 checksum: 1082202 cbef6f10a8ab7b5515838de3466f3847
These files will probably be moved into the stable distribution on
its next revision.
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For apt-get: deb http://security.debian.org/ stable/updates main
For dpkg-ftp: ftp://security.debian.org/debian-security dists/stable/updates/main
Mailing list: debian-security-announce@lists.debian.org
Package info: `apt-cache show <pkg>' and http://packages.debian.org/<pkg>
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