Debian Security Advisory
DSA-148-1 hylafax -- buffer overflows and format string vulnerabilities
- Date Reported:
- 12 Aug 2002
- Affected Packages:
- hylafax
- Vulnerable:
- Yes
- Security database references:
- In the Bugtraq database (at SecurityFocus): BugTraq ID 3357, BugTraq ID 5349, BugTraq ID 5348.
In Mitre's CVE dictionary: CVE-2002-1049, CVE-2002-1050, CVE-2001-1034. - More information:
-
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 exploit 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 cannot 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.
- Fixed in:
-
Debian GNU/Linux 2.2 (potato)
- Source:
- http://security.debian.org/pool/updates/main/h/hylafax/hylafax_4.0.2-14.3.dsc
- http://security.debian.org/pool/updates/main/h/hylafax/hylafax_4.0.2-14.3.diff.gz
- http://security.debian.org/pool/updates/main/h/hylafax/hylafax_4.0.2.orig.tar.gz
- http://security.debian.org/pool/updates/main/h/hylafax/hylafax_4.0.2-14.3.diff.gz
- Architecture-independent component:
- http://security.debian.org/pool/updates/main/h/hylafax/hylafax-doc_4.0.2-14.3_all.deb
- Alpha:
- http://security.debian.org/pool/updates/main/h/hylafax/hylafax-client_4.0.2-14.3_alpha.deb
- http://security.debian.org/pool/updates/main/h/hylafax/hylafax-server_4.0.2-14.3_alpha.deb
- http://security.debian.org/pool/updates/main/h/hylafax/hylafax-server_4.0.2-14.3_alpha.deb
- ARM:
- http://security.debian.org/pool/updates/main/h/hylafax/hylafax-client_4.0.2-14.3_arm.deb
- http://security.debian.org/pool/updates/main/h/hylafax/hylafax-server_4.0.2-14.3_arm.deb
- http://security.debian.org/pool/updates/main/h/hylafax/hylafax-server_4.0.2-14.3_arm.deb
- Intel IA-32:
- http://security.debian.org/pool/updates/main/h/hylafax/hylafax-client_4.0.2-14.3_i386.deb
- http://security.debian.org/pool/updates/main/h/hylafax/hylafax-server_4.0.2-14.3_i386.deb
- http://security.debian.org/pool/updates/main/h/hylafax/hylafax-server_4.0.2-14.3_i386.deb
- Motorola 680x0:
- http://security.debian.org/pool/updates/main/h/hylafax/hylafax-client_4.0.2-14.3_m68k.deb
- http://security.debian.org/pool/updates/main/h/hylafax/hylafax-server_4.0.2-14.3_m68k.deb
- http://security.debian.org/pool/updates/main/h/hylafax/hylafax-server_4.0.2-14.3_m68k.deb
- PowerPC:
- http://security.debian.org/pool/updates/main/h/hylafax/hylafax-client_4.0.2-14.3_powerpc.deb
- http://security.debian.org/pool/updates/main/h/hylafax/hylafax-server_4.0.2-14.3_powerpc.deb
- http://security.debian.org/pool/updates/main/h/hylafax/hylafax-server_4.0.2-14.3_powerpc.deb
- Sun Sparc:
- http://security.debian.org/pool/updates/main/h/hylafax/hylafax-client_4.0.2-14.3_sparc.deb
- http://security.debian.org/pool/updates/main/h/hylafax/hylafax-server_4.0.2-14.3_sparc.deb
- http://security.debian.org/pool/updates/main/h/hylafax/hylafax-server_4.0.2-14.3_sparc.deb
Debian GNU/Linux 3.0 (woody)
- Source:
- http://security.debian.org/pool/updates/main/h/hylafax/hylafax_4.1.1-1.1.dsc
- http://security.debian.org/pool/updates/main/h/hylafax/hylafax_4.1.1-1.1.diff.gz
- http://security.debian.org/pool/updates/main/h/hylafax/hylafax_4.1.1.orig.tar.gz
- http://security.debian.org/pool/updates/main/h/hylafax/hylafax_4.1.1-1.1.diff.gz
- Architecture-independent component:
- http://security.debian.org/pool/updates/main/h/hylafax/hylafax-doc_4.1.1-1.1_all.deb
- Alpha:
- http://security.debian.org/pool/updates/main/h/hylafax/hylafax-client_4.1.1-1.1_alpha.deb
- http://security.debian.org/pool/updates/main/h/hylafax/hylafax-server_4.1.1-1.1_alpha.deb
- http://security.debian.org/pool/updates/main/h/hylafax/hylafax-server_4.1.1-1.1_alpha.deb
- ARM:
- http://security.debian.org/pool/updates/main/h/hylafax/hylafax-client_4.1.1-1.1_arm.deb
- http://security.debian.org/pool/updates/main/h/hylafax/hylafax-server_4.1.1-1.1_arm.deb
- http://security.debian.org/pool/updates/main/h/hylafax/hylafax-server_4.1.1-1.1_arm.deb
- Intel IA-32:
- http://security.debian.org/pool/updates/main/h/hylafax/hylafax-client_4.1.1-1.1_i386.deb
- http://security.debian.org/pool/updates/main/h/hylafax/hylafax-server_4.1.1-1.1_i386.deb
- http://security.debian.org/pool/updates/main/h/hylafax/hylafax-server_4.1.1-1.1_i386.deb
- Intel IA-64:
- http://security.debian.org/pool/updates/main/h/hylafax/hylafax-client_4.1.1-1.1_ia64.deb
- http://security.debian.org/pool/updates/main/h/hylafax/hylafax-server_4.1.1-1.1_ia64.deb
- http://security.debian.org/pool/updates/main/h/hylafax/hylafax-server_4.1.1-1.1_ia64.deb
- HP Precision:
- http://security.debian.org/pool/updates/main/h/hylafax/hylafax-client_4.1.1-1.1_hppa.deb
- http://security.debian.org/pool/updates/main/h/hylafax/hylafax-server_4.1.1-1.1_hppa.deb
- http://security.debian.org/pool/updates/main/h/hylafax/hylafax-server_4.1.1-1.1_hppa.deb
- Motorola 680x0:
- http://security.debian.org/pool/updates/main/h/hylafax/hylafax-client_4.1.1-1.1_m68k.deb
- http://security.debian.org/pool/updates/main/h/hylafax/hylafax-server_4.1.1-1.1_m68k.deb
- http://security.debian.org/pool/updates/main/h/hylafax/hylafax-server_4.1.1-1.1_m68k.deb
- PowerPC:
- http://security.debian.org/pool/updates/main/h/hylafax/hylafax-client_4.1.1-1.1_powerpc.deb
- http://security.debian.org/pool/updates/main/h/hylafax/hylafax-server_4.1.1-1.1_powerpc.deb
- http://security.debian.org/pool/updates/main/h/hylafax/hylafax-server_4.1.1-1.1_powerpc.deb
- IBM S/390:
- http://security.debian.org/pool/updates/main/h/hylafax/hylafax-client_4.1.1-1.1_s390.deb
- http://security.debian.org/pool/updates/main/h/hylafax/hylafax-server_4.1.1-1.1_s390.deb
- http://security.debian.org/pool/updates/main/h/hylafax/hylafax-server_4.1.1-1.1_s390.deb
- Sun Sparc:
- http://security.debian.org/pool/updates/main/h/hylafax/hylafax-client_4.1.1-1.1_sparc.deb
- http://security.debian.org/pool/updates/main/h/hylafax/hylafax-server_4.1.1-1.1_sparc.deb
- http://security.debian.org/pool/updates/main/h/hylafax/hylafax-server_4.1.1-1.1_sparc.deb
MD5 checksums of the listed files are available in the original advisory.