GNU a2ps fixps.in script symlink attack
| gnu-a2ps-fixpsin-symlink (18671) |  Medium Risk |
Description:
GNU a2ps could allow a local attacker to launch a symlink attack. The fixps.in script creates insecure temporary files. A local attacker could use this vulnerability to create symbolic links from a temporary file to overwrite or create arbitrary files on the system with elevated privileges.
Platforms Affected:
- Gentoo, Linux
- GNU, A2ps 4.13b
- MandrakeSoft, Mandrake Linux 10.1
- MandrakeSoft, Mandrake Linux 10.1 X86_64
- MandrakeSoft, Mandrake Linux LE2005
- MandrakeSoft, Mandrake Linux LE2005 X86_64
- MandrakeSoft, Mandrake Linux Corporate Server 2.1 X86_64
- MandrakeSoft, Mandrake Linux Corporate Server 2.1
- MandrakeSoft, Mandrake Linux Corporate Server 3.0
- MandrakeSoft, Mandrake Linux Corporate Server 3.0 X86_64
- Turbolinux, Turbolinux 10 Desktop
- Turbolinux, Turbolinux 10 F...
- Turbolinux, Turbolinux 10 Server
- Turbolinux, Turbolinux 7 Server
- Turbolinux, Turbolinux 7 Workstation
- Turbolinux, Turbolinux 8 Server
- Turbolinux, Turbolinux 8 Workstation
- Turbolinux, Turbolinux Home
Remedy:
For Gentoo Linux:
Refer to Gentoo Linux Security Announcement GLSA 2005-01-02 for patch, upgrade, or suggested workaround information. See References.
Consequences:
File Manipulation
References:
- GNU a2ps Web page, a2ps - GNU Project - Free Software Foundation (FSF) at http://www.gnu.org/software/a2ps/#introduction.
- BID-12108: GNU A2PS fixps.in Script Insecure Temporary File Vulnerability
- BID-12109: GNU A2PS psmandup.in Script Insecure Temporary File Vulnerability
- CVE-2004-1377: The (1) fixps (aka fixps.in) and (2) psmandup (aka psmandup.in) scripts in a2ps before 4.13 allow local users to overwrite arbitrary files via a symlink attack on temporary files.
- GLSA-200501-02: a2ps: Multiple vulnerabilities
- MDKSA-2005:097: Updated a2ps packages fix temporary file vulnerabilities
- SA13641: GNU a2ps Two Scripts Insecure Temporary File Creation
Reported:
Dec 27, 2004
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