XSane temp files symlink
| xsane-temp-symlink (7714) |  Medium Risk |
Description:
The XSane package in some Unix distributions could allow a local attacker to launch a symlink attack. The XSane package creates temporary files with predictable file names in the /tmp directory during the scanning process. A local attacker can create symbolic links to any file that is write-accessible to overwrite arbitrary files on the system.
This vulnerability also affects the SANE package in some distributions.
Consequences:
File Manipulation
Remedy:
For FreeBSD ports collection: Upgrade to the latest version of XSane (0.82 or later), as listed in FreeBSD, Inc. Security Advisory FreeBSD-SA-01:68. See References.
For Red Hat Linux 7.0:
Upgrade to the latest version of SANE (1.0.3-2.1 or later) and XSANE (0.82-2.1 or later), as listed in Red Hat Linux Errata Advisory RHSA-2001:171-11. See References.
For Red Hat Linux 7.1:
Upgrade to the latest version of SANE (1.0.3-10.1 or later) and XSANE (0.82-3.1 or later), as listed in Red Hat Linux Errata Advisory RHSA-2001:171-11. See References.
For Red Hat Linux 7.2:
Upgrade to the latest version of SANE (1.0.5-4.1 or later) and XSANE (0.82-3.1 or later), as listed in Red Hat Linux Errata Advisory RHSA-2001:171-11. See References.
For Conectiva Linux:
Upgrade to the latest sane package, as listed below. Refer to Conectiva Linux Security Announcement CLSA-2003:769 for more information. See References.
Conectiva Linux 7.0: 1.0.4-3U70_1cl or later
Conectiva Linux 8: 1.0.6-3U80_1cl or later
For other distributions:
Contact your vendor for upgrade or patch information.
References:
- Conectiva Linux Security Announcement CLSA-2003:769: sane.
- FreeBSD Security Advisory FreeBSD-SA-01:68: xsane port uses insecure temporary file handling.
- BID-3700: xSANE Insecure Temporary File Creation Vulnerability
- BID-3987: SANE Insecure Temporary File Creation Vulnerability
- CVE-2001-0887: xSANE 0.81 and earlier allows local users to modify files of other xSANE users via a symlink attack on temporary files.
- CVE-2001-0890: Certain backend drivers in the SANE library 1.0.3 and earlier, as used in frontend software such as XSane, allows local users to modify files via a symlink attack on temporary files.
- DSA-118: xsane -- insecure temporary files
- OSVDB ID: 13983: SANE Library Backend Driver Symlink Arbitrary File Modification
- OSVDB ID: 2005: xSANE Symlink Arbitrary File Modification
- RHSA-2001-171: Updated SANE and XSane packages fix temporary file handling vulnerabilities
- RHSA-2001-172: Updated SANE and XSane packages fix temporary file handling vulnerabilities
Platforms Affected:
- Conectiva Linux 7.0
- Conectiva Linux 8.0
- FreeBSD FreeBSD Ports Collection
- RedHat Linux 7
- RedHat Linux 7.1
- RedHat Linux 7.2
- RedHat Linux 7.3
- RedHat Linux Powertools 6.2
- SANE mailing list SANE
Reported:
Dec 17, 2001
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