Net-Acct temporary file symlink attack
| net-acct-tmp-symlink (17283) |  Medium Risk |
Description:
Net-Acct creates temporary files insecurely. A local attacker could create a symbolic link from a temporary file to an arbitrary file, which could allow the attacker to create or overwrite files on the system.
Platforms Affected:
- Debian, Debian Linux 3.0
- Ulrich Callmeier, Net-Acct 0.71 and prior
Remedy:
Apply the net-acct-notempfiles patch, available from the Net-Acct Web page. See References.
For Debian GNU/Linux 3.0 (woody):
Upgrade to the latest net-acct package, as listed below. Refer to DSA-559-1 for more information. See References.
Debian GNU/Linux 3.0 (woody): 0.71-5woody1 or later
For other distributions:
Contact your vendor for upgrade or patch information.
Consequences:
File Manipulation
References:
- Net-Acct Web page, Net-Acct at http://exorsus.net/projects/net-acct/.
- BID-11125: Net-Acct Symbolic Link Vulnerability
- CVE-2004-0851: The (1) write_list and (2) dump_curr_list functions in Net-Acct before 0.71 allows local users to overwrite arbitrary files via a symlink attack on temporary files.
- DSA-559: net-acct -- insecure temporary file
- SA12476: Net-Acct Insecure Temporary File Creation Vulnerability
Reported:
Sep 07, 2004
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