CVE Vulnerabilities

CVE-2001-1378

Improper Link Resolution Before File Access ('Link Following')

Published: Sep 06, 2001 | Modified: Feb 16, 2011
CVSS 3.x
N/A
Source:
NVD
CVSS 2.x
2.1 LOW
AV:L/AC:L/Au:N/C:N/I:P/A:N
RedHat/V2
RedHat/V3
Ubuntu

fetchmailconf in fetchmail before 5.7.4 allows local users to overwrite files of other users via a symlink attack on temporary files.

Weakness

The software attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource.

Affected Software

Name Vendor Start Version End Version
Fetchmail Fetchmail 4.5.1 4.5.1
Fetchmail Fetchmail 4.5.2 4.5.2
Fetchmail Fetchmail 4.5.3 4.5.3
Fetchmail Fetchmail 4.5.4 4.5.4
Fetchmail Fetchmail 4.5.5 4.5.5
Fetchmail Fetchmail 4.5.6 4.5.6
Fetchmail Fetchmail 4.5.7 4.5.7
Fetchmail Fetchmail 4.5.8 4.5.8
Fetchmail Fetchmail 4.6.0 4.6.0
Fetchmail Fetchmail 4.6.1 4.6.1
Fetchmail Fetchmail 4.6.2 4.6.2
Fetchmail Fetchmail 4.6.3 4.6.3
Fetchmail Fetchmail 4.6.4 4.6.4
Fetchmail Fetchmail 4.6.5 4.6.5
Fetchmail Fetchmail 4.6.6 4.6.6
Fetchmail Fetchmail 4.6.7 4.6.7
Fetchmail Fetchmail 4.6.8 4.6.8
Fetchmail Fetchmail 4.6.9 4.6.9
Fetchmail Fetchmail 4.7.0 4.7.0
Fetchmail Fetchmail 4.7.1 4.7.1
Fetchmail Fetchmail 4.7.2 4.7.2
Fetchmail Fetchmail 4.7.3 4.7.3
Fetchmail Fetchmail 4.7.4 4.7.4
Fetchmail Fetchmail 4.7.5 4.7.5
Fetchmail Fetchmail 4.7.6 4.7.6
Fetchmail Fetchmail 4.7.7 4.7.7
Fetchmail Fetchmail 5.0.0 5.0.0
Fetchmail Fetchmail 5.0.1 5.0.1
Fetchmail Fetchmail 5.0.2 5.0.2
Fetchmail Fetchmail 5.0.3 5.0.3
Fetchmail Fetchmail 5.0.4 5.0.4
Fetchmail Fetchmail 5.0.5 5.0.5
Fetchmail Fetchmail 5.0.6 5.0.6
Fetchmail Fetchmail 5.0.7 5.0.7
Fetchmail Fetchmail 5.0.8 5.0.8
Fetchmail Fetchmail 5.1.0 5.1.0
Fetchmail Fetchmail 5.1.4 5.1.4
Fetchmail Fetchmail 5.2.0 5.2.0
Fetchmail Fetchmail 5.2.1 5.2.1
Fetchmail Fetchmail 5.2.3 5.2.3
Fetchmail Fetchmail 5.2.4 5.2.4
Fetchmail Fetchmail 5.2.7 5.2.7
Fetchmail Fetchmail 5.2.8 5.2.8
Fetchmail Fetchmail 5.3.0 5.3.0
Fetchmail Fetchmail 5.3.1 5.3.1
Fetchmail Fetchmail 5.3.3 5.3.3
Fetchmail Fetchmail 5.3.8 5.3.8
Fetchmail Fetchmail 5.4.0 5.4.0
Fetchmail Fetchmail 5.4.3 5.4.3
Fetchmail Fetchmail 5.4.4 5.4.4
Fetchmail Fetchmail 5.4.5 5.4.5
Fetchmail Fetchmail 5.5.0 5.5.0
Fetchmail Fetchmail 5.5.2 5.5.2
Fetchmail Fetchmail 5.5.3 5.5.3
Fetchmail Fetchmail 5.5.5 5.5.5
Fetchmail Fetchmail 5.5.6 5.5.6
Fetchmail Fetchmail 5.6.0 5.6.0
Fetchmail Fetchmail 5.7.0 5.7.0
Fetchmail Fetchmail * 5.7.2

Potential Mitigations

  • Follow the principle of least privilege when assigning access rights to entities in a software system.
  • Denying access to a file can prevent an attacker from replacing that file with a link to a sensitive file. Ensure good compartmentalization in the system to provide protected areas that can be trusted.

References