Vulnerabilities
Misconfiguration
Compliance
CVE Vulnerabilities

CVE-2010-0789

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

Published: Mar 02, 2010 | Modified: Apr 11, 2025
CVSS 3.x
N/A
Source:
NVD
CVSS 2.x
3.3 LOW
AV:L/AC:M/Au:N/C:N/I:P/A:P
RedHat/V2
1.7 LOW
AV:L/AC:L/Au:S/C:N/I:N/A:P
RedHat/V3
Ubuntu
MEDIUM
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Additional information
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2010-0789
CWEhttps://cwe.mitre.org/data/definitions/59.html

fusermount in FUSE before 2.7.5, and 2.8.x before 2.8.2, allows local users to unmount an arbitrary FUSE filesystem share via a symlink attack on a mountpoint.

Weakness

The product 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

NameVendorStart VersionEnd Version
FuseFuse1.9 (including)1.9 (including)
FuseFuse2.0-pre0 (including)2.0-pre0 (including)
FuseFuse2.0-pre1 (including)2.0-pre1 (including)
FuseFuse2.1 (including)2.1 (including)
FuseFuse2.2 (including)2.2 (including)
FuseFuse2.2.1 (including)2.2.1 (including)
FuseFuse2.3-pre (including)2.3-pre (including)
FuseFuse2.3-rc1 (including)2.3-rc1 (including)
FuseFuse2.3.0 (including)2.3.0 (including)
FuseFuse2.4.0 (including)2.4.0 (including)
FuseFuse2.4.1 (including)2.4.1 (including)
FuseFuse2.4.2 (including)2.4.2 (including)
FuseFuse2.5.0 (including)2.5.0 (including)
FuseFuse2.5.1 (including)2.5.1 (including)
FuseFuse2.5.2 (including)2.5.2 (including)
FuseFuse2.5.3 (including)2.5.3 (including)
FuseFuse2.6.0 (including)2.6.0 (including)
FuseFuse2.6.1 (including)2.6.1 (including)
FuseFuse2.6.3 (including)2.6.3 (including)
FuseFuse2.6.5 (including)2.6.5 (including)
FuseFuse2.7.0 (including)2.7.0 (including)
FuseFuse2.7.1 (including)2.7.1 (including)
FuseFuse2.7.2 (including)2.7.2 (including)
FuseFuse2.7.3 (including)2.7.3 (including)
FuseFuse2.7.4 (including)2.7.4 (including)
FuseUbuntudapper*
FuseUbuntudevel*
FuseUbuntuhardy*
FuseUbuntuintrepid*
FuseUbuntujaunty*
FuseUbuntukarmic*

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

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