Vulnerabilities
Misconfiguration
Compliance
CVE Vulnerabilities

CVE-2010-4337

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

Published: Jan 14, 2011 | 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
RedHat/V3
Ubuntu
LOW
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Additional information
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2010-4337
CWEhttps://cwe.mitre.org/data/definitions/59.html

The configure script in gnash 0.8.8 allows local users to overwrite arbitrary files via a symlink attack on the (1) /tmp/gnash-configure-errors.$$, (2) /tmp/gnash-configure-warnings.$$, or (3) /tmp/gnash-configure-recommended.$$ files.

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
GnashGnu0.8.8 (including)0.8.8 (including)
GnashUbuntuhardy*
GnashUbuntukarmic*
GnashUbuntulucid*
GnashUbuntumaverick*
GnashUbuntunatty*
GnashUbuntuoneiric*
GnashUbuntuquantal*
GnashUbunturaring*
GnashUbuntusaucy*
GnashUbuntuupstream*
GnashUbuntuutopic*
GnashUbuntuvivid*
GnashUbuntuwily*

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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