Vulnerabilities
Misconfiguration
Runtime Security
Compliance
CVE Vulnerabilities

CVE-2015-3436

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

Published: Jun 09, 2015 | Modified: Dec 06, 2016
CVSS 3.x
N/A
Source:
NVD
CVSS 2.x
6.6 MEDIUM
AV:L/AC:L/Au:N/C:N/I:C/A:C
RedHat/V2
RedHat/V3
Ubuntu
Additional information
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2015-3436
CWEhttps://cwe.mitre.org/data/definitions/59.html

provider/server/ECServer.cpp in Zarafa Collaboration Platform (ZCP) before 7.1.13 and 7.2.x before 7.2.1 allows local users to write to arbitrary files via a symlink attack on /tmp/zarafa-upgrade-lock.

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

Name Vendor Start Version End Version
Zarafa_collaboration_platform Zarafa * 7.1.12 (including)
Zarafa_collaboration_platform Zarafa 7.2.0 (including) 7.2.0 (including)

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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