CVE-2014-7206

The changelog command in Apt before 1.0.9.2 allows local users to write to arbitrary files via a symlink attack on the changelog file.

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
Advanced_package_tool	Debian	*	1.0.9.1 (including)
Advanced_package_tool	Debian	1.0.8 (including)	1.0.8 (including)
Apt	Debian	0.9.7.9-ubunto3 (including)	0.9.7.9-ubunto3 (including)
Apt	Debian	0.9.7.9-ubunto4 (including)	0.9.7.9-ubunto4 (including)
Apt	Debian	0.9.7.9-ubunto5 (including)	0.9.7.9-ubunto5 (including)
Apt	Debian	1.0.9 (including)	1.0.9 (including)
Apt	Ubuntu	devel	*
Apt	Ubuntu	esm-infra-legacy/trusty	*
Apt	Ubuntu	precise	*
Apt	Ubuntu	trusty	*
Apt	Ubuntu	trusty/esm	*

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.

NVD	https://nvd.nist.gov/vuln/detail/CVE-2014-7206
CWE	https://cwe.mitre.org/data/definitions/59.html

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

Weakness

Affected Software

Potential Mitigations

References

CVE-2014-7206

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

Weakness

Affected Software

Potential Mitigations

Related Attack Patterns

References