SB2014011905 - Link following in libimobiledevice

Description

This security bulletin contains information about 1 vulnerability.

1) Link following (CVE-ID: CVE-2013-2142)

CWE-ID: CWE-59 - Improper Link Resolution Before File Access ('Link Following')

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Green

The vulnerability allows a remote non-authenticated attacker to manipulate or delete data.

userpref.c in libimobiledevice 1.1.4, when $HOME and $XDG_CONFIG_HOME are not set, allows local users to overwrite arbitrary files via a symlink attack on (1) HostCertificate.pem, (2) HostPrivateKey.pem, (3) libimobiledevicerc, (4) RootCertificate.pem, or (5) RootPrivateKey.pem in /tmp/root/.config/libimobiledevice/.

Remediation

Install update from vendor's website.

References

• http://libiphone.lighthouseapp.com/projects/27916-libiphone/tickets/331-insecure-tmp-directory-use
• http://www.openwall.com/lists/oss-security/2013/06/04/11
• http://www.ubuntu.com/usn/USN-1927-1
• https://bugs.launchpad.net/ubuntu/%2Bsource/libimobiledevice/%2Bbug/1164263