Link following in lxc (Alpine package)



Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2015-1331
CWE-ID CWE-59
Exploitation vector Local
Public exploit N/A
Vulnerable software
 lxc (Alpine package)
Operating systems & Components / Operating system package or component

Vendor Alpine Linux Development Team

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Link following

EUVDB-ID: #VU33646

Risk: Low

CVSSv4.0: 4.6 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2015-1331

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

Exploit availability: No

Description

The vulnerability allows a local non-authenticated attacker to manipulate data.

lxclock.c in LXC 1.1.2 and earlier allows local users to create arbitrary files via a symlink attack on /run/lock/lxc/*.

Mitigation

Install update from vendor's website.

Vulnerable software versions

lxc (Alpine package): 1.0.6-r0

CPE2.3 External links

https://git.alpinelinux.org/aports/commit/?id=ebe6ea928042c91cc22953e22de1231d5d8156f3
https://git.alpinelinux.org/aports/commit/?id=b9333a8dc06ac07169fc3199b93eee3aa48dcf93
https://git.alpinelinux.org/aports/commit/?id=aa2c942cd3784fe7317d21a54de2facc7fc291cf


Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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