Data Handling in libarchive (Alpine package)



Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2016-5418
CWE-ID CWE-19
Exploitation vector Network
Public exploit N/A
Vulnerable software
 libarchive (Alpine package)
Operating systems & Components / Operating system package or component

Vendor Alpine Linux Development Team

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Data Handling

EUVDB-ID: #VU33271

Risk: Medium

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

CVE-ID: CVE-2016-5418

CWE-ID: CWE-19 - Data Handling

Exploit availability: No

Description

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

The sandboxing code in libarchive 3.2.0 and earlier mishandles hardlink archive entries of non-zero data size, which might allow remote attackers to write to arbitrary files via a crafted archive file.

Mitigation

Install update from vendor's website.

Vulnerable software versions

libarchive (Alpine package): 3.0.2-r0 - 3.2.2-r2

CPE2.3 External links

http://git.alpinelinux.org/aports/commit/?id=87822f4ac4adaaafbbee3ffe58ab6eebdc12907e
http://git.alpinelinux.org/aports/commit/?id=5ba95943165e8352e1ad40a3184506459bae0d11
http://git.alpinelinux.org/aports/commit/?id=9ade53deffe551b45b9ac472b5d6ea0217f15a12


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

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



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