#VU33268 Out-of-bounds read in libarchive - CVE-2017-5601

Vulnerability identifier: #VU33268

Vulnerability risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2017-5601

CWE-ID: CWE-125

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
libarchive
Client/Desktop applications / Software for archiving

Vendor: libarchive

Description

The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.

An error in the lha_read_file_header_1() function (archive_read_support_format_lha.c) in libarchive 3.2.2 allows remote attackers to trigger an out-of-bounds read memory access and subsequently cause a crash via a specially crafted archive.

Mitigation
Install update from vendor's website.

Vulnerable software versions

libarchive: 3.2.2

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External links
https://www.securityfocus.com/bid/95837
https://www.securitytracker.com/id/1037974
https://github.com/libarchive/libarchive/commit/98dcbbf0bf4854bf987557e55e55fff7abbf3ea9
https://lists.debian.org/debian-lts-announce/2018/11/msg00037.html
https://secunia.com/secunia_research/2017-3/

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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.