Out-of-bounds read in libarchive (Alpine package)



Published: 2017-02-01
Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2017-5601
CWE-ID CWE-125
Exploitation vector Network
Public exploit N/A
Vulnerable software
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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) Out-of-bounds read

EUVDB-ID: #VU33268

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2017-5601

CWE-ID: CWE-125 - Out-of-bounds read

Exploit availability: No

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 (Alpine package): 3.2.1-r0 - 3.2.2-r0

External links

http://git.alpinelinux.org/aports/commit/?id=656d3e5f5e57245f879ebe44952f4de997a8007d
http://git.alpinelinux.org/aports/commit/?id=0f519752df2395117bc1161340bdfa3811c54eab
http://git.alpinelinux.org/aports/commit/?id=d029d2538b849de290717aa7df42bc809329b0d9
http://git.alpinelinux.org/aports/commit/?id=2633b787490d2fbf07717ea3fbe19834224a1ad9


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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