#VU33148 Out-of-bounds read in UnZip - CVE-2015-7696

Vulnerability identifier: #VU33148

Vulnerability risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2015-7696

CWE-ID: CWE-125

Exploitation vector: Network

Exploit availability: No

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

Vendor: Info-ZIP

Description

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

The vulnerability exists due to a boundary error in Info-ZIP UnZip 6.0. A remote attacker can perform a denial of service (heap-based buffer over-read and application crash) or possibly execute arbitrary code via a crafted password-protected ZIP archive, possibly related to an Extra-Field size value.

Mitigation
Update to version 6.10b.

Vulnerable software versions

UnZip: 6.0

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External links
https://www.debian.org/security/2015/dsa-3386
https://www.openwall.com/lists/oss-security/2015/09/07/4
https://www.openwall.com/lists/oss-security/2015/09/15/6
https://www.openwall.com/lists/oss-security/2015/09/21/6
https://www.openwall.com/lists/oss-security/2015/10/11/5
https://www.securityfocus.com/bid/76863
https://www.securitytracker.com/id/1034027
https://www.ubuntu.com/usn/USN-2788-1
https://www.ubuntu.com/usn/USN-2788-2

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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.