SB2019032104 - Denial of service in Info-ZIP UnZip

Description

This security bulletin contains information about 1 vulnerability.

1) Input validation error (CVE-ID: CVE-2016-9844)

CWE-ID: CWE-20 - Improper input validation

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P/U:Green

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

The vulnerability exists due to insufficient validation of user-supplied input in the zi_short() function in zipinfo.c when processing a large compression method value in the central directory file header. A remote attacker can pass a specially crafted array to the application and trigger denial of service (DoS) condition.

Remediation

Cybersecurity Help is not aware of any official remediation provided by the vendor.

References

• http://www.openwall.com/lists/oss-security/2016/12/05/13
• http://www.openwall.com/lists/oss-security/2016/12/05/19
• http://www.openwall.com/lists/oss-security/2016/12/05/20
• http://www.securityfocus.com/bid/94728
• https://bugs.launchpad.net/ubuntu/+source/unzip/+bug/1643750