SB2020121631 - Ubuntu update for unzip

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Main Vulnerability Database SB2020121631

SB2020121631 - Ubuntu update for unzip

Published: December 16, 2020 Updated: April 23, 2025

Security Bulletin ID SB2020121631
Severity
High
Patch available
YES
Number of vulnerabilities 5
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

High 20% Medium 60% Low 20%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 5 secuirty vulnerabilities.


1) Heap-based buffer overflow (CVE-ID: CVE-2018-1000035)

The vulnerability allows a remote attacker to cause DoS condition or execute arbitrary code on the target system.
The weakness exists due to heap-based buffer overflow in the processing of password-protected archives. A remote attacker can trigger memory corruption and cause the service to crash or execute arbitrary code with elevated privileges.

2) Buffer overflow (CVE-ID: CVE-2018-18384)

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary. A remote attacker can create a specially crafted file, trick the victim into opening it with the affected software, trigger memory corruption and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.


3) Resource exhaustion (CVE-ID: CVE-2019-13232)

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

The vulnerability exists due to application does not properly control consumption of internal resources. A remote attacker can trigger resource exhaustion and perform a denial of service (DoS) attack via a specially crafted zip file.


4) Buffer overflow (CVE-ID: CVE-2014-9913)

The vulnerability allows a local non-authenticated attacker to perform service disruption.

Buffer overflow in the list_files function in list.c in Info-Zip UnZip 6.0 allows remote attackers to cause a denial of service (crash) via vectors related to the compression method.


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

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

Install update from vendor's website.

References