SB2019040810 - Ubuntu update for Wget

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Main Vulnerability Database SB2019040810

SB2019040810 - Ubuntu update for Wget

Published: April 8, 2019 Updated: April 11, 2019

Security Bulletin ID SB2019040810
CSH Severity
High
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

High 50% Low 50%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 vulnerabilities.


1) Information disclosure (CVE-ID: CVE-2018-20483)

CWE-ID: CWE-200 - Exposure of sensitive information to an unauthorized actor

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


The vulnerability allows a local attacker to gain access to potentially sensitive information.

The vulnerability exists due to set_file_metadata in xattr.c stores a file's origin URL in the user.xdg.origin.url metadata attribute of the extended attributes of the downloaded file. A local attacker can read this attribute, as demonstrated by getfattr and obtain credentials contained in the URL.

2) Buffer overflow (CVE-ID: CVE-2019-5953)

CWE-ID: CWE-119 - Memory corruption

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


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

The vulnerability exists due to a boundary error when handling Internationalized Resource Identifiers (IRI) during recursive downloading. A remote attacker can trick the victim to connect to a malicious web server, trigger memory corruption and execute arbitrary code on the target system.

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


Remediation

Install update from vendor's website.

References