SB2021100505 - Multiple vulnerabilities in cflinuxfs3

CSH
CYBERSECURITY HELP
Sign In REGISTER

Main Vulnerability Database SB2021100505

SB2021100505 - Multiple vulnerabilities in cflinuxfs3

Published: October 5, 2021

Security Bulletin ID SB2021100505
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Remote access
Highest impact Information disclosure

Breakdown by Severity

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

Description

This security bulletin contains information about 2 vulnerabilities.


1) Symlink attack (CVE-ID: CVE-2019-3902)

CWE-ID: CWE-61 - UNIX Symbolic Link (Symlink) Following

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


The vulnerability allows a remote user to escalate privileges on the system.

The vulnerability exists due to a symlink following issue. A remote user can create a specially crafted symbolic link to and write files outside a repository.


2) Out-of-bounds read (CVE-ID: CVE-2018-17983)

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

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


The vulnerability allows a local attacker to obtain potentially sensitive information or cause DoS condition on the target system.

The vulnerability exists in the cext/manifest.c file due to improper parsing of manifest entries. A remote attacker can send a manifest entry that submits malicious input, trigger an out-of-bounds read condition to access sensitive information or cause a denial of service (DoS) condition.


Remediation

Install update from vendor's website.

References