SB2020090347 - Infinite loop in busybox (Alpine package)
Published: September 3, 2020
Security Bulletin ID
SB2020090347
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Infinite loop (CVE-ID: CVE-2018-14629)
CWE-ID: CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a local unauthenticated attacker to cause DoS condition.
The vulnerability exists due to infinite query recursion caused by CNAME loops. A local attacker can add any dns record via ldap using the ldbadd tool, trigger infinite loop and cause the server to crash.
Remediation
Install update from vendor's website.