SB2021041516 - Access of Memory Location After End of Buffer in DNS Module of Siemens Nucleus Products
Published: April 15, 2021
Security Bulletin ID
SB2021041516
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Information disclosure
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Access of Memory Location After End of Buffer (CVE-ID: CVE-2021-25677)
CWE-ID: CWE-788 - Access of Memory Location After End of Buffer
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
The vulnerability allows a remote attacker to compromise the target system.
The vulnerability exists due to the DNS client does not properly randomize DNS transaction IDs. A remote attacker can poison the DNS cache or spoof DNS resolving.
Remediation
Install update from vendor's website.