SB2020012123 - Use-after-free in samba (Alpine package)
Published: January 21, 2020
Security Bulletin ID
SB2020012123
CSH Severity
Low
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) Use-after-free (CVE-ID: CVE-2019-19344)
CWE-ID: CWE-416 - Use After Free
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a remote attacker to gain access to sensitive information.
The vulnerability exists due to a use-after-free error during DNS zone scavenging. A remote attacker can under rare conditions to query DNS and obtain parts of memory that was written into database during zone scavenging process.
Remediation
Install update from vendor's website.