SB2020012122 - Improper input validation in samba (Alpine package)
Published: January 21, 2020
Security Bulletin ID
SB2020012122
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Adjecent network
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Improper input validation (CVE-ID: CVE-2019-14907)
CWE-ID: CWE-20 - Improper input validation
CVSSv4: CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to incorrect processing of certain user-controlled string, if logging is enabled at level 3 or above. A remote attacker can send specially crafted data to the Samba DC and terminate Samba RPC server.Remediation
Install update from vendor's website.
References
- https://git.alpinelinux.org/aports/commit/?id=515e98e6bdc49a7db3aa081e1de4fd5f727bb851
- https://git.alpinelinux.org/aports/commit/?id=46ba7ec46d3cb4084489531ce10e71e17963495b
- https://git.alpinelinux.org/aports/commit/?id=0ed412d466e679ac0e649cf8c413b67f729bc5a8
- https://git.alpinelinux.org/aports/commit/?id=b3a750a9f748a73e74fc78b2e49eb796e5496960
- https://git.alpinelinux.org/aports/commit/?id=fddd8a3d858001f0e0d27c7fd9e1ffddf8ccdd2e