SB2019102931 - Path traversal in samba (Alpine package)
Published: October 29, 2019
Security Bulletin ID
SB2019102931
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Path traversal (CVE-ID: CVE-2019-10218)
The vulnerability allows a remote attacker to perform directory traversal attacks.
The vulnerability exists due to input validation error when processing directory traversal sequences in filenames within Samba client code (libsmbclient). A malicious SMB server can return a filename to the client containing directory traversal characters and force the client to read or write data to local files.
Successful exploitation of the vulnerability may allow an attacker to overwrite arbitrary files on the client.
Remediation
Install update from vendor's website.
References
- https://git.alpinelinux.org/aports/commit/?id=2eff8a828fa8e0df24702602a7a3280016efebf3
- https://git.alpinelinux.org/aports/commit/?id=4da1ee1a718f0e9dfd6a6e91f9348fa96a58567d
- https://git.alpinelinux.org/aports/commit/?id=b8c29bc4a15eb1bcdc0504834b34f45348972ae1
- https://git.alpinelinux.org/aports/commit/?id=1a4e1a61106f66fdcf65ec33a37a99cea23db966