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Mageia 9 Advisory MGASA-2023-0340 Critical: Samba Path Traversal DoS

mageia
Calendar Grey December 5, 2023
Dist Mageia Esm H88
Crucial OpenSSL update tackles several security flaws, risking possible unapproved access and disruption of services.
This update fixes the security issues below

Summary

This update fixes the security issues below.
A path traversal vulnerability was identified in Samba when processing client pipe names connecting to Unix domain sockets within a private directory. Samba typically uses this mechanism to connect SMB clients to remote procedure call (RPC) services like SAMR LSA or SPOOLSS, which Samba initiates on demand. However, due to inadequate sanitization of incoming client pipe names, allowing a client to send a pipe name containing Unix directory traversal characters (../). This could result in SMB clients connecting as root to Unix domain sockets outside the private directory. If an attacker or client managed to send a pipe name resolving to an external service using an existing Unix domain socket, it could potentially lead to unauthorized access to the service and consequential adverse events, including compromise or service crashes. (CVE-2023-3961)
A vulnerability was discovered in Samba, where the flaw allows SMB clients to truncate files, e...

Read the Full Advisory

References

- https://bugs.mageia.org/show_bug.cgi?id=32560

- https://bugs.mageia.org/show_bug.cgi?id=28606

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- https://www.cve.org/CVERecord?id=CVE-2023-3961

- https://www.cve.org/CVERecord?id=CVE-2023-4091

- https://www.cve.org/CVERecord?id=CVE-2023-42669

Resolution

SRPMS

- 9/core/samba-4.17.12-1.mga9

Severity
critical
Lowest
Low
Medium
High
Critical

Publication date: 05 Dec 2023
URL: https://advisories.mageia.org/MGASA-2023-0340.html
Type: security
CVE: CVE-2023-3961, CVE-2023-4091, CVE-2023-42669

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