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Ubuntu: (Multiple Advisories) (CVE-2023-34966): Samba vulnerabilities

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Ubuntu: (Multiple Advisories) (CVE-2023-34966): Samba vulnerabilities

Severity
4
CVSS
(AV:L/AC:M/Au:N/C:P/I:P/A:P)
Published
07/19/2023
Created
07/20/2023
Added
07/20/2023
Modified
08/02/2023

Description

An infinite loop vulnerability was found in Samba's mdssvc RPC service for Spotlight. When parsing Spotlight mdssvc RPC packets sent by the client, the core unmarshalling function sl_unpack_loop() did not validate a field in the network packet that contains the count of elements in an array-like structure. By passing 0 as the count value, the attacked function will run in an endless loop consuming 100% CPU. This flaw allows an attacker to issue a malformed RPC request, triggering an infinite loop, resulting in a denial of service condition.

Solution(s)

  • ubuntu-upgrade-samba

References

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