Riskcovery

CVE-2023-34966

Samba: infinite loop in mdssvc rpc service for spotlight

State
Published
Severity
7.5 High
Published
Jul 20, 2023
Updated
Nov 20, 2025
Reserved
Jun 7, 2023

Read the record on cve.org

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.

Scores

CVSSScoreVectorSource
3.17.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hredhat

Weaknesses

  • CWE-835 Loop with Unreachable Exit Condition ('Infinite Loop')

Affected Products

ProductVersions
Red Hat Enterprise Linux 8Red Hat
  • 0:4.18.6-1.el8 and laterNot affected
Red Hat Enterprise Linux 8Red Hat
  • 0:4.18.6-1.el8 and laterNot affected
Red Hat Enterprise Linux 8.6 Extended Update SupportRed Hat
  • 0:4.15.5-15.el8_6 and laterNot affected
Red Hat Enterprise Linux 8.8 Extended Update SupportRed Hat
  • 0:4.17.5-5.el8_8 and laterNot affected
Red Hat Enterprise Linux 9Red Hat
  • 0:4.18.6-100.el9 and laterNot affected
Red Hat Enterprise Linux 9Red Hat
  • 0:4.18.6-100.el9 and laterNot affected
Red Hat Enterprise Linux 9.2 Extended Update SupportRed Hat
  • 0:4.17.5-105.el9_2 and laterNot affected
Red Hat Virtualization 4 for Red Hat Enterprise Linux 8Red Hat
  • 0:4.15.5-15.el8_6 and laterNot affected
Red Hat Enterprise Linux 6Red Hat
    Red Hat Enterprise Linux 6Red Hat
      Red Hat Enterprise Linux 7Red Hat
        Red Hat Storage 3Red Hat

          References

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