CyberSecBulletin
CVE-2023-49933NVD status: Modified

Slurm: Improper Enforcement of Message Integrity During Transmission in a Communication Channel

Published Updated By the CyberSecBulletin desk

CVE-2023-49933 is a high-severity improper enforcement of message integrity during transmission in a communication channel vulnerability in Slurm from SchedMD, with a CVSS 3.1 base score of 7.5 out of 10. It can be exploited remotely over the network by an unauthenticated attacker, without any action from a user. The record lists versions 22.05.12, 23.02.7 as the first without the flaw, so updating Slurm to one of those releases or later removes the exposure. There is no confirmed exploitation so far. EPSS estimates a 0.38% chance of exploitation within 30 days, which is low compared with other CVEs.

Next patch cycle

High severity with no evidence of exploitation so far.

What to do

  1. Update Slurm to 22.05.12 or 23.02.7, whichever matches your release line, or a later version.
  2. Read the advisory on lists.schedmd.com for workarounds and exact fixed builds.
  3. Until you can update, restrict network access to the affected service so it is not reachable from untrusted networks.

Affected products and versions

VendorProductAffected versionsFixed in
SchedmdSlurm22.05 up to, but not including, 22.05.12; 23.02 up to, but not including, 23.02.7; 23.1122.05.12, 23.02.7

Version data comes from NVD's product matching. Confirm against the vendor advisory before deciding you are unaffected.

How the severity score breaks down

Attack vector
NetworkCan be exploited remotely over a network, including the internet.
Attack complexity
LowNo special conditions are needed; the attack works reliably.
Privileges required
NoneNo account or login is needed.
User interaction
NoneNo action by a victim is required.
Scope
UnchangedImpact stays within the vulnerable component.
Confidentiality
NoneNo data is disclosed.
Integrity
HighData or code can be modified at will.
Availability
NoneAvailability is not affected.

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N. Scored by NVD.

Official description

An issue was discovered in SchedMD Slurm 22.05.x, 23.02.x, and 23.11.x. There is Improper Enforcement of Message Integrity During Transmission in a Communication Channel. This allows attackers to modify RPC traffic in a way that bypasses message hash checks. The fixed versions are 22.05.11, 23.02.7, and 23.11.1.

Source: the CVE record as published by its numbering authority, via NVD and CVE.org.

The underlying weakness: Improper Enforcement of Message Integrity During Transmission in a Communication Channel

The product establishes a communication channel with an endpoint and receives a message from that endpoint, but it does not sufficiently ensure that the message was not modified during transmission.

More Improper Enforcement of Message Integrity During Transmission in a Communication Channel vulnerabilities (CWE-924)

Timeline

  1. CVE record published.
  2. Record last changed materially (score, affected products, status or references).

References

Other vulnerabilities in Slurm

All Slurm vulnerabilities

Recent Improper Enforcement of Message Integrity During Transmission in a Communication Channel vulnerabilities

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