CyberSecBulletin
CVE-2024-0507NVD status: Modified

Enterprise Server: Improper Neutralization of Special Elements used in a Command

Published Updated By the CyberSecBulletin desk

CVE-2024-0507 is a high-severity improper neutralization of special elements used in a command vulnerability in Enterprise Server from GitHub, with a CVSS 3.1 base score of 8.8 out of 10. It can be exploited remotely over the network by an attacker with a low-privileged account, without any action from a user. Affected Enterprise Server versions: 3.8.0 through 3.8.12; 3.9.0 through 3.9.7; 3.10.0 through 3.10.4, and others listed below. The record does not name a fixed version, so check the vendor advisory. There is no confirmed exploitation so far. EPSS estimates a 65.8% chance of exploitation within 30 days, which is in the top 0.72% of all scored CVEs.

Patch now

Exploitation in the next 30 days is more likely than not, according to EPSS.

What to do

  1. Check which version of Enterprise Server you run against the affected versions below, and install the vendor's latest release.

Affected products and versions

VendorProductAffected versionsFixed in
GitHubEnterprise Server3.8.0 through 3.8.12; 3.9.0 through 3.9.7; 3.10.0 through 3.10.4; 3.11.0 through 3.11.2Not stated

Version data comes from the organisation that assigned the CVE. 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
LowA basic user account is enough.
User interaction
NoneNo action by a victim is required.
Scope
UnchangedImpact stays within the vulnerable component.
Confidentiality
HighAll data handled by the component can be read.
Integrity
HighData or code can be modified at will.
Availability
HighThe component can be taken down completely.

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

Scoring systemScoreSeverityScored by
CVSS 3.16.5MediumCNA (github.com)
CVSS 3.18.8HighNVD

Official description

An attacker with access to a Management Console user account with the editor role could escalate privileges through a command injection vulnerability in the Management Console. This vulnerability affected all versions of GitHub Enterprise Server and was fixed in versions 3.11.3, 3.10.5, 3.9.8, and 3.8.13 This vulnerability was reported via the GitHub Bug Bounty program.

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

The underlying weakness: Improper Neutralization of Special Elements used in a Command

The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component.

How developers prevent this class of flaw

  • If at all possible, use library calls rather than external processes to recreate the desired functionality.
  • If possible, ensure that all external commands called from the program are statically created.
  • Run time: Run time policy enforcement may be used in an allowlist fashion to prevent use of any non-sanctioned commands.

More Improper Neutralization of Special Elements used in a Command vulnerabilities (CWE-77)

Timeline

  1. CVE record published.
  2. CISA published its SSVC assessment (exploitation: none, automatable: no, technical impact: total).
  3. Record last changed materially (score, affected products, status or references).

References

Other vulnerabilities in Enterprise Server

All Enterprise Server vulnerabilities

Recent Improper Neutralization of Special Elements used in a Command vulnerabilities

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