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TI-2023-09806 Aliases CVE-2023-24021GHSA-845r-7x4c-q8qf

Incorrect handling of '\0' bytes in file uploads in ModSecurity before 2.9.7 may allow…

Priority MEDIUM 41CWE-170Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
None · High · None
Fix status
Partial Red Hat: 3 fixed, 4 without a fix

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and Red Hat.

Summary

Incorrect handling of '\0' bytes in file uploads in ModSecurity before 2.9.7 may allow for Web Application Firewall bypasses and buffer over-reads on the Web Application Firewall when executing rules that read the FILES_TMP_CONTENT collection.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00931 60th percentileScored 2026-11-07
Fix Partial Red Hat: 2 advisoriesRed Hat: 3 fixed, 4 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:trustwave:modsecurity:*:*:*:*:*:*:*:*before 2.9.7VulnerableTrustwave
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*10.0VulnerableDebian
  • cpe:2.3:a:trustwave:modsecurity:*:*:*:*:*:*:*:* Versions before 2.9.7 Vulnerable ·Trustwave
  • cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* Versions 10.0 Vulnerable ·Debian

Remediation

Red Hat 2 advisories

  • RHSA-2023:4629 Released 2023-08-15 · Red Hat rating Moderate
    Red Hat JBoss Core Services Apache HTTP Server 2.4.57 security update
    • Red Hat JBoss Core Services on RHEL 7 Server jbcs-httpd24-apr-1.7.0-8.el7jbcs, jbcs-httpd24-apr-devel-1.7.0-8.el7jbcs, jbcs-httpd24-curl-8.2.1-1.el7jbcs +12
    • Red Hat JBoss Core Services on RHEL 8 jbcs-httpd24-apr-1.7.0-8.el8jbcs, jbcs-httpd24-apr-devel-1.7.0-8.el8jbcs, jbcs-httpd24-curl-8.2.1-1.el8jbcs +12
  • RHSA-2023:4628 Released 2023-08-15 · Red Hat rating Moderate
    Red Hat JBoss Core Services Apache HTTP Server 2.4.57 security update
    • Red Hat JBoss Core Services 2.4.57

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux 7AffectedNo fix planned: Out of support scope
Red Hat Enterprise Linux 8AffectedNo fix planned: Will not fix
Red Hat Enterprise Linux 9AffectedNo fix planned: Will not fix
Red Hat Software CollectionsAffectedNo fix planned: Will not fix
Red Hat JBoss Core Services 2.4.57Fixed RHSA-2023:4628
Red Hat JBoss Core Services on RHEL 7 ServerFixed RHSA-2023:4629
Red Hat JBoss Core Services on RHEL 8Fixed RHSA-2023:4629
Not affected: 2 products
  • Red Hat JBoss Core Services on RHEL 7 Server
  • Red Hat JBoss Core Services on RHEL 8

Timeline

  1. 2026-10-02 Threatist record created from CVE-2023-24021
  2. 2026-10-03 Alias added: GHSA-845r-7x4c-q8qf
  3. 2026-10-09 Fix available: RHSA-2023:4628 · Red Hat
  4. 2026-11-05 Fix available: Red Hat JBoss Core Services 2.4.57 · Red Hat

References

Patch 2

Advisory 4

Other 1

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences