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CVE Vulnerabilities

CVE-2024-49761

Inefficient Regular Expression Complexity

Published: Oct 28, 2024 | Modified: Nov 03, 2025
CVSS 3.x
7.5
HIGH
Source:
NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 2.x
RedHat/V2
RedHat/V3
7.5 MODERATE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Ubuntu
MEDIUM
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Additional information
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2024-49761
CWEhttps://cwe.mitre.org/data/definitions/1333.html

REXML is an XML toolkit for Ruby. The REXML gem before 3.3.9 has a ReDoS vulnerability when it parses an XML that has many digits between &# and x…; in a hex numeric character reference (&#x…;). This does not happen with Ruby 3.2 or later. Ruby 3.1 is the only affected maintained Ruby. The REXML gem 3.3.9 or later include the patch to fix the vulnerability.

Weakness

The product uses a regular expression with an inefficient, possibly exponential worst-case computational complexity that consumes excessive CPU cycles.

Affected Software

NameVendorStart VersionEnd Version
RexmlRuby-lang*3.3.9 (excluding)
Red Hat Enterprise Linux 8RedHatruby:3.1-8100020241127152928.489197e6*
Red Hat Enterprise Linux 8RedHatruby:2.5-8100020241127152844.489197e6*
Red Hat Enterprise Linux 8RedHatpcs-0:0.10.18-2.el8_10.6*
Red Hat Enterprise Linux 8.2 Advanced Update SupportRedHatruby:2.5-8020020241211125628.4cda2c84*
Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update SupportRedHatruby:2.5-8040020241211104816.522a0ee4*
Red Hat Enterprise Linux 8.4 Telecommunications Update ServiceRedHatruby:2.5-8040020241211104816.522a0ee4*
Red Hat Enterprise Linux 8.4 Update Services for SAP SolutionsRedHatruby:2.5-8040020241211104816.522a0ee4*
Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update SupportRedHatruby:2.5-8060020241211101132.ad008a3a*
Red Hat Enterprise Linux 8.6 Telecommunications Update ServiceRedHatruby:2.5-8060020241211101132.ad008a3a*
Red Hat Enterprise Linux 8.6 Telecommunications Update ServiceRedHatpcs-0:0.10.12-6.el8_6.9*
Red Hat Enterprise Linux 8.6 Update Services for SAP SolutionsRedHatruby:2.5-8060020241211101132.ad008a3a*
Red Hat Enterprise Linux 8.6 Update Services for SAP SolutionsRedHatpcs-0:0.10.12-6.el8_6.9*
Red Hat Enterprise Linux 8.8 Extended Update SupportRedHatruby:3.1-8080020241210144941.63b34585*
Red Hat Enterprise Linux 8.8 Extended Update SupportRedHatruby:2.5-8080020241211080135.63b34585*
Red Hat Enterprise Linux 8.8 Telecommunications Update ServiceRedHatpcs-0:0.10.15-4.el8_8.8*
Red Hat Enterprise Linux 8.8 Update Services for SAP SolutionsRedHatpcs-0:0.10.15-4.el8_8.8*
Red Hat Enterprise Linux 9RedHatruby-0:3.0.7-163.el9_5*
Red Hat Enterprise Linux 9RedHatruby:3.1-9050020241127153348.9*
Red Hat Enterprise Linux 9.0 Update Services for SAP SolutionsRedHatruby-0:3.0.4-160.1.el9_0*
Red Hat Enterprise Linux 9.0 Update Services for SAP SolutionsRedHatpcs-0:0.11.1-10.el9_0.6*
Red Hat Enterprise Linux 9.2 Extended Update SupportRedHatruby-0:3.0.4-161.el9_2.2*
Red Hat Enterprise Linux 9.2 Extended Update SupportRedHatruby:3.1-9020020241211060845.9*
Red Hat Enterprise Linux 9.4 Extended Update SupportRedHatruby-0:3.0.7-162.el9_4.1*
Red Hat Enterprise Linux 9.4 Extended Update SupportRedHatruby:3.1-9040020241205144759.9*
Red Hat Satellite 6.15 for RHEL 8RedHatpuppet-agent-0:7.34.0-4.el8sat*
Red Hat Satellite 6.15 for RHEL 8RedHatpuppet-agent-0:7.34.0-4.el8sat*
Red Hat Satellite 6.16 for RHEL 8RedHatpuppet-agent-0:8.8.1-2.el8sat*
Red Hat Satellite 6.16 for RHEL 8RedHatpuppetserver-0:8.6.2-3.el8sat*
Red Hat Satellite 6.16 for RHEL 8RedHatrubygem-foreman_rh_cloud-0:10.0.7-1.el8sat*
Red Hat Satellite 6.16 for RHEL 8RedHatrubygem-foreman_webhooks-0:3.2.4-1.el8sat*
Red Hat Satellite 6.16 for RHEL 8RedHatsatellite-0:6.16.5.3-1.el8sat*
Red Hat Satellite 6.16 for RHEL 9RedHatpuppet-agent-0:8.8.1-2.el9sat*
Red Hat Satellite 6.16 for RHEL 9RedHatpuppetserver-0:8.6.2-3.el9sat*
Red Hat Satellite 6.16 for RHEL 9RedHatrubygem-foreman_rh_cloud-0:10.0.7-1.el9sat*
Red Hat Satellite 6.16 for RHEL 9RedHatrubygem-foreman_webhooks-0:3.2.4-1.el9sat*
Red Hat Satellite 6.16 for RHEL 9RedHatsatellite-0:6.16.5.3-1.el9sat*
Red Hat Satellite 6.17 for RHEL 9RedHatpuppet-agent-0:8.8.1-2.el9sat*
Red Hat Satellite 6.17 for RHEL 9RedHatpuppetserver-0:8.6.2-3.el9sat*
Red Hat Satellite 6.17 for RHEL 9RedHatpuppet-agent-0:8.8.1-2.el9sat*
Red Hat Satellite 6.17 for RHEL 9RedHatpuppetserver-0:8.6.2-3.el9sat*
Satellite Client 6 for RHEL 8RedHatpuppet-agent-0:7.34.0-3.el8sat*
Satellite Client 6 for RHEL 9RedHatpuppet-agent-0:7.34.0-3.el9sat*
JrubyUbuntufocal*
JrubyUbuntuoracular*
JrubyUbuntutrusty/esm*
Ruby2.3Ubuntuesm-infra/xenial*
Ruby2.5Ubuntuesm-infra/bionic*
Ruby2.7Ubuntuesm-infra/focal*
Ruby2.7Ubuntufocal*
Ruby3.0Ubuntujammy*
Ruby3.2Ubuntunoble*
Ruby3.3Ubuntudevel*
Ruby3.3Ubuntuoracular*
Ruby3.3Ubuntuplucky*
Ruby3.3Ubuntuquesting*

Extended Description

	  Attackers can create crafted inputs that
	  intentionally cause the regular expression to use
	  excessive backtracking in a way that causes the CPU
	  consumption to spike.

Potential Mitigations

References

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