CVE-2024-49761
rexml: REXML ReDoS vulnerability
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · October 28, 2024
Updated · June 30, 2026
Description
A flaw was found in the ReXML XML toolkit for Ruby. Parsing XML data containing a large number of digits between &# and x...; in a hex numeric character reference (&#x...;) can trigger a regular expression denial of service (ReDoS) condition, leading to a denial of service.
Statement
This vulnerability is rated as a moderate severity because it allows attackers to exploit inefficient regex parsing in hex numeric character references (&#x...;), causing a ReDoS and impacting availability, it requires specific malicious input but does not affect confidentiality or integrity.
Satellite employs multiple versions of ReXML in the Puppet Agent and Server components across varying versions of Satellite:
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In Satellite 6.15 (on RHEL8), the Puppet Agent component uses ReXML version 7.28-0-1 and IS affected.
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In Satellite 6.15 (on RHEL8), the Satellite server component uses ReXML version 7.17.2-1 and is NOT affected.
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In Satellite 6.16 and 6.17 (on RHEL8 and RHEL9), the Puppet Agent component uses ReXML version 8.8.1-1 and is NOT affected.
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In Satellite 6.16 and 6.17 (on RHEL8 and RHEL9), the Satellite server component uses ReXML version 8.6.2-2 and IS affected.
To reiterate, only the Puppet Agent component in Satellite 6.15 and the Satellite server component in Satellite 6.16 and 6.17 are affected. Any other component/Satellite version combinations are considered not-affected.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE-1333 · Inefficient Regular Expression Complexity