CVE-2024-45492
libexpat: integer overflow
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · August 30, 2024
Updated · October 31, 2026
Description
A flaw was found in libexpat's internal nextScaffoldPart function in xmlparse.c. It can have an integer overflow for m_groupSize on 32-bit platforms where UINT_MAX equals SIZE_MAX.
Statement
CVE-2024-45492 is categorized as a Moderate severity issue rather than Important due to the specific conditions required for exploitation and the limited scope of impact. While an integer overflow in the nextScaffoldPart function on 32-bit platforms can potentially lead to denial of service (DoS) or, in rare cases, arbitrary code execution, the vulnerability is platform-specific, affecting only 32-bit architectures with particular handling of UINT_MAX and SIZE_MAX. Additionally, exploiting the overflow for arbitrary code execution would require precise manipulation of memory, making it a less likely attack vector. The primary risk of DoS, without guaranteed escalation to remote code execution, further justifies the moderate severity classification.
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
Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
CVSS / CWE
CVSS 3.1 · 6.2CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE-190 · Integer Overflow or Wraparound