Integer Overflow or Wraparound Affecting libexpat/libexpat package, versions [,2.6.3)
Threat Intelligence
Exploit maturity not defined.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published1 Sept 2024
- disclosed30 Aug 2024
- creditTaiYou
Introduced: 30 Aug 2024
CVE-2024-45491 (opens in a new tab)How to fix?
Upgrade libexpat/libexpat to version 2.6.3 or higher.
Overview
Affected versions of this package are vulnerable to Integer Overflow or Wraparound in the dtdCopy() function in xmlparse.c, which doesn't properly check nDefaultAtts values.
Note: This is only exploitable on 32-bit platforms, since UINT_MAX is equal to SIZE_MAX.