Vulnerability Details : CVE-2024-45491
An issue was discovered in libexpat before 2.6.3. dtdCopy in xmlparse.c can have an integer overflow for nDefaultAtts on 32-bit platforms (where UINT_MAX equals SIZE_MAX).
Vulnerability category: Overflow
Products affected by CVE-2024-45491
- cpe:2.3:a:libexpat_project:libexpat:*:*:*:*:*:*:*:*
- cpe:2.3:a:libexpat_project:libexpat:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2024-45491
0.08%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 24 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2024-45491
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
7.3
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L |
3.9
|
3.4
|
134c704f-9b21-4f2e-91b3-4a467353bcc0 | 2024-08-30 |
|
9.8
|
CRITICAL | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
3.9
|
5.9
|
NIST | 2024-09-04 |
CWE ids for CVE-2024-45491
-
The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.Assigned by:
- 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary)
- nvd@nist.gov (Primary)
References for CVE-2024-45491
-
https://github.com/libexpat/libexpat/pull/891
[CVE requested] lib: Detect integer overflow in `dtdCopy` (fixes #888) by hartwork · Pull Request #891 · libexpat/libexpat · GitHubPatch
-
https://github.com/libexpat/libexpat/issues/888
TBA security issue: 2 of 3 · Issue #888 · libexpat/libexpat · GitHubIssue Tracking
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