high6.5
CVE-2021-32559
Integer overflow in pywin32
Impact
An integer overflow exists in pywin32 prior to version b301 when adding an access control entry (ACE) to an access control list (ACL) that would cause the size to be greater than 65535 bytes. An attacker who successfully exploited this vulnerability could crash the vulnerable process.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| pip | pywin32 | < 301 | 301 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Mhammond | Pywin32 | before 301 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/fireeye/Vulnerability-Disclosures/blob/master/FEYE-2021-0017/FEYE-2021-0017.md
- https://github.com/mhammond/pywin32/issues/1700
- https://github.com/mhammond/pywin32/pull/1701
- https://github.com/mhammond/pywin32/releases
- https://github.com/advisories/GHSA-hwfp-hg2m-9vr2
- https://nvd.nist.gov/vuln/detail/CVE-2021-32559
- https://github.com/pypa/advisory-database/tree/main/vulns/pywin32/PYSEC-2021-112.yaml