Vulnerability · Published Jul 6, 2021 · Assigned by mitre
CVE-2021-32559
Medium 6.5
In plain English
A medium-severity security flaw in the pywin32 package (PyPI). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.7% (higher than 78% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)6.5Medium
Exploit odds (30 days)1.7%top 22.3% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
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 & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| PyPI | pywin32 | 301 | GHSA-hwfp-hg2m-9vr2 |
| PyPI | pywin32 | 301 | PYSEC-2021-112 |
Affected products (as reported)
References
- https://github.com/mhammond/pywin32/releases x_refsource_MISC
- https://github.com/fireeye/Vulnerability-Disclosures/blob/master/FEYE-2021-0017/FEYE-2021-0017.md x_refsource_MISC
- https://github.com/mhammond/pywin32/issues/1700 x_refsource_MISC
- https://github.com/mhammond/pywin32/pull/1701 x_refsource_MISC