CVE-2020-10735
Last modified
CVE-2020-10735 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. A flaw was found in python. In algorithms with quadratic time complexity using non-binary bases, when using int("text"), a system could take 50ms to parse an int string with 100,000 digits and 5s for 1,000,000 digits (float, decimal, int.from_bytes(), and int() for binary bases 2, 4, 8, 16, and 32 are not affected). EPSS estimates a 3.21% chance of exploitation in the next 30 days.
Description
A flaw was found in python. In algorithms with quadratic time complexity using non-binary bases, when using int("text"), a system could take 50ms to parse an int string with 100,000 digits and 5s for 1,000,000 digits (float, decimal, int.from_bytes(), and int() for binary bases 2, 4, 8, 16, and 32 are not affected). The highest threat from this vulnerability is to system availability.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions | Update |
|---|---|---|---|
| Python | Python | >= 3.7.0, < 3.7.14 | — |
| Python | Python | >= 3.8.0, < 3.8.14 | — |
| Python | Python | >= 3.9.0, < 3.9.14 | — |
| Python | Python | >= 3.10.0, < 3.10.7 | — |
| Python | Python | 3.11.0 | Alpha1 |
| Redhat | Quay | 3.0.0 | — |
| Redhat | Software Collections | All versions | — |
| Fedoraproject | Fedora | 35 | — |
| Fedoraproject | Fedora | 36 | — |
| Fedoraproject | Fedora | 37 | — |
| Redhat | Enterprise Linux | 8.0 | — |
References
- http://www.openwall.com/lists/oss-security/2022/09/21/1Third Party Advisory
- http://www.openwall.com/lists/oss-security/2022/09/21/4Mailing List, Third Party Advisory
- https://access.redhat.com/security/cve/CVE-2020-10735Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1834423Issue Tracking, Third Party Advisory
- https://docs.google.com/document/d/1KjuF_aXlzPUxTK4BMgezGJ2Pn7uevfX7g0_mvgHlL7YThird Party Advisory
- https://github.com/python/cpython/issues/95778Patch, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2022/09/21/1Third Party Advisory
- http://www.openwall.com/lists/oss-security/2022/09/21/4Mailing List, Third Party Advisory
- https://access.redhat.com/security/cve/CVE-2020-10735Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1834423Issue Tracking, Third Party Advisory
- https://docs.google.com/document/d/1KjuF_aXlzPUxTK4BMgezGJ2Pn7uevfX7g0_mvgHlL7YThird Party Advisory
- https://github.com/python/cpython/issues/95778Patch, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
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