VulnerabilityModified
CVE-2019-19275
typed_ast 1.3.0 and 1.3.1 has an ast_for_arguments out-of-bounds read.
HIGH 7.5EPSS 3.28%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (3.28%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
typed_ast 1.3.0 and 1.3.1 has an ast_for_arguments out-of-bounds read. An attacker with the ability to cause a Python interpreter to parse Python source (but not necessarily execute it) may be able to crash the interpreter process. This could be a concern, for example, in a web-based service that parses (but does not execute) Python code. (This issue also affected certain Python 3.8.0-alpha prereleases.)
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 3.28% probability · 88th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-125
- Affected
- python/typed ast
- Source
- cve@mitre.org
References
- https://bugs.python.org/issue36495Patch, Vendor Advisory
- https://github.com/python/cpython/commit/a4d78362397fc3bced6ea80fbc7b5f4827aec55ePatch, Third Party Advisory
- https://github.com/python/cpython/commit/dcfcd146f8e6fc5c2fc16a4c192a0c5f5ca8c53cPatch, Third Party Advisory
- https://github.com/python/typed_ast/commit/156afcb26c198e162504a57caddfe0acd9ed7dcePatch, Third Party Advisory
- https://github.com/python/typed_ast/commit/dc317ac9cff859aa84eeabe03fb5004982545b3bPatch, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LG5H4Q6LFVRX7SFXLBEJMNQFI4T5SCEA/
- https://bugs.python.org/issue36495Patch, Vendor Advisory
- https://github.com/python/cpython/commit/a4d78362397fc3bced6ea80fbc7b5f4827aec55ePatch, Third Party Advisory
- https://github.com/python/cpython/commit/dcfcd146f8e6fc5c2fc16a4c192a0c5f5ca8c53cPatch, Third Party Advisory
- https://github.com/python/typed_ast/commit/156afcb26c198e162504a57caddfe0acd9ed7dcePatch, Third Party Advisory
- https://github.com/python/typed_ast/commit/dc317ac9cff859aa84eeabe03fb5004982545b3bPatch, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LG5H4Q6LFVRX7SFXLBEJMNQFI4T5SCEA/
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.