CVE-2019-19274

unknown

Published 2019-12-02 · Modified 2023-11-08

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CVSS v3

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CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS v4 NEW

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not yet in upstream

VIR risk

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Description

typed_ast 1.3.0 and 1.3.1 has a handle_keywordonly_args 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.)

Predictions

Exploit likelihood

30%

Patch ETA

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Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No mitigations published for this CVE yet.

The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.

✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here with source_tier=community-verified.

OS impact

Debian Fixed 2 releases

Version	Status	Fixed in
bullseye	Fixed	`1.4.0-1`
bookworm	Fixed	`1.4.0-1`

Package impact

Ecosystem	Package	Vulnerable	Fixed
PyPI	typed-ast	`>=1.3.0,<1.3.2`	`1.3.2`
PyPI	typed-ast	`<dc317ac9cff859aa84eeabe03fb5004982545b3b\|\|<a4d78362397fc3bced6ea80fbc7b5f4827aec55e\|\|<1.3.2`	`156afcb26c198e162504a57caddfe0acd9ed7dce`

References

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.