CVE-2023-36464
In affected versions an attacker may craft a PDF which leads to an infinite loop if `__parse_content_stream` is executed.
Does this matter?
Lower severity and a low EPSS score (0.35%). Track it; it rarely justifies an emergency change on its own.
Description
pypdf is an open source, pure-python PDF library. In affected versions an attacker may craft a PDF which leads to an infinite loop if `__parse_content_stream` is executed. That is, for example, the case if the user extracted text from such a PDF. This issue was introduced in pull request #969 and resolved in pull request #1828. Users are advised to upgrade. Users unable to upgrade may modify the line `while peek not in (b"\r", b"\n")` in `pypdf/generic/_data_structures.py` to `while peek not in (b"\r", b"\n", b"")`.
- CVSS 3.1
- 5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
- EPSS
- 0.35% probability · 29th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-835
- Affected
- pypdf project/pypdf · pypdf2 project/pypdf2
- Source
- security-advisories@github.com
References
- https://github.com/py-pdf/pypdf/pull/1828Patch
- https://github.com/py-pdf/pypdf/pull/969Issue Tracking, Patch
- https://github.com/py-pdf/pypdf/security/advisories/GHSA-4vvm-4w3v-6mr8Exploit, Patch
- https://github.com/py-pdf/pypdf/pull/1828Patch
- https://github.com/py-pdf/pypdf/pull/969Issue Tracking, Patch
- https://github.com/py-pdf/pypdf/security/advisories/GHSA-4vvm-4w3v-6mr8Exploit, Patch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.