CVE-2023-36464
Infinite Loop when a comment isn't followed by a character in pypdf
Severity Score
5.5
*CVSS v3.1
Exploit Likelihood
*EPSS
Affected Versions
*CPE
Public Exploits
1
*Multiple Sources
Exploited in Wild
-
*KEV
Decision
-
*SSVC
Descriptions
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"
")` in `pypdf/generic/_data_structures.py` to `while peek not in (b"\r", b"
", b"")`.
*Credits:
N/A
CVSS Scores
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
* Common Vulnerability Scoring System
SSVC
- Decision:-
Exploitation
Automatable
Tech. Impact
* Organization's Worst-case Scenario
Timeline
- 2023-06-21 CVE Reserved
- 2023-06-27 CVE Published
- 2024-07-29 EPSS Updated
- 2024-08-02 CVE Updated
- 2024-08-02 First Exploit
- ---------- Exploited in Wild
- ---------- KEV Due Date
CWE
- CWE-835: Loop with Unreachable Exit Condition ('Infinite Loop')
CAPEC
References (3)
| URL | Tag | Source |
|---|
| URL | Date | SRC |
|---|---|---|
| https://github.com/py-pdf/pypdf/security/advisories/GHSA-4vvm-4w3v-6mr8 | 2024-08-02 |
| URL | Date | SRC |
|---|---|---|
| https://github.com/py-pdf/pypdf/pull/1828 | 2023-07-06 | |
| https://github.com/py-pdf/pypdf/pull/969 | 2023-07-06 |
| URL | Date | SRC |
|---|
Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Pypdf Project Search vendor "Pypdf Project" | Pypdf Search vendor "Pypdf Project" for product "Pypdf" | < 3.9.0 Search vendor "Pypdf Project" for product "Pypdf" and version " < 3.9.0" | - |
Affected
| ||||||
| Pypdf2 Project Search vendor "Pypdf2 Project" | Pypdf2 Search vendor "Pypdf2 Project" for product "Pypdf2" | >= 2.2.0 Search vendor "Pypdf2 Project" for product "Pypdf2" and version " >= 2.2.0" | - |
Affected
| ||||||