CVE-2021-28677
python-pillow: Excessive CPU use in EPS image reader
Severity Score
Exploit Likelihood
Affected Versions
Public Exploits
0Exploited in Wild
-Decision
Descriptions
An issue was discovered in Pillow before 8.2.0. For EPS data, the readline implementation used in EPSImageFile has to deal with any combination of \r and
as line endings. It used an accidentally quadratic method of accumulating lines while looking for a line ending. A malicious EPS file could use this to perform a DoS of Pillow in the open phase, before an image was accepted for opening.
Se ha detectado un problema en Pillow versiones anteriores a 8.2.0,. Para los datos EPS, la implementación readline usada en la función EPSImageFile tiene que tratar con cualquier combinación de \r y
como finales de línea. Usaba un método accidentalmente cuadrático de acumulación de líneas mientras buscaba un final de línea. Un archivo EPS malicioso podría usar esto para llevar a cabo un DoS de Pillow en la fase de apertura, antes de que una imagen fuera aceptada para su apertura
A flaw was found in python-pillow. The readline used in EPS has to deal with any combination of \r and
as line endings. It accidentally used a quadratic method of accumulating lines while looking for a line ending. A malicious EPS file could use this to perform a denial-of-service of Pillow in the open phase, before an image was accepted for opening.
The python-pillow packages contain a Python image processing library that provides extensive file format support, an efficient internal representation, and powerful image-processing capabilities. Issues addressed include buffer over-read, buffer overflow, denial of service, and out of bounds read vulnerabilities.
CVSS Scores
SSVC
- Decision:-
Timeline
- 2021-03-18 CVE Reserved
- 2021-05-19 CVE Published
- 2024-08-03 CVE Updated
- 2025-03-30 EPSS Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-20: Improper Input Validation
CAPEC
References (7)
URL | Tag | Source |
---|---|---|
https://lists.debian.org/debian-lts-announce/2021/07/msg00018.html | Mailing List |
|
https://pillow.readthedocs.io/en/stable/releasenotes/8.2.0.html#cve-2021-28677-fix-eps-dos-on-open | Third Party Advisory |
URL | Date | SRC |
---|
URL | Date | SRC |
---|---|---|
https://github.com/python-pillow/Pillow/pull/5377 | 2023-11-07 |
Affected Vendors, Products, and Versions
Vendor | Product | Version | Other | Status | ||||||
---|---|---|---|---|---|---|---|---|---|---|
Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
Python Search vendor "Python" | Pillow Search vendor "Python" for product "Pillow" | < 8.2.0 Search vendor "Python" for product "Pillow" and version " < 8.2.0" | - |
Affected
| ||||||
Fedoraproject Search vendor "Fedoraproject" | Fedora Search vendor "Fedoraproject" for product "Fedora" | 33 Search vendor "Fedoraproject" for product "Fedora" and version "33" | - |
Affected
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