Buffer overflow in Python Pillow
CVE-2021-25289
An issue was discovered in Pillow before 8.1.1. TiffDecode has a heap-based buffer overflow when decoding crafted YCbCr files because of certain interpretation conflicts with LibTIFF in RGBA mode. NOTE: this issue exists because of an incomplete fix for CVE-2020-35654.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.023 (83.0th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 83rd percentile — 83.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.023 · newest: 0.023 · change: +0.001
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- pillow.readthedocs.io/en/stable/releasenotes/8.1.1.html (Release Notes, Vendor Advisory)
- security.gentoo.org/glsa/202107-33 (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-25289?
- CVE-2021-25289 is a critical-severity vulnerability in Python Pillow, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2021-03-19.
- How severe is CVE-2021-25289?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2021-25289 known to be exploited?
- 4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.