Out-of-bounds Read in Python Pillow
CVE-2021-25287
An issue was discovered in Pillow before 8.2.0. There is an out-of-bounds read in J2kDecode, in j2ku_graya_la.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H.
EPSS exploit prediction
EPSS: 0.029 (86.6th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 87th percentile — 86.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.029 · newest: 0.029 · change: 0.000
Affected products
- Python Pillow
- Fedoraproject Fedora — versions 33
Weakness classification (CWE)
Public proof-of-concept exploits
References
- pillow.readthedocs.io/en/stable/releasenotes/8.2.0.html (Vendor Advisory)
- github.com/python-pillow/Pillow/pull/5377 (Third Party Advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- security.gentoo.org/glsa/202107-33 (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-25287?
- CVE-2021-25287 is a critical-severity vulnerability in Python Pillow, classified under Out-of-bounds Read. CVSS score: 9.1/10. Published 2021-06-02.
- How severe is CVE-2021-25287?
- Critical severity. CVSS v3 base score is 9.1 out of 10.
- Is CVE-2021-25287 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.