Vulnerability Description
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 \n 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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Python | Pillow | < 8.2.0 |
| Fedoraproject | Fedora | 33 |
References
- https://github.com/python-pillow/Pillow/pull/5377PatchThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2021/07/msg00018.htmlThird Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://pillow.readthedocs.io/en/stable/releasenotes/8.2.0.html#cve-2021-28677-fThird Party Advisory
- https://security.gentoo.org/glsa/202107-33Third Party Advisory
- https://github.com/python-pillow/Pillow/pull/5377PatchThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2021/07/msg00018.htmlThird Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://pillow.readthedocs.io/en/stable/releasenotes/8.2.0.html#cve-2021-28677-fThird Party Advisory
- https://security.gentoo.org/glsa/202107-33Third Party Advisory
FAQ
What is CVE-2021-28677?
CVE-2021-28677 is a vulnerability with a CVSS score of 7.5 (HIGH). 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 \n as line endings. It used an accidentally qu...
How severe is CVE-2021-28677?
CVE-2021-28677 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-28677?
Check the references section above for vendor advisories and patch information. Affected products include: Python Pillow, Fedoraproject Fedora.