An issue was discovered in Pillow before 8.2.0. PSDImagePlugin.PsdImageFile lacked a sanity check on the number of input layers relative to the size of the data block. This could lead to a DoS on Image.open prior to Image.load.
Weakness
The product does not check the return value from a method or function, which can prevent it from detecting unexpected states and conditions.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Pillow | Python | * | 8.2.0 (excluding) |
| Red Hat Enterprise Linux 8 | RedHat | python-pillow-0:5.1.1-16.el8 | * |
| Pillow | Ubuntu | bionic | * |
| Pillow | Ubuntu | devel | * |
| Pillow | Ubuntu | esm-infra/bionic | * |
| Pillow | Ubuntu | esm-infra/focal | * |
| Pillow | Ubuntu | focal | * |
| Pillow | Ubuntu | groovy | * |
| Pillow | Ubuntu | hirsute | * |
| Pillow | Ubuntu | impish | * |
| Pillow | Ubuntu | jammy | * |
| Pillow | Ubuntu | kinetic | * |
| Pillow | Ubuntu | lunar | * |
| Pillow | Ubuntu | mantic | * |
| Pillow | Ubuntu | noble | * |
| Pillow | Ubuntu | oracular | * |
| Pillow | Ubuntu | plucky | * |
| Pillow | Ubuntu | questing | * |
| Pillow | Ubuntu | trusty | * |
| Pillow | Ubuntu | trusty/esm | * |
| Pillow | Ubuntu | upstream | * |
| Pillow | Ubuntu | xenial | * |
| Pillow-python2 | Ubuntu | focal | * |
| Pillow-python2 | Ubuntu | groovy | * |
| Python-imaging | Ubuntu | precise/esm | * |
Potential Mitigations
References
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MQHA5HAIBOYI3R6HDWCLAGFTIQP767FL/
- https://pillow.readthedocs.io/en/stable/releasenotes/8.2.0.html#cve-2021-28675-fix-dos-in-psdimageplugin
- https://security.gentoo.org/glsa/202107-33
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MQHA5HAIBOYI3R6HDWCLAGFTIQP767FL/
- https://pillow.readthedocs.io/en/stable/releasenotes/8.2.0.html#cve-2021-28675-fix-dos-in-psdimageplugin
- https://security.gentoo.org/glsa/202107-33