Pillow is a Python imaging library. Prior to 12.3.0, PIL/PcfFontFile.py _load_bitmaps() read glyph dimensions from the PCF METRICS section and passed them directly to Image.frombytes() without calling Image._decompression_bomb_check(), allowing crafted PCF font data to cause excessive memory allocation. This issue is fixed in version 12.3.0.
Weakness
The product allocates memory based on an untrusted, large size value, but it does not ensure that the size is within expected limits, allowing arbitrary amounts of memory to be allocated.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Pillow | Python | * | 12.3.0 (excluding) |
| Red Hat Ansible Automation Platform 2.5 for RHEL 8 | RedHat | python3.12-pillow-0:12.3.0-1.el8ap | * |
| Red Hat Ansible Automation Platform 2.5 for RHEL 9 | RedHat | python3.12-pillow-0:12.3.0-1.el9ap | * |
| Red Hat Ansible Automation Platform 2.6 for RHEL 9 | RedHat | python3.12-pillow-0:12.3.0-1.el9ap | * |
| Red Hat Enterprise Linux 8 | RedHat | python-pillow-0:5.1.1-22.el8_10 | * |
| Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support | RedHat | python-pillow-0:5.1.1-15.el8_4.2 | * |
| Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On | RedHat | python-pillow-0:5.1.1-15.el8_4.2 | * |
| Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support | RedHat | python-pillow-0:5.1.1-20.el8_6 | * |
| Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On | RedHat | python-pillow-0:5.1.1-20.el8_6 | * |
| Red Hat Enterprise Linux 8.8 Telecommunications Update Service | RedHat | python-pillow-0:5.1.1-20.el8_8 | * |
| Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions | RedHat | python-pillow-0:5.1.1-20.el8_8 | * |
| Red Hat Satellite 6.16 for RHEL 8 | RedHat | python-pillow-0:12.3.0-1.el8pc | * |
| Red Hat Satellite 6.16 for RHEL 8 | RedHat | python-pillow-0:12.3.0-1.el8pc | * |
| Red Hat Satellite 6.16 for RHEL 9 | RedHat | python-pillow-0:12.3.0-1.el9pc | * |
| Red Hat Satellite 6.16 for RHEL 9 | RedHat | python-pillow-0:12.3.0-1.el9pc | * |
| Red Hat Satellite 6.17 for RHEL 9 | RedHat | python-pillow-0:12.3.0-1.el9pc | * |
| Red Hat Satellite 6.17 for RHEL 9 | RedHat | python-pillow-0:12.3.0-1.el9pc | * |
| Red Hat Satellite 6.18 for RHEL 9 | RedHat | python3.12-pillow-0:12.3.0-1.el9pc | * |
| Red Hat Satellite 6.18 for RHEL 9 | RedHat | python3.12-pillow-0:12.3.0-1.el9pc | * |
| Red Hat Satellite 6.19 for RHEL 9 | RedHat | python3.12-pillow-0:12.3.0-1.el9pc | * |
| Red Hat Satellite 6.19 for RHEL 9 | RedHat | python3.12-pillow-0:12.3.0-1.el9pc | * |
| Pillow | Ubuntu | questing | * |
Potential Mitigations
References
- https://github.com/python-pillow/Pillow/blob/main/docs/releasenotes/12.3.0.rst
- https://github.com/python-pillow/Pillow/commit/0a263e6264aa5399988d9acd3bbfbca2ca3ec77d
- https://github.com/python-pillow/Pillow/security/advisories/GHSA-8v84-f9pq-wr9x
- https://github.com/python-pillow/Pillow/security/advisories/GHSA-8v84-f9pq-wr9x