# CVE-2021-28677: python3-pil: An issue was discovered in Pillow before 8.2.0

CVE-2021-28677 is fixed in 12 products on 1 platform, first by python-pil 5.1.0-1ubuntu0.6, released May 9, 2021. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2021-28677
- Priority: High
- CVSS: 9.1 (Low)
- EPSS: 0.0247
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: May 9, 2021

## Description

An issue was discovered in Pillow before 8.2.0. For EPS data, the readlineimplementation used in EPSImageFile has to deal with any combination of \rand \n as line endings. It used an accidentally quadratic method ofaccumulating lines while looking for a line ending. A malicious EPS filecould use this to perform a DoS of Pillow in the open phase, before animage was accepted for opening.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | python-pil Ubuntu 18.04.6 LTS (bionic) | 5.1.0-1ubuntu0.6 | [python-pil 5.1.0-1ubuntu0.6](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-python-pil-5.1.0-1ubuntu0.6.md) | May 9, 2021 |
| Linux | python-pil.imagetk Ubuntu 18.04.6 LTS (bionic) | 5.1.0-1ubuntu0.6 | [python-pil.imagetk 5.1.0-1ubuntu0.6](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-python-pil.imagetk-5.1.0-1ubuntu0.6.md) | May 9, 2021 |
| Linux | python-pillow rocky 8 | 0:5.1.1-16.el8 | [RLSA-2021:4149](https://patchblox.com/security/data/fix/linux/rlsa-2021-4149.md) | Nov 9, 2021 |
| Linux | python-pillow-debuginfo amzn 2023 | 9.4.0-2.amzn2023.0.1 | [ALAS2023-2023-146](https://patchblox.com/security/data/fix/linux/alas2023-2023-146.md) | Mar 20, 2023 |
| Linux | python-pillow-debugsource amzn 2023 | 9.4.0-2.amzn2023.0.1 | [ALAS2023-2023-146](https://patchblox.com/security/data/fix/linux/alas2023-2023-146.md) | Mar 20, 2023 |
| Linux | python3-pil Ubuntu 18.04.6 LTS (bionic) | 5.1.0-1ubuntu0.6 | [python3-pil 5.1.0-1ubuntu0.6](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-python3-pil-5.1.0-1ubuntu0.6.md) | May 9, 2021 |
| Linux | python3-pil Ubuntu 20.04 LTS (focal) | 7.0.0-4ubuntu0.4 | [python3-pil 7.0.0-4ubuntu0.4](https://patchblox.com/security/data/fix/linux/ubuntu-focal-python3-pil-7.0.0-4ubuntu0.4.md) | May 9, 2021 |
| Linux | python3-pil Ubuntu 24.10 (oracular) | 8.1.2+dfsg-0.1ubuntu1 | [python3-pil 8.1.2+dfsg-0.1ubuntu1](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-python3-pil-8.1.2-dfsg-0.1ubuntu1.md) | Jan 16, 2026 |
| Linux | python3-pil Ubuntu 25.04 (plucky) | 8.1.2+dfsg-0.1ubuntu1 | [python3-pil 8.1.2+dfsg-0.1ubuntu1](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-python3-pil-8.1.2-dfsg-0.1ubuntu1.md) | Jan 16, 2026 |
| Linux | python3-pil.imagetk Ubuntu 18.04.6 LTS (bionic) | 5.1.0-1ubuntu0.6 | [python3-pil.imagetk 5.1.0-1ubuntu0.6](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-python3-pil.imagetk-5.1.0-1ubuntu0.6.md) | May 9, 2021 |
| Linux | python3-pil.imagetk Ubuntu 20.04 LTS (focal) | 7.0.0-4ubuntu0.4 | [python3-pil.imagetk 7.0.0-4ubuntu0.4](https://patchblox.com/security/data/fix/linux/ubuntu-focal-python3-pil.imagetk-7.0.0-4ubuntu0.4.md) | May 9, 2021 |
| Linux | python3-pil.imagetk Ubuntu 24.10 (oracular) | 8.1.2+dfsg-0.1ubuntu1 | [python3-pil.imagetk 8.1.2+dfsg-0.1ubuntu1](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-python3-pil.imagetk-8.1.2-dfsg-0.1ubuntu1.md) | Jan 16, 2026 |
| Linux | python3-pil.imagetk Ubuntu 25.04 (plucky) | 8.1.2+dfsg-0.1ubuntu1 | [python3-pil.imagetk 8.1.2+dfsg-0.1ubuntu1](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-python3-pil.imagetk-8.1.2-dfsg-0.1ubuntu1.md) | Jan 16, 2026 |
| Linux | python3-pillow RHEL 8 | 0:5.1.1-16.el8 | [RHSA-2021:4149](https://patchblox.com/security/data/fix/linux/rhsa-2021-4149.md) | Nov 9, 2021 |
| Linux | python3-pillow almalinux 8 | 5.1.1-16.el8 | [ALSA-2021:4149](https://patchblox.com/security/data/fix/linux/alsa-2021-4149.md) | Nov 9, 2021 |
| Linux | python3-pillow amzn 2023 | 9.4.0-2.amzn2023.0.1 | [ALAS2023-2023-146](https://patchblox.com/security/data/fix/linux/alas2023-2023-146.md) | Mar 20, 2023 |
| Linux | python3-pillow-debuginfo amzn 2023 | 9.4.0-2.amzn2023.0.1 | [ALAS2023-2023-146](https://patchblox.com/security/data/fix/linux/alas2023-2023-146.md) | Mar 20, 2023 |
| Linux | python3-pillow-devel amzn 2023 | 9.4.0-2.amzn2023.0.1 | [ALAS2023-2023-146](https://patchblox.com/security/data/fix/linux/alas2023-2023-146.md) | Mar 20, 2023 |
| Linux | python3-pillow-tk amzn 2023 | 9.4.0-2.amzn2023.0.1 | [ALAS2023-2023-146](https://patchblox.com/security/data/fix/linux/alas2023-2023-146.md) | Mar 20, 2023 |
| Linux | python3-pillow-tk-debuginfo amzn 2023 | 9.4.0-2.amzn2023.0.1 | [ALAS2023-2023-146](https://patchblox.com/security/data/fix/linux/alas2023-2023-146.md) | Mar 20, 2023 |

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