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Vulnerability · Published Jun 2, 2021 · Assigned by mitre

CVE-2021-28677

High 7.5

In plain English

A high-severity security flaw in the python3-pillow package (AlmaLinux). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 2.5% (higher than 85% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS NVD)7.5High
Exploit odds (30 days)2.5%top 15.4% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known

Official 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.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
AlmaLinux:8python3-pillow5.1.1-16.el8ALSA-2021:4149
Alpine:v3.20py3-pillow8.2.0-r0ALPINE-CVE-2021-28677
Alpine:v3.21py3-pillow8.2.0-r0ALPINE-CVE-2021-28677
Alpine:v3.22py3-pillow8.2.0-r0ALPINE-CVE-2021-28677
Alpine:v3.23py3-pillow8.2.0-r0ALPINE-CVE-2021-28677
Alpine:v3.24py3-pillow8.2.0-r0ALPINE-CVE-2021-28677
Debian:12pillow8.1.2+dfsg-0.2DEBIAN-CVE-2021-28677
Debian:13pillow8.1.2+dfsg-0.2DEBIAN-CVE-2021-28677
Debian:14pillow8.1.2+dfsg-0.2DEBIAN-CVE-2021-28677
PyPIpillow8.2.0GHSA-q5hq-fp76-qmrc
PyPIpillow8.2.0PYSEC-2021-93
Rocky Linux:8python-pillow0:5.1.1-16.el8RLSA-2021:4149

Affected products (as reported)

VendorProductVersions
n/a n/a n/a

References