PT-2021-15510 · Bikeshed · Bikeshed

Apple502J · Published 2021-08-16 · Updated 2021-08-30 · CVE-2021-23422

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions bikeshed versions prior to 3.0.0

Description The issue occurs when an untrusted source file containing Inline Tag Command metadata is processed, potentially leading to the execution of an arbitrary OS command. The command output would then be included in the HTML output.

Recommendations For versions prior to 3.0.0, update to version 3.0.0 or later to resolve the issue. As a temporary workaround, consider avoiding the processing of untrusted source files containing Inline Tag Command metadata until a patch is available. Restrict access to the bikeshed package to minimize the risk of exploitation.

Fix

OS Command Injection

Weakness Enumeration

CWE-78

Related Identifiers

CVE-2021-23422

GHSA-87CJ-PX37-RC3X

PYSEC-2021-116

SNYK-PYTHON-BIKESHED-1537646

Affected Products

Bikeshed

References · 13

• https://github.com/tabatkins/bikeshed/commit/b2f668fca204260b1cad28d5078e93471cb6b2dd · Patch
• https://osv.dev/vulnerability/CVE-2021-23422 · Vendor Advisory
• https://osv.dev/vulnerability/GHSA-87cj-px37-rc3x · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2021-23422 · Vendor Advisory
• https://osv.dev/vulnerability/PYSEC-2021-116 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-23422 · Security Note
• https://ubuntu.com/security/CVE-2021-23422 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2021-23422 · Security Note
• https://snyk.io/vuln/SNYK-PYTHON-BIKESHED-1537646 · Patch
• https://github.com/tabatkins/bikeshed · Note
• https://github.com/pypa/advisory-database/tree/main/vulns/bikeshed/PYSEC-2021-116.yaml · Note
• https://t.me/cvenotify/19925 · Telegram Post
• https://github.com/advisories/GHSA-87cj-px37-rc3x · Note