PT-2021-23582 · Openrc · Openrc

Gary E. Miller · Published 2021-10-14 · Updated 2021-10-20 · CVE-2021-42341

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

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

Name of the Vulnerable Software and Affected Versions OpenRC versions prior to 0.44.7

Description The issue arises from the checkpath function in OpenRC, which uses the direct output of strlen() to allocate strings. This approach fails to account for the 0 byte at the end of the string, resulting in memory corruption.

Recommendations For OpenRC versions prior to 0.44.7, update to version 0.44.7 or later to resolve the issue. As a temporary workaround, consider restricting the use of the checkpath function until a patch is available.

Exploit

Fix

Related Identifiers

CVE-2021-42341

Affected Products

Openrc

References · 11

• 🔥 https://github.com/OpenRC/openrc/issues/459 · Exploit
• 🔥 https://github.com/OpenRC/openrc/issues/418 · Exploit
• 🔥 https://bugs.gentoo.org/816900 · Exploit
• https://github.com/OpenRC/openrc/commit/bb8334104baf4d5a4a442a8647fb9204738f2204 · Patch
• https://github.com/OpenRC/openrc/pull/462 · Patch
• https://github.com/OpenRC/openrc/commit/63db2d99e730547339d1bdd28e8437999c380cae · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2021-42341 · Security Note
• https://osv.dev/vulnerability/ALPINE-CVE-2021-42341 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-42341 · Vendor Advisory
• https://t.me/cibsecurity/30547 · Telegram Post
• https://security.alpinelinux.org/vuln/CVE-2021-42341 · Note