PT-2019-5546 · Debian+1 · Vixie Cron+1

Florian Weimer · Published 2019-03-11 · Updated 2022-05-06 · CVE-2019-9706

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Vixie Cron versions prior to 3.0pl1-133

Description The issue is related to a use-after-free error in the force rescan user function of the Cron daemon, which can cause a denial of service and daemon crash. This can be exploited by local users to disrupt service.

Recommendations For versions prior to 3.0pl1-133, update to the 3.0pl1-133 Debian package or later to resolve the issue. As a temporary workaround, consider restricting access to the Cron daemon to minimize the risk of exploitation.

Exploit

Fix

DoS

Use After Free

Weakness Enumeration

CWE-416

Related Identifiers

BDU:2020-04096

CVE-2019-9706

DLA-1723-1

DLA-2801-1

USN-5259-1

USN-5259-2

Affected Products

Ubuntu

Vixie Cron

References · 26

• 🔥 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=809167 · Exploit
• https://osv.dev/vulnerability/DLA-2801-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2019-9706 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2019-9706 · Security Note
• https://salsa.debian.org/debian/cron/commit/40791b93 · Patch
• https://osv.dev/vulnerability/DLA-1723-1 · Vendor Advisory
• https://wiki.astralinux.ru/astra-linux-se16-bulletin-20220829SE16 · Vendor Advisory
• https://wiki.astralinux.ru/astra-linux-se15-bulletin-20201201SE15 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-5259-2 · Vendor Advisory
• https://osv.dev/vulnerability/USN-5259-2 · Vendor Advisory
• https://wiki.astralinux.ru/astra-linux-se81-bulletin-20200429SE81 · Vendor Advisory
• https://osv.dev/vulnerability/USN-5259-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2017-9525 · Vendor Advisory
• https://ubuntu.com/security/CVE-2019-9705 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2019-9706 · Vendor Advisory