CVE-2019-9706
published 2019-03-12CVE-2019-9706: Vixie Cron before the 3.0pl1-133 Debian package allows local users to cause a denial of service (use-after-free and daemon crash) because of a…
PriorityP417medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
EPSS
0.46%
36.5th percentile
Vixie Cron before the 3.0pl1-133 Debian package allows local users to cause a denial of service (use-after-free and daemon crash) because of a force_rescan_user error.
Affected
12 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| cron_project | cron | >= 0 < 3.0pl1-133 | 3.0pl1-133 |
| cron_project | cron | >= 0 < 3.0pl1-133 | 3.0pl1-133 |
| cron_project | cron | >= 0 < 3.0pl1-133 | 3.0pl1-133 |
| cron_project | cron | >= 0 < 3.0pl1-133 | 3.0pl1-133 |
| cron_project | cron | >= 0 < 3.0pl1-128.1ubuntu1.2 | 3.0pl1-128.1ubuntu1.2 |
| cron_project | cron | >= 0 < 3.0pl1-128.1ubuntu1.1 | 3.0pl1-128.1ubuntu1.1 |
| cron_project | cron | >= 0 < 3.0pl1-128ubuntu2+esm2 | 3.0pl1-128ubuntu2+esm2 |
| cron_project | cron | >= 0 < 3.0pl1-128ubuntu2+esm1 | 3.0pl1-128ubuntu2+esm1 |
| debian | cron | < cron 3.0pl1-133 (bookworm) | cron 3.0pl1-133 (bookworm) |
| debian | cron | — | — |
| debian | debian_linux | — | — |
| debian | debian_linux | — | — |
CVSS provenance
nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
nvdv2.02.1LOWAV:L/AC:L/Au:N/C:N/I:N/A:P
osv6.7MEDIUM
vendor_ubuntu6.7MEDIUM
vendor_debian5.5MEDIUM
vendor_redhat5.5MEDIUM
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GHSA
GHSA-vvgw-8mjp-fp2r: Vixie Cron before the 3
ghsa_unreviewed·2022-05-13
CVE-2019-9706 [MEDIUM] CWE-416 GHSA-vvgw-8mjp-fp2r: Vixie Cron before the 3
Vixie Cron before the 3.0pl1-133 Debian package allows local users to cause a denial of service (use-after-free and daemon crash) because of a force_rescan_user error.
OSV
cron regression
osv·2022-05-11·CVSS 6.7
CVE-2017-9525 [MEDIUM] cron regression
cron regression
USN-5259-1 and USN-5259-2 fixed vulnerabilities in Cron. Unfortunately
that update was incomplete and could introduce a regression. This update
fixes the problem.
We apologize for the inconvenience.
Original advisory details:
It was discovered that the postinst maintainer script in Cron unsafely
handled file permissions during package install or update operations.
An attacker could possibly use this issue to perform a privilege
escalation attack. (CVE-2017-9525)
Florian Weimer discovered that Cron incorrectly handled certain memory
operations during crontab file creation. An attacker could possibly use
this issue to cause a denial of service. (CVE-2019-9704)
It was discovered that Cron incorrectly handled user input during crontab
file creation. An attacker could poss
OSV
cron vulnerabilities
osv·2022-05-06·CVSS 6.7
CVE-2017-9525 [MEDIUM] cron vulnerabilities
cron vulnerabilities
USN-5259-1 fixed several vulnerabilities in Cron. This update provides
the corresponding update for Ubuntu 18.04 LTS.
Original advisory details:
It was discovered that the postinst maintainer script in Cron unsafely
handled file permissions during package install or update operations.
An attacker could possibly use this issue to perform a privilege
escalation attack. (CVE-2017-9525)
Florian Weimer discovered that Cron incorrectly handled certain memory
operations during crontab file creation. An attacker could possibly use
this issue to cause a denial of service. (CVE-2019-9704)
It was discovered that Cron incorrectly handled user input during crontab
file creation. An attacker could possibly use this issue to cause a denial
of service. (CVE-2019-9705)
It was dis
OSV
cron vulnerabilities
osv·2022-02-01·CVSS 6.7
CVE-2017-9525 [MEDIUM] cron vulnerabilities
cron vulnerabilities
It was discovered that the postinst maintainer script in Cron unsafely
handled file permissions during package install or update operations.
An attacker could possibly use this issue to perform a privilege
escalation attack. (CVE-2017-9525)
Florian Weimer discovered that Cron incorrectly handled certain memory
operations during crontab file creation. An attacker could possibly use
this issue to cause a denial of service. (CVE-2019-9704)
It was discovered that Cron incorrectly handled user input during crontab
file creation. An attacker could possibly use this issue to cause a denial
of service. (CVE-2019-9705)
It was discovered that Cron contained a use-after-free vulnerability in
its force_rescan_user function. An attacker could possibly use this issue
to cause a
OSV
CVE-2019-9706: Vixie Cron before the 3
osv·2019-03-12·CVSS 5.5
CVE-2019-9706 [MEDIUM] CVE-2019-9706: Vixie Cron before the 3
Vixie Cron before the 3.0pl1-133 Debian package allows local users to cause a denial of service (use-after-free and daemon crash) because of a force_rescan_user error.
Ubuntu
Cron regression
vendor_ubuntu·2022-05-11·CVSS 6.7
CVE-2017-9525 [MEDIUM] Cron regression
Title: Cron regression
Summary: USN-5259-1 and USN-5259-2 introduced a regression in Cron.
USN-5259-1 and USN-5259-2 fixed vulnerabilities in Cron. Unfortunately
that update was incomplete and could introduce a regression. This update
fixes the problem.
We apologize for the inconvenience.
Original advisory details:
It was discovered that the postinst maintainer script in Cron unsafely
handled file permissions during package install or update operations.
An attacker could possibly use this issue to perform a privilege
escalation attack. (CVE-2017-9525)
Florian Weimer discovered that Cron incorrectly handled certain memory
operations during crontab file creation. An attacker could possibly use
this issue to cause a denial of service. (CVE-2019-9704)
It was discovered that Cron incorre
Ubuntu
Cron vulnerabilities
vendor_ubuntu·2022-05-06·CVSS 6.7
CVE-2019-9706 [MEDIUM] Cron vulnerabilities
Title: Cron vulnerabilities
Summary: Several security issues were fixed in Cron.
USN-5259-1 fixed several vulnerabilities in Cron. This update provides
the corresponding update for Ubuntu 18.04 LTS.
Original advisory details:
It was discovered that the postinst maintainer script in Cron unsafely
handled file permissions during package install or update operations.
An attacker could possibly use this issue to perform a privilege
escalation attack. (CVE-2017-9525)
Florian Weimer discovered that Cron incorrectly handled certain memory
operations during crontab file creation. An attacker could possibly use
this issue to cause a denial of service. (CVE-2019-9704)
It was discovered that Cron incorrectly handled user input during crontab
file creation. An attacker could possibly use this is
Ubuntu
Cron vulnerabilities
vendor_ubuntu·2022-02-01·CVSS 6.7
CVE-2019-9704 [MEDIUM] Cron vulnerabilities
Title: Cron vulnerabilities
Summary: Several security issues were fixed in Cron.
It was discovered that the postinst maintainer script in Cron unsafely
handled file permissions during package install or update operations.
An attacker could possibly use this issue to perform a privilege
escalation attack. (CVE-2017-9525)
Florian Weimer discovered that Cron incorrectly handled certain memory
operations during crontab file creation. An attacker could possibly use
this issue to cause a denial of service. (CVE-2019-9704)
It was discovered that Cron incorrectly handled user input during crontab
file creation. An attacker could possibly use this issue to cause a denial
of service. (CVE-2019-9705)
It was discovered that Cron contained a use-after-free vulnerability in
its force_rescan_user fu
Red Hat
vixie-cron: use-after-free resulting in dos
vendor_redhat·2019-03-08·CVSS 5.5
CVE-2019-9706 [MEDIUM] CWE-416 vixie-cron: use-after-free resulting in dos
vixie-cron: use-after-free resulting in dos
Vixie Cron before the 3.0pl1-133 Debian package allows local users to cause a denial of service (use-after-free and daemon crash) because of a force_rescan_user error.
Statement: This issue did not affect the versions of vixie-cron as shipped with Red Hat Enterprise Linux 5 as they did not include the vulnerable code.
This issue did not affect the versions of cronie as shipped with Red Hat Enterprise Linux 6, 7, and 8 as they did not include the vulnerable code.
Package: vixie-cron (Red Hat Enterprise Linux 5) - Not affected
Package: cronie (Red Hat Enterprise Linux 6) - Not affected
Package: cronie (Red Hat Enterprise Linux 7) - Not affected
Package: cronie (Red Hat Enterprise Linux 8) - Not affected
Debian
CVE-2019-9706: cron - Vixie Cron before the 3.0pl1-133 Debian package allows local users to cause a de...
vendor_debian·2019·CVSS 5.5
CVE-2019-9706 [MEDIUM] CVE-2019-9706: cron - Vixie Cron before the 3.0pl1-133 Debian package allows local users to cause a de...
Vixie Cron before the 3.0pl1-133 Debian package allows local users to cause a denial of service (use-after-free and daemon crash) because of a force_rescan_user error.
Scope: local
bookworm: resolved (fixed in 3.0pl1-133)
bullseye: resolved (fixed in 3.0pl1-133)
forky: resolved (fixed in 3.0pl1-133)
sid: resolved (fixed in 3.0pl1-133)
trixie: resolved (fixed in 3.0pl1-133)
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2019-9706 cronie: vixie-cron: use-after-free resulting in dos [fedora-all]
bugzilla·2019-05-20·CVSS 5.5
CVE-2019-9706 [MEDIUM] CVE-2019-9706 cronie: vixie-cron: use-after-free resulting in dos [fedora-all]
CVE-2019-9706 cronie: vixie-cron: use-after-free resulting in dos [fedora-all]
This is an automatically created tracking bug! It was created to ensure
that one or more security vulnerabilities are fixed in affected versions
of fedora-all.
For comments that are specific to the vulnerability please use bugs filed
against the "Security Response" product referenced in the "Blocks" field.
For more information see:
http://fedoraproject.org/wiki/Security/TrackingBugs
When submitting as an update, use the fedpkg template provided in the next
comment(s). This will include the bug IDs of this tracking bug as well as
the relevant top-level CVE bugs.
Please also mention the CVE IDs being fixed in the RPM changelog and the
fedpkg commit message.
NOTE: this issue affects multiple supported version
Bugzilla
CVE-2019-9706 vixie-cron: use-after-free resulting in dos
bugzilla·2019-03-12·CVSS 5.5
CVE-2019-9706 [MEDIUM] CVE-2019-9706 vixie-cron: use-after-free resulting in dos
CVE-2019-9706 vixie-cron: use-after-free resulting in dos
Vixie Cron before the 3.0pl1-133 Debian package allows local users to cause a denial of service (use-after-free and daemon crash) because of a force_rescan_user error.
Reference:
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=809167
Upstream commit:
https://salsa.debian.org/debian/cron/commit/40791b93
Discussion:
I do not think there is such code in cronie or the vixie-cron shipped in RHEL or Fedora.
---
This seems to be caused by a downstream patch applied to Debian/Ubuntu and, as also said in comment 1, Fedora/RHEL are not affected by this flaw as they simply don't have the vulnerable code.
---
Created cronie tracking bugs for this issue:
Affects: fedora-all [bug 1711927]
---
Statement:
This issue did not affect th
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=809167https://lists.debian.org/debian-lts-announce/2019/03/msg00025.htmlhttps://lists.debian.org/debian-lts-announce/2021/10/msg00029.htmlhttps://packages.qa.debian.org/c/cron/news/20190311T170403Z.htmlhttps://salsa.debian.org/debian/cron/commit/40791b93https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=809167https://lists.debian.org/debian-lts-announce/2019/03/msg00025.htmlhttps://lists.debian.org/debian-lts-announce/2021/10/msg00029.htmlhttps://packages.qa.debian.org/c/cron/news/20190311T170403Z.htmlhttps://salsa.debian.org/debian/cron/commit/40791b93
2019-03-12
Published