CVSS2
Attack Vector
LOCAL
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:M/Au:N/C:C/I:C/A:C
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
26.7%
Package : cron
Version : 3.0pl1-127+deb8u2
CVE ID : CVE-2017-9525 CVE-2019-9704 CVE-2019-9705 CVE-2019-9706
Debian Bug : 809167
Various security problems have been discovered in Debian's CRON scheduler.
CVE-2017-9525
Fix group crontab to root escalation via the Debian package's
postinst script as described by Alexander Peslyak (Solar Designer) in
http://www.openwall.com/lists/oss-security/2017/06/08/3
CVE-2019-9704
DoS: Fix unchecked return of calloc(). Florian Weimer discovered that
a missing check for the return value of calloc() could crash the
daemon, which could be triggered by a very large crontab created by a
user.
CVE-2019-9705
Enforce maximum crontab line count of 1000 to prevent a malicious
user from creating an excessivly large crontab. The daemon will log a
warning for existing files, and crontab(1) will refuse to create new
ones.
CVE-2019-9706
A user reported a use-after-free condition in the cron daemon,
leading to a possible Denial-of-Service scenario by crashing the
daemon.
For Debian 8 "Jessie", these problems have been fixed in version
3.0pl1-127+deb8u2.
We recommend that you upgrade your cron packages.
Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS
–
mike gabriel aka sunweaver (Debian Developer)
fon: +49 (1520) 1976 148
GnuPG Fingerprint: 9BFB AEE8 6C0A A5FF BF22 0782 9AF4 6B30 2577 1B31
mail: [email protected], http://sunweavers.net
Attachment:
signature.asc
Description: PGP signature
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
Debian | 9 | arm64 | cron | < 3.0pl1-128+deb9u2 | cron_3.0pl1-128+deb9u2_arm64.deb |
Debian | 9 | armel | cron | < 3.0pl1-128+deb9u2 | cron_3.0pl1-128+deb9u2_armel.deb |
Debian | 8 | i386 | cron | < 3.0pl1-127+deb8u2 | cron_3.0pl1-127+deb8u2_i386.deb |
Debian | 8 | amd64 | cron | < 3.0pl1-127+deb8u2 | cron_3.0pl1-127+deb8u2_amd64.deb |
Debian | 9 | i386 | cron | < 3.0pl1-128+deb9u2 | cron_3.0pl1-128+deb9u2_i386.deb |
Debian | 8 | armhf | cron | < 3.0pl1-127+deb8u2 | cron_3.0pl1-127+deb8u2_armhf.deb |
Debian | 8 | all | cron | < 3.0pl1-127+deb8u2 | cron_3.0pl1-127+deb8u2_all.deb |
Debian | 9 | all | cron | < 3.0pl1-128+deb9u2 | cron_3.0pl1-128+deb9u2_all.deb |
Debian | 9 | amd64 | cron | < 3.0pl1-128+deb9u2 | cron_3.0pl1-128+deb9u2_amd64.deb |
Debian | 8 | armel | cron | < 3.0pl1-127+deb8u2 | cron_3.0pl1-127+deb8u2_armel.deb |
CVSS2
Attack Vector
LOCAL
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:M/Au:N/C:C/I:C/A:C
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
26.7%