4.6 Medium
CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:L/AC:L/Au:N/C:P/I:P/A:P
7.8 High
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
8.2 High
AI Score
Confidence
High
0.002 Low
EPSS
Percentile
55.8%
Issue Overview:
In Sudo before 1.8.26, if pwfeedback is enabled in /etc/sudoers, users can trigger a stack-based buffer overflow in the privileged sudo process. (pwfeedback is a default setting in Linux Mint and elementary OS; however, it is NOT the default for upstream and many other packages, and would exist only if enabled by an administrator.) The attacker needs to deliver a long string to the stdin of getln() in tgetpass.c.(CVE-2019-18634)
Affected Packages:
sudo
Note:
This advisory is applicable to Amazon Linux 2 (AL2) Core repository. Visit this FAQ section for the difference between AL2 Core and AL2 Extras advisories.
Issue Correction:
Run yum update sudo to update your system.
New Packages:
aarch64:
sudo-1.8.23-4.amzn2.2.aarch64
sudo-devel-1.8.23-4.amzn2.2.aarch64
sudo-debuginfo-1.8.23-4.amzn2.2.aarch64
i686:
sudo-1.8.23-4.amzn2.2.i686
sudo-devel-1.8.23-4.amzn2.2.i686
sudo-debuginfo-1.8.23-4.amzn2.2.i686
src:
sudo-1.8.23-4.amzn2.2.src
x86_64:
sudo-1.8.23-4.amzn2.2.x86_64
sudo-devel-1.8.23-4.amzn2.2.x86_64
sudo-debuginfo-1.8.23-4.amzn2.2.x86_64
Red Hat: CVE-2019-18634
Mitre: CVE-2019-18634
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
Amazon Linux | 2 | aarch64 | sudo | < 1.8.23-4.amzn2.2 | sudo-1.8.23-4.amzn2.2.aarch64.rpm |
Amazon Linux | 2 | aarch64 | sudo-devel | < 1.8.23-4.amzn2.2 | sudo-devel-1.8.23-4.amzn2.2.aarch64.rpm |
Amazon Linux | 2 | aarch64 | sudo-debuginfo | < 1.8.23-4.amzn2.2 | sudo-debuginfo-1.8.23-4.amzn2.2.aarch64.rpm |
Amazon Linux | 2 | i686 | sudo | < 1.8.23-4.amzn2.2 | sudo-1.8.23-4.amzn2.2.i686.rpm |
Amazon Linux | 2 | i686 | sudo-devel | < 1.8.23-4.amzn2.2 | sudo-devel-1.8.23-4.amzn2.2.i686.rpm |
Amazon Linux | 2 | i686 | sudo-debuginfo | < 1.8.23-4.amzn2.2 | sudo-debuginfo-1.8.23-4.amzn2.2.i686.rpm |
Amazon Linux | 2 | x86_64 | sudo | < 1.8.23-4.amzn2.2 | sudo-1.8.23-4.amzn2.2.x86_64.rpm |
Amazon Linux | 2 | x86_64 | sudo-devel | < 1.8.23-4.amzn2.2 | sudo-devel-1.8.23-4.amzn2.2.x86_64.rpm |
Amazon Linux | 2 | x86_64 | sudo-debuginfo | < 1.8.23-4.amzn2.2 | sudo-debuginfo-1.8.23-4.amzn2.2.x86_64.rpm |
4.6 Medium
CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:L/AC:L/Au:N/C:P/I:P/A:P
7.8 High
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
8.2 High
AI Score
Confidence
High
0.002 Low
EPSS
Percentile
55.8%