Important: cyrus-imapd

2022-01-1820:13:00

alas.aws.amazon.com

7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

5 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:N/I:N/A:P

0.004 Low

EPSS

Percentile

74.8%

JSON

Issue Overview:

A flaw was found in cyrus-imapd. A bad string hashing algorithm used in internal hash tables allows user inputs to be stored in predictable buckets. A user may cause a CPU denial of service by maliciously directing many inputs to a single bucket. The highest threat from this vulnerability is to system availability. (CVE-2021-33582)

Affected Packages:

cyrus-imapd

Issue Correction:
Run yum update cyrus-imapd to update your system.

New Packages:

i686:  
    cyrus-imapd-2.4.22-1.10.amzn1.i686  
    cyrus-imapd-utils-2.4.22-1.10.amzn1.i686  
    cyrus-imapd-debuginfo-2.4.22-1.10.amzn1.i686  
    cyrus-imapd-devel-2.4.22-1.10.amzn1.i686  
  
src:  
    cyrus-imapd-2.4.22-1.10.amzn1.src  
  
x86_64:  
    cyrus-imapd-2.4.22-1.10.amzn1.x86_64  
    cyrus-imapd-debuginfo-2.4.22-1.10.amzn1.x86_64  
    cyrus-imapd-utils-2.4.22-1.10.amzn1.x86_64  
    cyrus-imapd-devel-2.4.22-1.10.amzn1.x86_64

Additional References

Red Hat: CVE-2021-33582

Mitre: CVE-2021-33582

OSVersionArchitecturePackageVersionFilename
Amazon Linux1i686cyrus-imapd< 2.4.22-1.10.amzn1cyrus-imapd-2.4.22-1.10.amzn1.i686.rpm
Amazon Linux1i686cyrus-imapd-utils< 2.4.22-1.10.amzn1cyrus-imapd-utils-2.4.22-1.10.amzn1.i686.rpm
Amazon Linux1i686cyrus-imapd-debuginfo< 2.4.22-1.10.amzn1cyrus-imapd-debuginfo-2.4.22-1.10.amzn1.i686.rpm
Amazon Linux1i686cyrus-imapd-devel< 2.4.22-1.10.amzn1cyrus-imapd-devel-2.4.22-1.10.amzn1.i686.rpm
Amazon Linux1x86_64cyrus-imapd< 2.4.22-1.10.amzn1cyrus-imapd-2.4.22-1.10.amzn1.x86_64.rpm
Amazon Linux1x86_64cyrus-imapd-debuginfo< 2.4.22-1.10.amzn1cyrus-imapd-debuginfo-2.4.22-1.10.amzn1.x86_64.rpm
Amazon Linux1x86_64cyrus-imapd-utils< 2.4.22-1.10.amzn1cyrus-imapd-utils-2.4.22-1.10.amzn1.x86_64.rpm
Amazon Linux1x86_64cyrus-imapd-devel< 2.4.22-1.10.amzn1cyrus-imapd-devel-2.4.22-1.10.amzn1.x86_64.rpm

OS	Version	Architecture	Package	Version	Filename
Amazon Linux	1	i686	cyrus-imapd	< 2.4.22-1.10.amzn1	cyrus-imapd-2.4.22-1.10.amzn1.i686.rpm
Amazon Linux	1	i686	cyrus-imapd-utils	< 2.4.22-1.10.amzn1	cyrus-imapd-utils-2.4.22-1.10.amzn1.i686.rpm
Amazon Linux	1	i686	cyrus-imapd-debuginfo	< 2.4.22-1.10.amzn1	cyrus-imapd-debuginfo-2.4.22-1.10.amzn1.i686.rpm
Amazon Linux	1	i686	cyrus-imapd-devel	< 2.4.22-1.10.amzn1	cyrus-imapd-devel-2.4.22-1.10.amzn1.i686.rpm
Amazon Linux	1	x86_64	cyrus-imapd	< 2.4.22-1.10.amzn1	cyrus-imapd-2.4.22-1.10.amzn1.x86_64.rpm
Amazon Linux	1	x86_64	cyrus-imapd-debuginfo	< 2.4.22-1.10.amzn1	cyrus-imapd-debuginfo-2.4.22-1.10.amzn1.x86_64.rpm
Amazon Linux	1	x86_64	cyrus-imapd-utils	< 2.4.22-1.10.amzn1	cyrus-imapd-utils-2.4.22-1.10.amzn1.x86_64.rpm
Amazon Linux	1	x86_64	cyrus-imapd-devel	< 2.4.22-1.10.amzn1	cyrus-imapd-devel-2.4.22-1.10.amzn1.x86_64.rpm