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amazonAmazonALAS2-2021-1715
HistoryOct 04, 2021 - 8:18 p.m.

Important: sssd

2021-10-0420:18:00
alas.aws.amazon.com
12

8.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

9 High

AI Score

Confidence

High

9.3 High

CVSS2

Access Vector

NETWORK

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:N/AC:M/Au:N/C:C/I:C/A:C

0.001 Low

EPSS

Percentile

48.8%

JSON

Issue Overview:

A flaw was found in SSSD, where the sssctl command was vulnerable to shell command injection via the logs-fetch and cache-expire subcommands. This flaw allows an attacker to trick the root user into running a specially crafted sssctl command, such as via sudo, to gain root access. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability. (CVE-2021-3621)

Affected Packages:

sssd

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 sssd to update your system.

New Packages:

aarch64:  
    sssd-1.16.5-10.amzn2.10.aarch64  
    sssd-common-1.16.5-10.amzn2.10.aarch64  
    sssd-client-1.16.5-10.amzn2.10.aarch64  
    libsss_sudo-1.16.5-10.amzn2.10.aarch64  
    libsss_autofs-1.16.5-10.amzn2.10.aarch64  
    sssd-tools-1.16.5-10.amzn2.10.aarch64  
    python-sss-1.16.5-10.amzn2.10.aarch64  
    python-sss-murmur-1.16.5-10.amzn2.10.aarch64  
    sssd-ldap-1.16.5-10.amzn2.10.aarch64  
    sssd-krb5-common-1.16.5-10.amzn2.10.aarch64  
    sssd-krb5-1.16.5-10.amzn2.10.aarch64  
    sssd-common-pac-1.16.5-10.amzn2.10.aarch64  
    sssd-ipa-1.16.5-10.amzn2.10.aarch64  
    sssd-ad-1.16.5-10.amzn2.10.aarch64  
    sssd-proxy-1.16.5-10.amzn2.10.aarch64  
    libsss_idmap-1.16.5-10.amzn2.10.aarch64  
    libsss_idmap-devel-1.16.5-10.amzn2.10.aarch64  
    libipa_hbac-1.16.5-10.amzn2.10.aarch64  
    libipa_hbac-devel-1.16.5-10.amzn2.10.aarch64  
    python-libipa_hbac-1.16.5-10.amzn2.10.aarch64  
    libsss_nss_idmap-1.16.5-10.amzn2.10.aarch64  
    libsss_nss_idmap-devel-1.16.5-10.amzn2.10.aarch64  
    python-libsss_nss_idmap-1.16.5-10.amzn2.10.aarch64  
    sssd-dbus-1.16.5-10.amzn2.10.aarch64  
    sssd-polkit-rules-1.16.5-10.amzn2.10.aarch64  
    libsss_simpleifp-1.16.5-10.amzn2.10.aarch64  
    libsss_simpleifp-devel-1.16.5-10.amzn2.10.aarch64  
    sssd-libwbclient-1.16.5-10.amzn2.10.aarch64  
    sssd-libwbclient-devel-1.16.5-10.amzn2.10.aarch64  
    sssd-winbind-idmap-1.16.5-10.amzn2.10.aarch64  
    libsss_certmap-1.16.5-10.amzn2.10.aarch64  
    libsss_certmap-devel-1.16.5-10.amzn2.10.aarch64  
    sssd-kcm-1.16.5-10.amzn2.10.aarch64  
    sssd-debuginfo-1.16.5-10.amzn2.10.aarch64  
  
i686:  
    sssd-1.16.5-10.amzn2.10.i686  
    sssd-common-1.16.5-10.amzn2.10.i686  
    sssd-client-1.16.5-10.amzn2.10.i686  
    libsss_sudo-1.16.5-10.amzn2.10.i686  
    libsss_autofs-1.16.5-10.amzn2.10.i686  
    sssd-tools-1.16.5-10.amzn2.10.i686  
    python-sss-1.16.5-10.amzn2.10.i686  
    python-sss-murmur-1.16.5-10.amzn2.10.i686  
    sssd-ldap-1.16.5-10.amzn2.10.i686  
    sssd-krb5-common-1.16.5-10.amzn2.10.i686  
    sssd-krb5-1.16.5-10.amzn2.10.i686  
    sssd-common-pac-1.16.5-10.amzn2.10.i686  
    sssd-ipa-1.16.5-10.amzn2.10.i686  
    sssd-ad-1.16.5-10.amzn2.10.i686  
    sssd-proxy-1.16.5-10.amzn2.10.i686  
    libsss_idmap-1.16.5-10.amzn2.10.i686  
    libsss_idmap-devel-1.16.5-10.amzn2.10.i686  
    libipa_hbac-1.16.5-10.amzn2.10.i686  
    libipa_hbac-devel-1.16.5-10.amzn2.10.i686  
    python-libipa_hbac-1.16.5-10.amzn2.10.i686  
    libsss_nss_idmap-1.16.5-10.amzn2.10.i686  
    libsss_nss_idmap-devel-1.16.5-10.amzn2.10.i686  
    python-libsss_nss_idmap-1.16.5-10.amzn2.10.i686  
    sssd-dbus-1.16.5-10.amzn2.10.i686  
    sssd-polkit-rules-1.16.5-10.amzn2.10.i686  
    libsss_simpleifp-1.16.5-10.amzn2.10.i686  
    libsss_simpleifp-devel-1.16.5-10.amzn2.10.i686  
    sssd-libwbclient-1.16.5-10.amzn2.10.i686  
    sssd-libwbclient-devel-1.16.5-10.amzn2.10.i686  
    sssd-winbind-idmap-1.16.5-10.amzn2.10.i686  
    libsss_certmap-1.16.5-10.amzn2.10.i686  
    libsss_certmap-devel-1.16.5-10.amzn2.10.i686  
    sssd-kcm-1.16.5-10.amzn2.10.i686  
    sssd-debuginfo-1.16.5-10.amzn2.10.i686  
  
noarch:  
    python-sssdconfig-1.16.5-10.amzn2.10.noarch  
  
src:  
    sssd-1.16.5-10.amzn2.10.src  
  
x86_64:  
    sssd-1.16.5-10.amzn2.10.x86_64  
    sssd-common-1.16.5-10.amzn2.10.x86_64  
    sssd-client-1.16.5-10.amzn2.10.x86_64  
    libsss_sudo-1.16.5-10.amzn2.10.x86_64  
    libsss_autofs-1.16.5-10.amzn2.10.x86_64  
    sssd-tools-1.16.5-10.amzn2.10.x86_64  
    python-sss-1.16.5-10.amzn2.10.x86_64  
    python-sss-murmur-1.16.5-10.amzn2.10.x86_64  
    sssd-ldap-1.16.5-10.amzn2.10.x86_64  
    sssd-krb5-common-1.16.5-10.amzn2.10.x86_64  
    sssd-krb5-1.16.5-10.amzn2.10.x86_64  
    sssd-common-pac-1.16.5-10.amzn2.10.x86_64  
    sssd-ipa-1.16.5-10.amzn2.10.x86_64  
    sssd-ad-1.16.5-10.amzn2.10.x86_64  
    sssd-proxy-1.16.5-10.amzn2.10.x86_64  
    libsss_idmap-1.16.5-10.amzn2.10.x86_64  
    libsss_idmap-devel-1.16.5-10.amzn2.10.x86_64  
    libipa_hbac-1.16.5-10.amzn2.10.x86_64  
    libipa_hbac-devel-1.16.5-10.amzn2.10.x86_64  
    python-libipa_hbac-1.16.5-10.amzn2.10.x86_64  
    libsss_nss_idmap-1.16.5-10.amzn2.10.x86_64  
    libsss_nss_idmap-devel-1.16.5-10.amzn2.10.x86_64  
    python-libsss_nss_idmap-1.16.5-10.amzn2.10.x86_64  
    sssd-dbus-1.16.5-10.amzn2.10.x86_64  
    sssd-polkit-rules-1.16.5-10.amzn2.10.x86_64  
    libsss_simpleifp-1.16.5-10.amzn2.10.x86_64  
    libsss_simpleifp-devel-1.16.5-10.amzn2.10.x86_64  
    sssd-libwbclient-1.16.5-10.amzn2.10.x86_64  
    sssd-libwbclient-devel-1.16.5-10.amzn2.10.x86_64  
    sssd-winbind-idmap-1.16.5-10.amzn2.10.x86_64  
    libsss_certmap-1.16.5-10.amzn2.10.x86_64  
    libsss_certmap-devel-1.16.5-10.amzn2.10.x86_64  
    sssd-kcm-1.16.5-10.amzn2.10.x86_64  
    sssd-debuginfo-1.16.5-10.amzn2.10.x86_64

Additional References

Red Hat: CVE-2021-3621

Mitre: CVE-2021-3621

OSVersionArchitecturePackageVersionFilename
Amazon Linux2aarch64sssd< 1.16.5-10.amzn2.10sssd-1.16.5-10.amzn2.10.aarch64.rpm
Amazon Linux2aarch64sssd-common< 1.16.5-10.amzn2.10sssd-common-1.16.5-10.amzn2.10.aarch64.rpm
Amazon Linux2aarch64sssd-client< 1.16.5-10.amzn2.10sssd-client-1.16.5-10.amzn2.10.aarch64.rpm
Amazon Linux2aarch64libsss_sudo< 1.16.5-10.amzn2.10libsss_sudo-1.16.5-10.amzn2.10.aarch64.rpm
Amazon Linux2aarch64libsss_autofs< 1.16.5-10.amzn2.10libsss_autofs-1.16.5-10.amzn2.10.aarch64.rpm
Amazon Linux2aarch64sssd-tools< 1.16.5-10.amzn2.10sssd-tools-1.16.5-10.amzn2.10.aarch64.rpm
Amazon Linux2aarch64python-sss< 1.16.5-10.amzn2.10python-sss-1.16.5-10.amzn2.10.aarch64.rpm
Amazon Linux2aarch64python-sss-murmur< 1.16.5-10.amzn2.10python-sss-murmur-1.16.5-10.amzn2.10.aarch64.rpm
Amazon Linux2aarch64sssd-ldap< 1.16.5-10.amzn2.10sssd-ldap-1.16.5-10.amzn2.10.aarch64.rpm
Amazon Linux2aarch64sssd-krb5-common< 1.16.5-10.amzn2.10sssd-krb5-common-1.16.5-10.amzn2.10.aarch64.rpm
Rows per page:
1-10 of 1031

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8.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

9 High

AI Score

Confidence

High

9.3 High

CVSS2

Access Vector

NETWORK

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:N/AC:M/Au:N/C:C/I:C/A:C

0.001 Low

EPSS

Percentile

48.8%

JSON
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