Vulnerability Name:

CVE-2022-29527 (CCN-224878)

Assigned:2022-04-20
Published:2022-04-20
Updated:2022-05-03
Summary:Amazon AWS amazon-ssm-agent before 3.1.1208.0 creates a world-writable sudoers file, which allows local attackers to inject Sudo rules and escalate privileges to root. This occurs in certain situations involving a race condition.
CVSS v3 Severity:7.0 High (CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H)
6.1 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Local
Attack Complexity (AC): High
Privileges Required (PR): Low
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): High
Integrity (I): High
Availibility (A): High
7.8 High (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)
6.8 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): High
Integrity (I): High
Availibility (A): High
CVSS v2 Severity:6.9 Medium (CVSS v2 Vector: AV:L/AC:M/Au:N/C:C/I:C/A:C)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Medium
Authentication (Au): None
Impact Metrics:Confidentiality (C): Complete
Integrity (I): Complete
Availibility (A): Complete
6.8 Medium (CCN CVSS v2 Vector: AV:L/AC:L/Au:S/C:C/I:C/A:C)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Athentication (Au): Single_Instance
Impact Metrics:Confidentiality (C): Complete
Integrity (I): Complete
Availibility (A): Complete
Vulnerability Type:CWE-noinfo
Vulnerability Consequences:Gain Privileges
References:Source: MITRE
Type: CNA
CVE-2022-29527

Source: CCN
Type: Bugzilla - Bug 1196556
(CVE-2022-29527) VUL-0: CVE-2022-29527: amazon-ssm-agent: creates world-writable sudoers file during runtime (race condition)

Source: MISC
Type: Exploit, Issue Tracking, Third Party Advisory
https://bugzilla.suse.com/show_bug.cgi?id=1196556

Source: XF
Type: UNKNOWN
aws-cve202229527-priv-esc(224878)

Source: CCN
Type: amazon-ssm-agent GIT Repository
Create ssm-agent-users sudoer file with constrained file permission

Source: MISC
Type: Patch, Third Party Advisory
https://github.com/aws/amazon-ssm-agent/commit/0fe8ae99b2ff25649c7b86d3bc05fc037400aca7

Source: MISC
Type: Patch, Release Notes, Third Party Advisory
https://github.com/aws/amazon-ssm-agent/releases/tag/3.1.1208.0

Vulnerable Configuration:Configuration 1:
  • cpe:/a:amazon:amazon_ssm_agent:*:*:*:*:*:*:*:* (Version < 3.1.1208.0)

    • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:org.opensuse.security:def:3449
    P
    		bzip2-1.0.6-30.8.1 on GA media (Moderate)
    2022-06-28
    oval:org.opensuse.security:def:95079
    P
    		amazon-ssm-agent-3.1.1260.0-150000.5.9.2 on GA media (Moderate)
    2022-06-22
    oval:org.opensuse.security:def:93449
    P
    		 (Important)
    2022-05-03
    oval:org.opensuse.security:def:118379
    P
    		Security update for amazon-ssm-agent (Important)
    2022-05-03
    oval:org.opensuse.security:def:1558
    P
    		Security update for amazon-ssm-agent (Important)
    2022-05-03
    oval:org.opensuse.security:def:93803
    P
    		 (Important)
    2022-05-03
    oval:org.opensuse.security:def:466
    P
    		Security update for amazon-ssm-agent (Important)
    2022-05-03
    oval:org.opensuse.security:def:94229
    P
    		 (Important)
    2022-05-03
    oval:org.opensuse.security:def:93131
    P
    		 (Important)
    2022-05-03
    oval:org.opensuse.security:def:102123
    P
    		Security update for amazon-ssm-agent (Important) (in QA)
    2022-04-26
    BACK
    amazon amazon ssm agent *