Vulnerability Name:

CVE-2020-24330 (CCN-186762)

Assigned:2020-06-08
Published:2020-06-08
Updated:2022-04-28
Summary:An issue was discovered in TrouSerS through 0.3.14. If the tcsd daemon is started with root privileges instead of by the tss user, it fails to drop the root gid privilege when no longer needed.
CVSS v3 Severity:7.8 High (CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)
6.9 Medium (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:U/RC:R)
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
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)
6.9 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:U/RC:R)
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
7.8 High (REDHAT CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H)
6.9 Medium (REDHAT Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:U/RC:R)
Exploitability Metrics:Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): Required
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): High
Integrity (I): High
Availibility (A): High
CVSS v2 Severity:7.2 High (CVSS v2 Vector: AV:L/AC:L/Au:N/C:C/I:C/A:C)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
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-269
CWE-271
Vulnerability Consequences:Gain Privileges
References:Source: MITRE
Type: CNA
CVE-2020-24330

Source: MLIST
Type: Exploit, Mailing List, Third Party Advisory
[oss-security] 20200814 Re: [TrouSerS-tech] Multiple Security Issues in the TrouSerS tpm1.2 tscd Daemon

Source: CCN
Type: Bugzilla - Bug 1164472
VUL-0: trousers: TrouSerS tcsd privilege escalation tss to root user

Source: MISC
Type: Exploit, Issue Tracking, Third Party Advisory
https://bugzilla.suse.com/show_bug.cgi?id=1164472

Source: XF
Type: UNKNOWN
trousers-cve202024330-priv-esc(186762)

Source: FEDORA
Type: Mailing List, Third Party Advisory
FEDORA-2020-ab3dace708

Source: MISC
Type: Mailing List, Patch, Third Party Advisory
https://seclists.org/oss-sec/2020/q2/att-135/tcsd_fixes.patch

Source: MISC
Type: Exploit, Mailing List, Third Party Advisory
https://sourceforge.net/p/trousers/mailman/message/37015817/

Source: CCN
Type: SourceForge TrouSerS Project Web site
TrouSerS

Source: CCN
Type: IBM Security Bulletin 6493729 (Cloud Pak for Security)
Cloud Pak for Security is vulnerable to several CVEs

Vulnerable Configuration:Configuration 1:
  • cpe:/a:trousers_project:trousers:*:*:*:*:*:*:*:* (Version <= 0.3.14)

    • Configuration 2:
  • cpe:/o:fedoraproject:fedora:33:*:*:*:*:*:*:*

    • Configuration RedHat 1:
  • cpe:/a:redhat:enterprise_linux:8:*:*:*:*:*:*:*

    • Configuration RedHat 2:
  • cpe:/a:redhat:enterprise_linux:8::crb:*:*:*:*:*

    • Configuration RedHat 3:
  • cpe:/o:redhat:enterprise_linux:8:*:*:*:*:*:*:*

    • Configuration RedHat 4:
  • cpe:/o:redhat:enterprise_linux:8::baseos:*:*:*:*:*

    • Configuration CCN 1:
  • cpe:/a:ibm:cloud_pak_for_security:1.7.0.0:*:*:*:*:*:*:*
  • OR cpe:/a:ibm:cloud_pak_for_security:1.7.1.0:*:*:*:*:*:*:*
  • OR cpe:/a:ibm:cloud_pak_for_security:1.7.2.0:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:org.opensuse.security:def:7684
    P
    		libtspi1-0.3.15-150400.1.10 on GA media (Moderate)
    2023-06-12
    oval:org.opensuse.security:def:3092
    P
    		gstreamer-1.8.3-9.5 on GA media (Moderate)
    2022-06-28
    oval:org.opensuse.security:def:94722
    P
    		libtspi1-0.3.15-150400.1.10 on GA media (Moderate)
    2022-06-22
    oval:org.opensuse.security:def:373
    P
    		trousers-0.3.15-150400.1.10 on GA media (Moderate)
    2022-06-10
    oval:com.redhat.rhsa:def:20211627
    P
    		RHSA-2021:1627: trousers security, bug fix, and enhancement update (Moderate)
    2021-05-18
    BACK
    trousers_project trousers *
    fedoraproject fedora 33
    ibm cloud pak for security 1.7.0.0
    ibm cloud pak for security 1.7.1.0
    ibm cloud pak for security 1.7.2.0