Vulnerability Name:

CVE-2021-32633 (CCN-202241)

Assigned:2021-05-21
Published:2021-05-21
Updated:2022-04-06
Summary:Zope is an open-source web application server. In Zope versions prior to 4.6 and 5.2, users can access untrusted modules indirectly through Python modules that are available for direct use. By default, only users with the Manager role can add or edit Zope Page Templates through the web, but sites that allow untrusted users to add/edit Zope Page Templates through the web are at risk from this vulnerability. The problem has been fixed in Zope 5.2 and 4.6. As a workaround, a site administrator can restrict adding/editing Zope Page Templates through the web using the standard Zope user/role permission mechanisms. Untrusted users should not be assigned the Zope Manager role and adding/editing Zope Page Templates through the web should be restricted to trusted users only.
CVSS v3 Severity:8.8 High (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)
7.7 High (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/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): Network
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
6.8 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N)
5.9 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
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): None
CVSS v2 Severity:6.5 Medium (CVSS v2 Vector: AV:N/AC:L/Au:S/C:P/I:P/A:P)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Authentication (Au): Single_Instance
Impact Metrics:Confidentiality (C): Partial
Integrity (I): Partial
Availibility (A): Partial
6.6 Medium (CCN CVSS v2 Vector: AV:N/AC:H/Au:S/C:C/I:C/A:N)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): High
Athentication (Au): Single_Instance
Impact Metrics:Confidentiality (C): Complete
Integrity (I): Complete
Availibility (A): None
Vulnerability Type:CWE-22
Vulnerability Consequences:Gain Access
References:Source: MITRE
Type: CNA
CVE-2021-32633

Source: MLIST
Type: Mailing List, Third Party Advisory
[oss-security] 20210521 Plone security hotfix 20210518

Source: MLIST
Type: Mailing List, Third Party Advisory
[oss-security] 20210522 Re: Plone security hotfix 20210518

Source: MISC
Type: Exploit, Third Party Advisory
https://cyllective.com/blog/post/plone-authenticated-rce-cve-2021-32633/

Source: XF
Type: UNKNOWN
zope-cve202132633-dir-traversal(202241)

Source: MISC
Type: Patch, Third Party Advisory
https://github.com/zopefoundation/Zope/commit/1f8456bf1f908ea46012537d52bd7e752a532c91

Source: CCN
Type: Zope GIT Repository
Remote Code Execution via traversal in TAL expressions

Source: CONFIRM
Type: Third Party Advisory
https://github.com/zopefoundation/Zope/security/advisories/GHSA-5pr9-v234-jw36

Vulnerable Configuration:Configuration 1:
  • cpe:/a:plone:plone:*:*:*:*:*:*:*:* (Version <= 4.3.20)
  • OR cpe:/a:plone:plone:*:*:*:*:*:*:*:* (Version >= 5.0 and <= 5.2.4)
  • OR cpe:/a:zope:zope:*:*:*:*:*:*:*:* (Version < 4.6)
  • OR cpe:/a:zope:zope:*:*:*:*:*:*:*:* (Version >= 5.0 and < 5.2)

    • Configuration CCN 1:
  • cpe:/a:zope:zope:4.5.5:*:*:*:*:*:*:*
  • OR cpe:/a:zope:zope:5.1.2:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    BACK
    plone plone *
    plone plone *
    zope zope *
    zope zope *
    zope zope 4.5.5
    zope zope 5.1.2