Date: Sat, 22 May 2021 13:34:10 +0200 From: Maurits van Rees <maurits@...rees.org> To: oss-security@...ts.openwall.com Subject: Re: Plone security hotfix 20210518 CVE numbers inline below. Thanks. On 21/05/2021 16:07, Maurits van Rees wrote: > A Plone security hotfix was released on Tuesday, May 18 2021. > For details, see https://plone.org/security/hotfix/20210518 > Most CVE numbers are not yet issued. I will request them from Mitre > shortly. > > BTW, I am following the instructions at > https://oss-security.openwall.org/wiki/mailing-lists/oss-security#cve-requests > to first post to this list, then request CVEs at Mitre, then reply to > my own post. > I don't see many other people doing it in this order. Is that page > still accurate? > > Versions Affected: All supported Plone versions (4.3.20 and any > earlier 4.3.x version, 5.2.4 and any earlier 5.x version). > > Versions Not Affected: None. Earlier versions may be affected, but the > hotfix has not been tested on them. > > The patch addresses several security issues: > > - Remote Code Execution via traversal in expressions. Reported by > David Miller. CVE-2021-32633. > - Writing arbitrary files via docutils and Python Script. Reported by > Calum Hutton. CVE-2021-33509 > - Various information disclosures: mostly installation logs. Reported > by Calum Hutton. CVE-2021-21360 and CVE-2021-21336. > - Stored XSS from file upload (svg, html). Reported separately by Emir > Cüneyt Akkutlu and Tino Kautschke. CVE-2021-33512 > - Reflected XSS in various spots. Reported by Calum Hutton. CVE-2021-33507 > - XSS vulnerability in CMFDiffTool. Reported by Igor Margitich. CVE-2021-33513 > - Stored XSS from user fullname. Reported by Tino Kautschke. CVE-2021-33508 issued, but I forgot that the original reporter already reserved CVE-2021-3313 which is public now with his report. My bad. > - Blind SSRF via feedparser accessing an internal URL. Reported by > Subodh Kumar Shree. The reporter prefered to request the CVE for this one, so waiting to hear back. > - Server Side Request Forgery via event ical URL. Reported by > MisakiKata and David Miller. CVE-2021-33510 > - Server Side Request Forgery via lxml parser. Reported by MisakiKata > and David Miller. CVE-2021-33511 > > A hotfix package has been created at > https://pypi.org/project/Products.PloneHotfix20210518/ > The fixes will be incorporated in future release Plone 5.2.5. > -- Maurits van Rees https://maurits.vanrees.org/
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