Bug 829220 (CVE-2021-43820)

Summary:	net-misc/seafile: insufficient cached access token access control (CVE-2021-43820)
Product:	Gentoo Security	Reporter:	John Helmert III <ajak>
Component:	Vulnerabilities	Assignee:	Gentoo Security <security>
Status:	RESOLVED INVALID
Severity:	minor	CC:	gentoo, proxy-maint
Priority:	Normal
Version:	unspecified
Hardware:	All
OS:	Linux
URL:	https://github.com/haiwen/seafile-server/security/advisories/GHSA-m3wc-jv6r-hvv8
Whiteboard:	B4 [ebuild]
Package list:		Runtime testing required:	---

Description John Helmert III archtester

2021-12-15 00:40:17 UTC

CVE-2021-43820:

Seafile is an open source cloud storage system. A sync token is used in Seafile file syncing protocol to authorize access to library data. To improve performance, the token is cached in memory in seaf-server. Upon receiving a token from sync client or SeaDrive client, the server checks whether the token exist in the cache. However, if the token exists in cache, the server doesn't check whether it's associated with the specific library in the URL. This vulnerability makes it possible to use any valid sync token to access data from any **known** library. Note that the attacker has to first find out the ID of a library which it has no access to. The library ID is a random UUID, which is not possible to be guessed. There are no workarounds for this issue.

Please bump to 8.0.8.

Comment 1 Quentin Retornaz 2021-12-15 16:53:53 UTC

Hello, as far as I can see, et only affets seafile-server which is not not in portage tree at the time on writing.

Comment 2 John Helmert III archtester

2021-12-15 21:19:12 UTC

Alright, I guess this is invalid then.