Bug 1927277 (CVE-2020-25630) - CVE-2020-25630 moodle: decompressed size of zip files leads to denial of service
Summary: CVE-2020-25630 moodle: decompressed size of zip files leads to denial of service
Keywords:
Status: CLOSED UPSTREAM
Alias: CVE-2020-25630
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1927286 1927278
Blocks:
TreeView+ depends on / blocked
 
Reported: 2021-02-10 12:55 UTC by Dhananjay Arunesh
Modified: 2021-02-11 15:01 UTC (History)
4 users (show)

Fixed In Version:
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A flaw was found in Moodle where the decompressed size of zip files was not checked against the available user quota before unzipping them, which could lead to a denial of service risk. This issue affects versions 3.9 to 3.9.1, 3.8 to 3.8.4, 3.7 to 3.7.7, 3.5 to 3.5.13, and earlier unsupported versions. This is fixed in versions 3.9.2, 3.8.5, 3.7.8, and 3.5.14.
Clone Of:
Environment:
Last Closed: 2021-02-11 10:09:45 UTC
Embargoed:

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Description Dhananjay Arunesh 2021-02-10 12:55:47 UTC 
A vulnerability was found in Moodle where the decompressed size of zip files was not checked against available user quota before unzipping them, which could lead to a denial of service risk. This affects versions 3.9 to 3.9.1, 3.8 to 3.8.4, 3.7 to 3.7.7, 3.5 to 3.5.13 and earlier unsupported versions. Fixed in 3.9.2, 3.8.5, 3.7.8 and 3.5.14.
Comment 1 Dhananjay Arunesh 2021-02-10 12:56:44 UTC 
External References:

https://moodle.org/mod/forum/discuss.php?d=410842
Comment 2 Dhananjay Arunesh 2021-02-10 12:57:06 UTC 
Created moodle tracking bugs for this issue:

Affects: fedora-all [bug 1927278]
Comment 3 Dhananjay Arunesh 2021-02-10 13:05:51 UTC 
Created moodle tracking bugs for this issue:

Affects: epel-7 [bug 1927286]
Comment 4 Marian Rehak 2021-02-11 08:53:01 UTC 
Security flaws will close automatically upon closing the last tracker. There is still a tracker for epel-7 that is open. Reopened the flaw.
Comment 5 Product Security DevOps Team 2021-02-11 10:09:45 UTC 
This CVE Bugzilla entry is for community support informational purposes only as it does not affect a package in a commercially supported Red Hat product. Refer to the dependent bugs for status of those individual community products.
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