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AUSCERT External Security Bulletin Redistribution
ESB-2019.0179
moodle blind SSRF & multiple cross-site scripting vulnerabilities
22 January 2019
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AusCERT Security Bulletin Summary
---------------------------------
Product: moodle
Publisher: moodle
Operating System: Windows
UNIX variants (UNIX, Linux, OSX)
Impact/Access: Cross-site Scripting -- Existing Account
Provide Misleading Information -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2019-3810 CVE-2019-3809 CVE-2019-3808
Original Bulletin:
https://moodle.org/mod/forum/discuss.php?d=381228
https://moodle.org/mod/forum/discuss.php?d=381230
https://moodle.org/mod/forum/discuss.php?d=381229
Comment: This bulletin contains three (3) advisories.
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Security announcements
MSA-19-0001: Manage groups capability is missing XSS risk flag
Monday, 21 January 2019, 12:14 PM
The 'manage groups' capability did not have the 'XSS risk' flag assigned to it,
but does have that access in certain places. Note that the capability is
intended for use by trusted users, and is only assigned to teachers and
managers by default.
Severity : Minor
Affected : 3.6 to 3.6.1, 3.5 to 3.5.3, 3.4 to 3.4.6, 3.1 to 3.1.15 and
earlier unsupported versions
Fixed : 3.6.2, 3.5.4, 3.4.7 and 3.1.16
Reporter : Fariskhi Vidyan
CVE : CVE-2019-3808
Workaround : Patch/Upgrade
Changes : http://git.moodle.org/gw?p=moodle.git&a=search&h=HEAD&st=commit&s=M
DL-64395
Tracker : MDL-64395 Manage groups capability is missing XSS risk flag
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Security announcements
MSA-19-0002: Blind SSRF Risk in /badges/mybackpack.php
Monday, 21 January 2019, 12:16 PM
The mybackpack functionality allowed setting the URL of badges, when it should
be restricted to the Mozilla Open Badges backpack URL. This resulted in the
possibility of blind SSRF via requests made by the page.
Severity : Minor
Affected : 3.1 to 3.1.15 and earlier unsupported versions
Fixed : 3.1.16
Reporter : Alejandro Parodi
CVE : CVE-2019-3809
Workaround : Ensure your firewall rules effectively protect other internal
hosts and ports from unauthorised access.
Changes : http://git.moodle.org/gw?p=moodle.git&a=search&h=HEAD&st=commit&s=M
DL-64222
Tracker : MDL-64222 Blind SSRF risk in /badges/mybackpack.php
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Security announcements
MSA-19-0003: User full name is not escaped in the un-linked userpix page
Monday, 21 January 2019, 12:17 PM
The /userpix/ page did not escape users' full names, which are included as text
when hovering over profile images. Note this page is not linked to by default
and its access is restricted.
Severity : Minor
Affected : 3.6 to 3.6.1, 3.5 to 3.5.3, 3.4 to 3.4.6, 3.1 to 3.1.15 and
earlier unsupported versions
Fixed : 3.6.2, 3.5.4, 3.4.7 and 3.1.16
Reporter : Fariskhi Vidyan
CVE : CVE-2019-3810
Workaround : Patch/Upgrade
Changes : http://git.moodle.org/gw?p=moodle.git&a=search&h=HEAD&st=commit&s=M
DL-64372
Tracker : MDL-64372 User full name is not escaped in the un-linked userpix
page
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