Multiple vulnerabilities in Moodle



| Updated: 2023-01-16
Risk Low
Patch available YES
Number of vulnerabilities 2
CVE-ID CVE-2011-4305
CVE-2011-4306
CWE-ID CWE-20
CWE-79
Exploitation vector Network
Public exploit N/A
Vulnerable software
 Moodle
Web applications / Other software

Vendor moodle.org

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Input validation error

EUVDB-ID: #VU43892

Risk: Low

CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2011-4305

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote #AU# to perform service disruption.

message/refresh.php in Moodle 1.9.x before 1.9.14 allows remote authenticated users to cause a denial of service (infinite request loop) via a URL that specifies a zero wait time for message refreshing.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Moodle: 1.9 - 1.9.13

CPE2.3 External links

https://git.moodle.org/gw?p=moodle.git;a=commit;h=97f258fabb3ebfa7acc7c02cb59de92b01710f99
https://moodle.org/mod/forum/discuss.php?d=188318
https://bugzilla.redhat.com/show_bug.cgi?id=747444


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated privileged user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Cross-site scripting

EUVDB-ID: #VU43893

Risk: Low

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2011-4306

CWE-ID: CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Exploit availability: No

Description

Vulnerability allows a remote attacker to perform Cross-site scripting attacks.

An input validation error exists in course/editsection.html in Moodle 1.9.x before 1.9.14. A remote authenticated attacker can trick the victim to follow a specially crafted link and execute arbitrary HTML and script code in victim's browser in security context of vulnerable website.

Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Moodle: 1.9 - 1.9.13

CPE2.3 External links

https://git.moodle.org/gw?p=moodle.git;a=commit;h=4a2acd8c7e6c869d5fd5aa686e6e0a3f20c97f15
https://moodle.org/mod/forum/discuss.php?d=188319
https://bugzilla.redhat.com/show_bug.cgi?id=747444


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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