| Vulnerability Name: | CVE-2020-25630 (CCN-192793) |
| Assigned: | 2020-09-21 |
| Published: | 2020-09-21 |
| Updated: | 2020-12-08 |
| Summary: | 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.
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| CVSS v3 Severity: | 7.5 High (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
6.5 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C)| Exploitability Metrics: | Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None | | Scope: | Scope (S): Unchanged
| | Impact Metrics: | Confidentiality (C): None
Integrity (I): None
Availibility (A): High |
5.3 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L)
4.6 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C)| Exploitability Metrics: | Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None | | Scope: | Scope (S): Unchanged
| | Impact Metrics: | Confidentiality (C): None
Integrity (I): None
Availibility (A): Low |
|
| CVSS v2 Severity: | 5.0 Medium (CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P)| Exploitability Metrics: | Access Vector (AV): Network
Access Complexity (AC): Low
Authentication (Au): None | | Impact Metrics: | Confidentiality (C): None
Integrity (I): None
Availibility (A): Partial |
5.0 Medium (CCN CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P)| Exploitability Metrics: | Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): None
| | Impact Metrics: | Confidentiality (C): None
Integrity (I): None
Availibility (A): Partial |
|
| Vulnerability Type: | CWE-400
|
| Vulnerability Consequences: | Denial of Service |
| References: | Source: MITRE
Type: CNA
CVE-2020-25630
Source: XF
Type: UNKNOWN
moodle-cve202025630-dos(192793)
Source: CCN
Type: Moodle Security Advisory MSA-20-0014
Denial of service risk in file picker unzip functionality
Source: CONFIRM
Type: Patch, Vendor Advisory
https://moodle.org/mod/forum/discuss.php?d=410842
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| Vulnerable Configuration: | Configuration 1:
cpe:/a:moodle:moodle:*:*:*:*:*:*:*:* (Version >= 3.5.0 and < 3.5.14)OR cpe:/a:moodle:moodle:*:*:*:*:*:*:*:* (Version >= 3.7.0 and < 3.7.8)OR cpe:/a:moodle:moodle:*:*:*:*:*:*:*:* (Version >= 3.8.0 and < 3.8.5)OR cpe:/a:moodle:moodle:*:*:*:*:*:*:*:* (Version >= 3.9.0 and < 3.9.2)
Configuration CCN 1:
cpe:/a:moodle:moodle:3.5.0:*:*:*:*:*:*:*OR cpe:/a:moodle:moodle:3.7.0:*:*:*:*:*:*:*OR cpe:/a:moodle:moodle:3.9.0:-:*:*:*:*:*:*OR cpe:/a:moodle:moodle:3.9.1:*:*:*:*:*:*:*OR cpe:/a:moodle:moodle:3.8.4:*:*:*:*:*:*:*OR cpe:/a:moodle:moodle:3.7.7:*:*:*:*:*:*:*
 Denotes that component is vulnerable |
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