CVE-2017-17454
Mahara 16.10 before 16.10.7 and 17.04 before 17.04.5 and 17.10 before 17.10.2 have a Cross Site Scripting (XSS) vulnerability when a user enters invalid UTF-8 characters.
Does this matter?
Lower severity and a low EPSS score (0.69%). Track it; it rarely justifies an emergency change on its own.
Description
Mahara 16.10 before 16.10.7 and 17.04 before 17.04.5 and 17.10 before 17.10.2 have a Cross Site Scripting (XSS) vulnerability when a user enters invalid UTF-8 characters. These are now going to be discarded in Mahara along with NULL characters and invalid Unicode characters. Mahara will also avoid direct $_GET and $_POST usage where possible, and instead use param_exists() and the correct param_*() function to fetch the expected value.
- CVSS 3.0
- 5.4 MEDIUMCVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
- EPSS
- 0.69% probability · 51th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-79
- Affected
- mahara/mahara
- Source
- cve@mitre.org
References
- https://bugs.launchpad.net/mahara/+bug/1732987Third Party Advisory
- https://mahara.org/interaction/forum/topic.php?id=8149Vendor Advisory
- https://reviews.mahara.org/#/c/8191/Vendor Advisory
- https://bugs.launchpad.net/mahara/+bug/1732987Third Party Advisory
- https://mahara.org/interaction/forum/topic.php?id=8149Vendor Advisory
- https://reviews.mahara.org/#/c/8191/Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.