LimeSurvey 2.0+ - 2.06+ Unauthenticated Arbitrary File Download via Serialized Backup Payload
36Vexday Risk Score
Patch soon. It has a working public exploit.
ssvc Attendcvss 8.7epss 1.2%
from disclosure to weapon0 days
Published on NVDJul 16
metasploitOct 12
exploitation probability
1.2%top 34% of all CVEs
observed exploitation
nono source reports it
An unauthenticated file download vulnerability exists in LimeSurvey versions from 2.0+ up to and including 2.06+ Build 151014. The application fails to validate serialized input to the admin backup endpoint (`index.php/admin/update/sa/backup`), allowing attackers to specify arbitrary file paths using a crafted `datasupdateinfo` payload. The files are packaged in a ZIP archive and made available for download without authentication. This vulnerability can be exploited to read arbitrary files on the host system, including sensitive OS and configuration files.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
Affected products
LimeSurvey GmbH · LimeSurveyReferences
https://packetstorm.news/files/id/180855https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/auxiliary/admin/http/limesurvey_file_download.rbhttps://sec-consult.com/vulnerability-lab/advisory/multiple-critical-vulnerabilities-in-lime-survey/https://web.archive.org/web/20210123073627/https://www.limesurvey.org/blog/22-security/136-limesurvey-security-advisory-10-2015https://www.vulncheck.com/advisories/limesurvey-unauthenticated-arbitrary-file-download