Deserialization in Limesurvey
CVE-2018-17057
An issue was discovered in TCPDF before 6.2.22. Attackers can trigger deserialization of arbitrary data via the phar:// wrapper.
Vulnerability class: Insecure Deserialization
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.262 (97.9th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 98th percentile — 97.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.262 · newest: 0.262 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/tecnickcom/TCPDF/commit/1861e33fe05f653b67d070f7c106463e7a5c26ed (Patch, Third Party Advisory)
- seclists.org/fulldisclosure/2019/Mar/36 (mailing-list, Mailing List, Third Party Advisory)
- packetstormsecurity.com/files/152200/TCPDF-6.2.19-Deserialization-Remote-Code-E… (VDB Entry, Third Party Advisory)
- github.com/LimeSurvey/LimeSurvey/commit/1cdd78d27697b3150bb44aaa7af1a81062a591a5 (Patch, Third Party Advisory)
- www.exploit-db.com/exploits/46634/ (VDB Entry, Third Party Advisory, exploit)
- packetstormsecurity.com/files/152360/LimeSurvey-Deserialization-Remote-Code-Exe… (Exploit, VDB Entry, Third Party Advisory)
- contao.org/en/news/security-vulnerability-cve-2018-17057.html (Third Party Advisory)
Frequently asked questions
- What is CVE-2018-17057?
- CVE-2018-17057 is a critical-severity vulnerability in Limesurvey, classified under Deserialization of Untrusted Data. CVSS score: 9.8/10. Published 2018-09-14.
- How severe is CVE-2018-17057?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2018-17057 known to be exploited?
- 11 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.