Vulnerability in Proftpd
CVE-2017-7418
ProFTPD before 1.3.5e and 1.3.6 before 1.3.6rc5 controls whether the home directory of a user could contain a symbolic link through the AllowChrootSymlinks configuration option, but checks only the last path component when enforcing AllowChrootSymlinks. Attackers with local access could bypass the AllowChrootSymlinks control by replacing a path component (other than the last one) with a symbolic link. The threat model includes an attacker who is not granted full filesystem access by a hosting provider, but can reconfigure the home directory of an FTP user.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N.
EPSS exploit prediction
EPSS: 0.004 (33.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 34th percentile — 33.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
- Proftpd — versions 1.3.6
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/proftpd/proftpd/commit/ecff21e0d0e84f35c299ef91d7fda088e516d4ed (Patch, Third Party Advisory, Issue Tracking)
- github.com/proftpd/proftpd/commit/f59593e6ff730b832dbe8754916cb5c821db579f (Patch, Third Party Advisory, Issue Tracking)
- bugs.proftpd.org/show_bug.cgi (Patch, Issue Tracking)
- www.securityfocus.com/bid/97409 (VDB Entry, Third Party Advisory, vdb-entry)
- github.com/proftpd/proftpd/pull/444/commits/349addc3be4fcdad9bd4ec01ad1ccd916c8… (Patch, Third Party Advisory, Issue Tracking)
- lists.opensuse.org/opensuse-security-announce/2019-08/msg00004.html (vendor-advisory)
- lists.opensuse.org/opensuse-security-announce/2019-08/msg00022.html (vendor-advisory)
- lists.opensuse.org/opensuse-security-announce/2020-01/msg00009.html (vendor-advisory)
Frequently asked questions
- What is CVE-2017-7418?
- CVE-2017-7418 is a medium-severity vulnerability in Proftpd, classified under Improper Link Resolution Before File Access. CVSS score: 5.5/10. Published 2017-04-04.
- How severe is CVE-2017-7418?
- Medium severity. CVSS v3 base score is 5.5 out of 10.
- Is CVE-2017-7418 known to be exploited?
- 13 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.