CVE-2017-7418
Summary
| CVE | CVE-2017-7418 |
|---|---|
| State | PUBLISHED |
| Assigner | mitre |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2017-04-04 17:59:00 UTC |
| Updated | 2025-04-20 01:37:25 UTC |
| Description | 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. |
Risk And Classification
Primary CVSS: v3.0 5.5 MEDIUM from [email protected]
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Problem Types: CWE-59 | n/a
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.0 | [email protected] | Primary | 5.5 | MEDIUM | CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N |
| 2.0 | [email protected] | Primary | 2.1 | AV:L/AC:L/Au:N/C:N/I:P/A:N |
CVSS v3.0 Breakdown
Attack Vector
LocalAttack Complexity
LowPrivileges Required
LowUser Interaction
NoneScope
UnchangedConfidentiality
NoneIntegrity
HighAvailability
NoneCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
CVSS v2.0 Breakdown
Access Vector
LocalAccess Complexity
LowAuthentication
NoneConfidentiality
NoneIntegrity
PartialAvailability
NoneAV:L/AC:L/Au:N/C:N/I:P/A:N
NVD Known Affected Configurations (CPE 2.3)
| Type | Vendor | Product | Version | Update | Edition | Language |
|---|---|---|---|---|---|---|
| Application | Proftpd | Proftpd | 1.3.6 | All | All | All |
| Application | Proftpd | Proftpd | 1.3.6 | rc1 | All | All |
| Application | Proftpd | Proftpd | 1.3.6 | rc2 | All | All |
| Application | Proftpd | Proftpd | 1.3.6 | rc3 | All | All |
| Application | Proftpd | Proftpd | 1.3.6 | rc4 | All | All |
| Application | Proftpd | Proftpd | All | d | All | All |
Vendor Declared Affected Products
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| Walk the entire DefaultRoot path, checking for symlinks of any compon… by Castaglia · Pull Request #444 · proftpd/proftpd · GitHub | af854a3a-2127-422b-91ae-364da2661108 | github.com | Issue Tracking, Patch, Third Party Advisory |
| [security-announce] openSUSE-SU-2019:1870-1: important: Security update | af854a3a-2127-422b-91ae-364da2661108 | lists.opensuse.org | |
| Backporting recursive handling of DefaultRoot path, when AllowChrootS… · proftpd/proftpd@ecff21e · GitHub | af854a3a-2127-422b-91ae-364da2661108 | github.com | Issue Tracking, Patch, Third Party Advisory |
| [security-announce] openSUSE-SU-2019:1836-1: important: Security update | af854a3a-2127-422b-91ae-364da2661108 | lists.opensuse.org | |
| ProFTPD CVE-2017-7418 Local Security Bypass Vulnerability | af854a3a-2127-422b-91ae-364da2661108 | www.securityfocus.com | Third Party Advisory, VDB Entry |
| [security-announce] openSUSE-SU-2020:0031-1: moderate: Security update f | af854a3a-2127-422b-91ae-364da2661108 | lists.opensuse.org | |
| Merge pull request #444 from proftpd/auth-symlinks-anywhere-in-chroot · proftpd/proftpd@f59593e · GitHub | af854a3a-2127-422b-91ae-364da2661108 | github.com | Issue Tracking, Patch, Third Party Advisory |
| Bug 4295 – AllowChrootSymlinks off does not check entire DefaultRoot path for symlinks | af854a3a-2127-422b-91ae-364da2661108 | bugs.proftpd.org | Issue Tracking, Patch |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
There are currently no legacy QID mappings associated with this CVE.