ProFTPD Server 1.3.1, with NLS support enabled, allows remote attackers to bypass SQL injection protection mechanisms via invalid, encoded m
Noroxi assessment
Priority: Monitor (action score 32/100)
- Public proof-of-concept code exists (Exploit-DB); there is no record of exploitation in the wild.
- Probability of exploitation in the next 30 days: 15.7% (FIRST EPSS); higher than 96.8% of all records.
- Fixed version: proftpd-dfsg (Debian:12) 1.3.2-1; proftpd-dfsg (Debian:5.0) 1.3.1-17lenny1, 1.3.1-17lenny2; proftpd (openSUSE:Tumbleweed) 1.3.5b-2.5.
- Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).
Low priority for now. Upgrade to proftpd-dfsg (Debian:12) 1.3.2-1; proftpd-dfsg (Debian:5.0) 1.3.1-17lenny1, 1.3.1-17lenny2; proftpd (openSUSE:Tumbleweed) 1.3.5b-2.5 or later.
Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it
ProFTPD Server 1.3.1, with NLS support enabled, allows remote attackers to bypass SQL injection protection mechanisms via invalid, encoded multibyte characters, which are not properly handled in (1) mod_sql_mysql and (2) mod_sql_postgres.
- Published
- Feb 12, 2009
- Updated
- Jun 16, 2026
- EPSS
- 15.8% · 97th percentile
- CWE
- CWE-89
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Report tools
Action score
32
Monitor
Low priority for now.
- CVSS
- 27 / 40 · 6.8 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 5 / 30 · 15.8%
Noroxi analysis
What does it mean in your environment?
The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.
We use this product, ask for helpAffected systems
| Vendor | Product | CPE |
|---|---|---|
| proftpd | proftpd | cpe:2.3:a:proftpd:proftpd |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- proftpd proftpd1.3.1
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| Debian:12 | proftpd-dfsg | before 1.3.2-1 | 1.3.2-1 |
| Debian:5.0 | proftpd-dfsg | before 1.3.1-17lenny1 | 1.3.1-17lenny1 |
| Debian:5.0 | proftpd-dfsg | before 1.3.1-17lenny2 | 1.3.1-17lenny2 |
| openSUSE:Tumbleweed | proftpd | before 1.3.5b-2.5 | 1.3.5b-2.5 |
Same product
proftpd: all recordsOther highest-scoring records for the same primary product.
- CVE-2015-3306The mod_copy module in ProFTPD 1.3.5 allows remote attackers to read and write to arbitrary files via the site cpfr and site cpto commands.KEV100Now
- CVE-2010-4221Multiple stack-based buffer overflows in the pr_netio_telnet_gets function in netio.c in ProFTPD before 1.3.3c allow remote attackers to exe67This week
- CVE-2019-12815An arbitrary file copy vulnerability in mod_copy in ProFTPD up to 1.3.5b allows for remote code execution and information disclosure without56Plan
- CVE-2010-20103ProFTPD 1.3.3c Backdoor Command Execution41Plan
- CVE-2011-4130Use-after-free vulnerability in the Response API in ProFTPD before 1.3.3g allows remote authenticated users to execute arbitrary code via ve40Plan
- CVE-2020-9273In ProFTPD 1.3.7, it is possible to corrupt the memory pool by interrupting the data transfer channel.39Monitor
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| debian:proftpd-dfsg | 1.3.2-1 · Debian:12 | Package registry (OSV) |
| opensuse:proftpd | 1.3.5b-2.5 · openSUSE:Tumbleweed | Package registry (OSV) |
Exploit status
Proof of concept available
A public proof of concept or detection signature exists. Exploit knowledge is out there; don't delay patching.
Evidence
- Exploit-DB entry ×1
Noroxi does not host or link to exploit code. Metasploit module names and Nuclei template ids are shown (names, not code); Exploit-DB entries and PoC repositories are given as counts only.
| Source | Kind | Date |
|---|---|---|
| Exploit-DB entry | remote | 2009-02-10 |
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
- First PoC-3 d
- Published
- TodayOct 12, 2026+6451 d
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
National notice (Türkiye Cybersecurity Directorate / USOM)
Official security notices citing this record; remediation advice is on the agency's page.
- TR-20-633 · Aug 24, 2020(Proftpd Sunucu Güvenlik Güncellemesi)
Technical details
Attack conditions
If successful
- Confidentiality
- P · data can be read
- Integrity
- P · data or configuration can be modified
- Availability
- P · the service can be disrupted
- Attack complexity
- M
- Confidentiality impact
- P
- Integrity impact
- P
- Availability impact
- P
Weakness class (CWE)
CWE-89 · Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')CVSS vector
AV:N/AC:M/Au:N/C:P/I:P/A:P
nvd-primary
Root cause
The query text is built by concatenating user input. The database cannot tell where the data ends and the command begins.
The bug in code
The whole CWE-89 classA representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.
Vulnerable
const owner = req.query.owner;const rows = await db.query( "SELECT * FROM files WHERE owner = '" + owner + "'");Fixed
const owner = req.query.owner;const rows = await db.query( "SELECT * FROM files WHERE owner = $1", [owner]);Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
Attack patterns (CAPEC)
- Command Line Execution through SQL InjectionCAPEC-108likelihood: Low · Very High
- Object Relational Mapping InjectionCAPEC-109likelihood: Low · High
- SQL Injection through SOAP Parameter TamperingCAPEC-110likelihood: High · Very High
- Expanding Control over the Operating System from the DatabaseCAPEC-470Very High
- SQL InjectionCAPEC-66likelihood: High · High
- Blind SQL InjectionCAPEC-7likelihood: High · High
ATT&CK techniques
—
Change log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
- bugs.proftpd.org/show_bug.cgi?id=3173
- secunia.com/advisories/34268
- security.gentoo.org/glsa/glsa-200903-27.xml
- www.debian.org/security/2009/dsa-1730
- www.mandriva.com/security/advisories?name=MDVSA-2009:061
- www.openwall.com/lists/oss-security/2009/02/11/4
- www.openwall.com/lists/oss-security/2009/02/11/5
Vendor advisories and official records. Exploit/PoC links are deliberately left out.