Stack-based buffer overflow in the sreplace function in ProFTPD 1.3.0 and earlier allows remote attackers, probably authenticated, to cause
Noroxi assessment
Priority: This week (action score 63/100)
- A ready-made attack module is public (Metasploit); exploiting it takes no special expertise.
- Probability of exploitation in the next 30 days: 75.4% (FIRST EPSS); higher than 99.5% of all records.
- No special conditions are required; it is repeatable.
- Fixed version: proftpd-dfsg (Debian:12) 1.3.0-15; proftpd (Debian:3.1) 1.2.10-15sarge3; proftpd (openSUSE:Tumbleweed) 1.3.6e-1.10.
- Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).
Don’t wait for the next maintenance window. Upgrade to proftpd-dfsg (Debian:12) 1.3.0-15; proftpd (Debian:3.1) 1.2.10-15sarge3; proftpd (openSUSE:Tumbleweed) 1.3.6e-1.10 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
Stack-based buffer overflow in the sreplace function in ProFTPD 1.3.0 and earlier allows remote attackers, probably authenticated, to cause a denial of service and execute arbitrary code, as demonstrated by vd_proftpd.pm, a "ProFTPD remote exploit."
- Published
- Nov 8, 2006
- Updated
- Jun 16, 2026
- EPSS
- 75.5% · 100th percentile
- CWE
- CWE-119
Report tools
Action score
63
This week
Don’t wait for the next maintenance window.
- CVSS
- 40 / 40 · 10.0 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 23 / 30 · 75.5%
Get told when this record changes
- Not in KEV: no record of exploitation in the wild
- Weaponized exploit exists
- A fix has been released
If any of these changes, we'll tell you in the daily email digest.
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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
Is your version affected?
Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.
| Vendor | Product | CPE |
|---|---|---|
| proftpd project | proftpd | cpe:2.3:a:proftpd_project:proftpd |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- proftpd project proftpdup to 1.3.0 inclusive
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 1.3.0-15 | 1.3.0-15 |
| Debian:3.1 | proftpd | before 1.2.10-15sarge3 | 1.2.10-15sarge3 |
| openSUSE:Tumbleweed | proftpd | before 1.3.6e-1.10 | 1.3.6e-1.10 |
Same product
proftpd project: all recordsOther highest-scoring records for the same primary product.
- CVE-2003-0831ProFTPD 1.2.7 through 1.2.9rc2 does not properly translate newline characters when transferring files in ASCII mode, which allows remote att54Plan
- CVE-2009-0542SQL injection vulnerability in ProFTPD Server 1.3.1 through 1.3.2rc2 allows remote attackers to execute arbitrary SQL commands via a "%" (pe52Plan
- CVE-1999-0368Buffer overflows in wuarchive ftpd (wu-ftpd) and ProFTPD lead to remote root access, a.k.a.52Plan
- CVE-1999-0911Buffer overflow in ProFTPD, wu-ftpd, and beroftpd allows remote attackers to gain root access via a series of MKD and CWD commands that crea51Plan
- CVE-2003-0500SQL injection vulnerability in the PostgreSQL authentication module (mod_sql_postgres) for ProFTPD before 1.2.9rc1 allows remote attackers t45Plan
- CVE-2006-6170Buffer overflow in the tls_x509_name_oneline function in the mod_tls module, as used in ProFTPD 1.3.0a and earlier, and possibly other produ35Monitor
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 | 1.2.10-15sarge3 · Debian:3.1 | Package registry (OSV) |
| debian:proftpd-dfsg | 1.3.0-15 · Debian:12 | Package registry (OSV) |
| opensuse:proftpd | 1.3.6e-1.10 · openSUSE:Tumbleweed | Package registry (OSV) |
Exploit status
Weaponized
A ready exploit tool or active in-the-wild use is known for this vulnerability. This should be your top priority.
Evidence
- Metasploit module ×1
- Exploit-DB entry ×2
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 | 2011-01-09 |
| Exploit-DB entry | remote | 2006-11-27 |
| Metasploit module | exploit/linux/ftp/proftp_sreplaceProFTPD 1.2 - 1.3.0 sreplace Buffer Overflow (Linux)exploit | 2006-11-26 |
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.
- Published
- Metasploit+17 d
- First PoC+18 d
- TodayOct 14, 2026+7280 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
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- C · data can be read
- Integrity
- C · data or configuration can be modified
- Availability
- C · the service can be disrupted
- Attack complexity
- Low
- Confidentiality impact
- C
- Integrity impact
- C
- Availability impact
- C
Weakness class (CWE)
CWE-119 · Improper Restriction of Operations within the Bounds of a Memory BufferCVSS vector
AV:N/AC:L/Au:N/C:C/I:C/A:C
nvd-primary
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)
- Buffer Overflow via Environment VariablesCAPEC-10likelihood: High · High
- Overflow BuffersCAPEC-100likelihood: High · Very High
- Buffer ManipulationCAPEC-123likelihood: High · Very High
- Client-side Injection-induced Buffer OverflowCAPEC-14likelihood: Medium · High
- Filter Failure through Buffer OverflowCAPEC-24likelihood: High · High
- MIME ConversionCAPEC-42likelihood: High · High
- Overflow Binary Resource FileCAPEC-44likelihood: High · Very High
- Buffer Overflow via Symbolic LinksCAPEC-45likelihood: High · High
ATT&CK techniques
—
Change log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
Show all references (19 more)Show less
- gleg.net/vulndisco_meta.shtml
- secunia.com/advisories/22803
- secunia.com/advisories/22821
- secunia.com/advisories/23000
- secunia.com/advisories/23069
- secunia.com/advisories/23125
- secunia.com/advisories/23174
- secunia.com/advisories/23179
- secunia.com/advisories/23184
- secunia.com/advisories/23207
- securitytracker.com/id?1017167
- slackware.com/security/viewer.php?l=slackware-security&y=2006&m=slackware-security.502491
- www.debian.org/security/2006/dsa-1222
- www.gentoo.org/security/en/glsa/glsa-200611-26.xml
- www.mandriva.com/security/advisories?name=MDKSA-2006:217
- www.mandriva.com/security/advisories?name=MDKSA-2006:217-1
- www.openpkg.org/security/advisories/OpenPKG-SA-2006.035-proftpd.html
- www.securityfocus.com/archive/1/452760/100/200/threaded
- www.securityfocus.com/bid/20992
Vendor advisories and official records. Exploit/PoC links are deliberately left out.