In ProFTPD 1.3.7, it is possible to corrupt the memory pool by interrupting the data…
Priority MEDIUM 52CWE-416Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-416 and the CVSS impact.
Summary
In ProFTPD 1.3.7, it is possible to corrupt the memory pool by interrupting the data transfer channel. This triggers a use-after-free in alloc_pool in pool.c, and possible remote code execution.
Why it matters now
EPSS 0.11823 96th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 13
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:proftpd:proftpd:1.3.7:*:*:*:*:*:*:* | 1.3.7 | Vulnerable | ProFTPD |
| cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* | 8.0 | Vulnerable | Debian |
| cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* | 9.0 | Vulnerable | Debian |
| cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* | 10.0 | Vulnerable | Debian |
| cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:* | 30 | Vulnerable | Fedoraproject |
| cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:* | 31 | Vulnerable | Fedoraproject |
| cpe:2.3:a:opensuse:backports_sle:15.0:-:*:*:*:*:*:* | 15.0 | Vulnerable | openSUSE |
| cpe:2.3:a:opensuse:backports_sle:15.0:sp1:*:*:*:*:*:* | 15.0 sp1 | Vulnerable | openSUSE |
| cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:* | 15.1 | Vulnerable | openSUSE |
| cpe:2.3:o:siemens:simatic_net_cp_1545-1_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Siemens |
- cpe:2.3:a:proftpd:proftpd:1.3.7:*:*:*:*:*:*:* Versions 1.3.7 Vulnerable ·ProFTPD
- cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* Versions 8.0 Vulnerable ·Debian
- cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* Versions 9.0 Vulnerable ·Debian
- cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* Versions 10.0 Vulnerable ·Debian
- cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:* Versions 30 Vulnerable ·Fedoraproject
- cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:* Versions 31 Vulnerable ·Fedoraproject
- cpe:2.3:a:opensuse:backports_sle:15.0:-:*:*:*:*:*:* Versions 15.0 Vulnerable ·openSUSE
- cpe:2.3:a:opensuse:backports_sle:15.0:sp1:*:*:*:*:*:* Versions 15.0 sp1 Vulnerable ·openSUSE
- cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:* Versions 15.1 Vulnerable ·openSUSE
- cpe:2.3:o:siemens:simatic_net_cp_1545-1_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Siemens
Show 3 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:h:siemens:simatic_net_cp_1545-1:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Siemens |
| cpe:2.3:o:siemens:simatic_net_cp_1543-1_firmware:*:*:*:*:*:*:*:* | before 3.0 | Vulnerable | Siemens |
| cpe:2.3:h:siemens:simatic_net_cp_1543-1:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Siemens |
- cpe:2.3:h:siemens:simatic_net_cp_1545-1:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Siemens
- cpe:2.3:o:siemens:simatic_net_cp_1543-1_firmware:*:*:*:*:*:*:*:* Versions before 3.0 Vulnerable ·Siemens
- cpe:2.3:h:siemens:simatic_net_cp_1543-1:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Siemens
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Timeline
- 2026-10-02 Threatist record created from CVE-2020-9273
- 2026-10-03 Alias added: GHSA-j879-hg9w-v5qv
References
Advisory 12
- https://github.com/proftpd/proftpd/blob/master/RELEASE_NOTES
- https://github.com/proftpd/proftpd/issues/903
- [debian-lts-announce] 20200221 [SECURITY] [DLA 2115-1] proftpd-dfsg security update
- DSA-4635
- FEDORA-2020-76c707cff0
- FEDORA-2020-876b1f664e
- openSUSE-SU-2020:0273
- [debian-lts-announce] 20200302 [SECURITY] [DLA 2115-2] proftpd-dfsg regression update
- GLSA-202003-35
- https://cert-portal.siemens.com/productcert/pdf/ssa-679335.pdf
- [oss-security] 20210824 Possible memory leak on getspnam / getspnam_r
- [oss-security] 20210906 Re: Possible memory leak on getspnam / getspnam_r
Sources
- CVE-2020-9273 · CVE Program
- CVE-2020-9273 · NVD
- FIRST EPSS
- GHSA-j879-hg9w-v5qv · GitHub Advisory Database · CC BY 4.0
- CVE-2020-9273 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences