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5 vulnerabilities found for proftpd by proftpd
CVE-2026-63091 (GCVE-0-2026-63091)
Vulnerability from cvelistv5 – Published: 2026-07-20 14:22 – Updated: 2026-07-28 01:49 X_Open Source
VLAI
EPSS
VEX
Title
ProFTPD mod_sftp Signed Integer Overflow via SCP Size-Record Parser
Summary
ProFTPD before 1.3.9c and 1.3.10rc3 contains a signed integer overflow vulnerability in the mod_sftp module's SCP size-record parser that allows authenticated low-privilege attackers to bypass ASLR by sending a crafted file size value of UINT64_MAX, which results in a negative off_t value. Attackers can exploit the subsequent conversion to uint32_t, causing an approximately 4 GB requested read length and forcing the server to read beyond the end of the SSH channel data and write overread process memory into the uploaded file. In tested configurations, the disclosed data contains libc, libcrypto, and PIE pointers sufficient to derive their randomized base addresses, thereby bypassing ASLR and enabling reliable exploitation of memory corruption vulnerabilities in the same process.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-20 16:32 UTC
Assigner
VulnCheck
CNA
References
6 references
| URL | Tags |
|---|---|
| https://github.com/proftpd/proftpd/blob/master/RE… | release-notes |
| https://github.com/proftpd/proftpd/releases/tag/v… | patchrelease-notes |
| https://github.com/proftpd/proftpd/releases/tag/v1.3.9c | patchrelease-notes |
| https://github.com/proftpd/proftpd/pull/2201 | issue-trackingpatch |
| https://github.com/proftpd/proftpd/commit/b9b7dde… | patch |
| https://www.vulncheck.com/advisories/proftpd-mod-… | third-party-advisory |
Impacted products
Date Public
2026-07-01 00:00
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CVE-2026-63090 (GCVE-0-2026-63090)
Vulnerability from cvelistv5 – Published: 2026-07-20 14:22 – Updated: 2026-07-28 01:49 X_Open Source
VLAI
EPSS
VEX
Title
ProFTPD mod_sftp Heap Buffer Overflow via SFTP Packet Reassembly
Summary
ProFTPD before 1.3.9c and 1.3.10rc3 contains a heap-based buffer overflow vulnerability in the mod_sftp module that allows authenticated low-privilege attackers to achieve arbitrary code execution by sending crafted SFTP packet fragments exceeding the 16 KB reassembly buffer in the fxp.c component. Attackers can supply oversized fragments to trigger an incorrectly conditioned reallocation, corrupt pool freelist metadata, overwrite the root_fs BSS global pointer to reference a fake filesystem struct, and redirect pr_fsio_stat() to system() via a crafted RENAME request.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-21 15:33 UTC
CWE
- CWE-122 - Heap-based Buffer Overflow
Assigner
VulnCheck
CNA
References
6 references
| URL | Tags |
|---|---|
| https://github.com/proftpd/proftpd/blob/master/RE… | release-notes |
| https://github.com/proftpd/proftpd/releases/tag/v… | patchrelease-notes |
| https://github.com/proftpd/proftpd/releases/tag/v1.3.9c | patchrelease-notes |
| https://github.com/proftpd/proftpd/issues/2190 | issue-tracking |
| https://github.com/proftpd/proftpd/commit/4ee8701… | patch |
| https://www.vulncheck.com/advisories/proftpd-mod-… | third-party-advisory |
Impacted products
Date Public
2026-06-26 00:00
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CVE-2026-44331 (GCVE-0-2026-44331)
Vulnerability from cvelistv5 – Published: 2026-05-05 19:41 – Updated: 2026-05-06 15:25
VLAI
EPSS
VEX
Summary
In ProFTPD through 1.3.9a before 7666224, a SQL injection vulnerability in sqltab_fetch_clients_cb() in contrib/mod_wrap2_sql.c allows a remote attacker to inject arbitrary SQL commands via a crafted domain name that is accessed in a reverse DNS lookup. When "UseReverseDNS on" is enabled, the attacker-supplied hostname is passed unescaped into SQL queries. The character restrictions of DNS names may affect exploitability.
Severity
8.1 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-06 15:22 UTC
CWE
- CWE-89 - Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
Assigner
mitre
CNA
References
Impacted products
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CVE-2026-42167 (GCVE-0-2026-42167)
Vulnerability from cvelistv5 – Published: 2026-04-28 00:00 – Updated: 2026-05-01 18:22
VLAI
EPSS
VEX
Summary
mod_sql in ProFTPD before 1.3.9a allows remote attackers to execute arbitrary code via a username, in scenarios where there is logging of USER requests with an expansion such as %U, and the SQL backend allows commands (e.g., COPY TO PROGRAM).
Severity
8.1 (High)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-04-29 12:51 UTC
CWE
- CWE-89 - Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
Assigner
mitre
CNA
References
7 references
Impacted products
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CVE-2021-47865 (GCVE-0-2021-47865)
Vulnerability from cvelistv5 – Published: 2026-01-21 17:27 – Updated: 2026-04-07 14:06
VLAI
EPSS
VEX
Title
ProFTPD 1.3.7a - Remote Denial of Service
Summary
ProFTPD 1.3.7a contains a denial of service vulnerability that allows attackers to overwhelm the server by creating multiple simultaneous FTP connections. Attackers can repeatedly establish connections using threading to exhaust server connection limits and block legitimate user access.
Severity
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-01-22 21:57 UTC
CWE
- CWE-770 - Allocation of Resources Without Limits or Throttling
Assigner
VulnCheck
CNA
References
4 references
| URL | Tags |
|---|---|
| https://www.exploit-db.com/exploits/49697 | exploit |
| http://www.proftpd.org/ | product |
| https://github.com/proftpd/proftpd/issues/1298 | issue-tracking |
| https://www.vulncheck.com/advisories/proftpd-a-re… | third-party-advisory |
Impacted products
Date Public
2021-03-22 00:00
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