The STARTTLS implementation in ftp_parser.c in Pure-FTPd before 1.0.30 does not properly restrict I/O buffering, which allows man-in-the-middle attackers to insert commands into encrypted FTP sessions by sending a cleartext command that is processed after TLS is in place, related to a "plaintext command injection" attack, a similar issue to CVE-2011-0411
Published May 23, 2011
5.8
MEDIUMCVSS 2.0
EPSS 33.34%
Description
The STARTTLS implementation in ftp_parser.c in Pure-FTPd before 1.0.30 does not properly restrict I/O buffering, which allows man-in-the-middle attackers to insert commands into encrypted FTP sessions by sending a cleartext command that is processed after TLS is in place, related to a "plaintext command injection" attack, a similar issue to CVE-2011-0411.
Affected products
No data.
- ≤ 1.0.29
- 0.90
- 0.91
- 0.92
- 0.93
- 0.94
- 0.95
- 0.95-pre1
- 0.95-pre2
- 0.95-pre3
- 0.95-pre4
- 0.95.1
- 0.95.2
- 0.96
- 0.96.1
- 0.96pre1
- 0.97-final
- 0.97.1
- 0.97.2
- 0.97.3
- 0.97.4
- 0.97.5
- 0.97.6
- 0.97.7
- 0.97.7pre1
- 0.97.7pre2
- 0.97.7pre3
- 0.97pre1
- 0.97pre2
- 0.97pre3
- 0.97pre4
- 0.97pre5
- 0.98-final
- 0.98.1
- 0.98.2
- 0.98.2a
- 0.98.3
- 0.98.4
- 0.98.5
- 0.98.6
- 0.98.7
- 0.98pre1
- 0.98pre2
- 0.99
- 0.99.1
- 0.99.1a
- 0.99.1b
- 0.99.2
- 0.99.2a
- 0.99.3
- 0.99.4
- 0.99.9
- 0.99a
- 0.99b
- 0.99pre1
- 0.99pre2
- 1.0.0
- 1.0.1
- 1.0.2
- 1.0.3
- 1.0.4
- 1.0.5
- 1.0.6
- 1.0.7
- 1.0.8
- 1.0.9
- 1.0.10
- 1.0.11
- 1.0.12
- 1.0.13a
- 1.0.14
- 1.0.15
- 1.0.16a
- 1.0.16b
- 1.0.16c
- 1.0.17
- 1.0.17a
- 1.0.18
- 1.0.19
- 1.0.20
- 1.0.21
- 1.0.22
- 1.0.24
- 1.0.25
- 1.0.26
- 1.0.27
- 1.0.28
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
AV:N/AC:M/Au:N/C:P/I:P/A:N
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 3, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (14 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 3, 2026 | 33.34% (0.33341) | 98.33th | v5 (v2026.06.15) |
| Jun 15, 2026 | 33.34% (0.33341) | 98.15th | v5 (v2026.06.15) |
| Mar 30, 2025 | 22.18% (0.22184) | 95.31th | v4 (v2025.03.14) |
| Mar 29, 2025 | 38.78% (0.38778) | 95.87th | v4 (v2025.03.14) |
| Mar 28, 2025 | 22.18% (0.22184) | 95.31th | v4 (v2025.03.14) |
| Mar 27, 2025 | 38.78% (0.38778) | 96.76th | v4 (v2025.03.14) |
| Mar 20, 2025 | 22.59% (0.22588) | 95.40th | v4 (v2025.03.14) |
| Mar 19, 2025 | 38.78% (0.38778) | 96.82th | v4 (v2025.03.14) |
| Mar 17, 2025 | 25.18% (0.25182) | 95.73th | v4 (v2025.03.14) |
| Dec 17, 2024 | 82.47% (0.82466) | 98.63th | v3 (v2023.03.01) |
| Mar 7, 2023 | 89.72% (0.89715) | 98.13th | v3 (v2023.03.01) |
| Mar 6, 2023 | 6.09% (0.06088) | 90.58th | v2 (v2022.01.01) |
| Apr 1, 2022 | 6.09% (0.06088) | 89.70th | v2 (v2022.01.01) |
| Feb 4, 2022 | 6.09% (0.06088) | 77.55th | v2 (v2022.01.01) |
References (14)
- http://archives.pureftpd.org/archives.cgi?100:mss:3906:201103:cpeojfkblajnpinkeadd mailing-listx_refsource_MLIST
- http://archives.pureftpd.org/archives.cgi?100:mss:3910:201103:cpeojfkblajnpinkeadd mailing-listx_refsource_MLISTPatch
- http://lists.opensuse.org/opensuse-security-announce/2011-05/msg00005.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-updates/2011-05/msg00029.html mailing-listx_refsource_MLIST
- http://openwall.com/lists/oss-security/2011/04/11/14 mailing-listx_refsource_MLIST
- http://openwall.com/lists/oss-security/2011/04/11/3 mailing-listx_refsource_MLIST
- http://openwall.com/lists/oss-security/2011/04/11/7 mailing-listx_refsource_MLIST
- http://openwall.com/lists/oss-security/2011/04/11/8 mailing-listx_refsource_MLIST
- http://secunia.com/advisories/43988 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://secunia.com/advisories/44548 third-party-advisoryx_refsource_SECUNIA
- http://www.pureftpd.org/project/pure-ftpd/news x_refsource_CONFIRM
- https://bugzilla.novell.com/show_bug.cgi?id=686590 x_refsource_CONFIRMPatch
- https://bugzilla.redhat.com/show_bug.cgi?id=683221 x_refsource_CONFIRM
- https://github.com/jedisct1/pure-ftpd/commit/65c4d4ad331e94661de763e9b5304d28698999c4 x_refsource_CONFIRMPatch
Change history (0)
No recorded changes yet.