MEDIUM
Integer overflow in kbdint.c in mod_sftp in ProFTPD 1.3.4d and 1.3.5r3 allows remote attackers to cause a denial of service (memory consumption) via a large response count value in an authentication request, which triggers a large memory allocation
Published Sep 30, 2013
5.0
MEDIUMCVSS 2.0
EPSS 2.99%
Description
Integer overflow in kbdint.c in mod_sftp in ProFTPD 1.3.4d and 1.3.5r3 allows remote attackers to cause a denial of service (memory consumption) via a large response count value in an authentication request, which triggers a large memory allocation.
Affected products
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.
5.0 MEDIUM NVD
AV:N/AC:L/Au:N/C:N/I:N/A:P
Access Vector Network
Access Complexity Low
Authentication None
Confidentiality Impact None
Integrity Impact None
Availability Impact Partial
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
2.99% 0.02985
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.02985
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 1, 2026 | 2.99% (0.02985) | 86.83th | v5 (v2026.06.15) |
| Jun 15, 2026 | 3.03% (0.03029) | 85.72th | v5 (v2026.06.15) |
| Mar 30, 2025 | 2.13% (0.02132) | 82.63th | v4 (v2025.03.14) |
| Mar 29, 2025 | 3.35% (0.03351) | 78.69th | v4 (v2025.03.14) |
| Mar 17, 2025 | 2.34% (0.02345) | 83.77th | v4 (v2025.03.14) |
| Dec 12, 2024 | 2.34% (0.02337) | 90.15th | v3 (v2023.03.01) |
| Jun 17, 2024 | 2.34% (0.02337) | 89.81th | v3 (v2023.03.01) |
| May 13, 2023 | 1.98% (0.01980) | 87.06th | v3 (v2023.03.01) |
| Mar 27, 2023 | 2.24% (0.02237) | 87.79th | v3 (v2023.03.01) |
| Mar 7, 2023 | 2.12% (0.02123) | 87.42th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.32% (0.01319) | 71.27th | v2 (v2022.01.01) |
| Feb 23, 2023 | 1.32% (0.01319) | 71.23th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.32% (0.01319) | 69.22th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.32% (0.01319) | 44.98th | v2 (v2022.01.01) |
Weaknesses (1)
References (6)
- http://bugs.proftpd.org/show_bug.cgi?id=3973 x_refsource_CONFIRMPatch
- http://kingcope.wordpress.com/2013/09/11/proftpd-mod_sftpmod_sftp_pam-invalid-pool-allocation-in-kbdint-authentication/ x_refsource_MISCExploit
- http://lists.opensuse.org/opensuse-updates/2013-10/msg00032.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-updates/2015-06/msg00020.html vendor-advisoryx_refsource_SUSE
- http://www.debian.org/security/2013/dsa-2767 vendor-advisoryx_refsource_DEBIAN
- http://www.openwall.com/lists/oss-security/2013/09/17/6 mailing-listx_refsource_MLISTExploit
| Link | Providers | Tags |
|---|---|---|
| http://bugs.proftpd.org/show_bug.cgi?id=3973 | x_refsource_CONFIRMPatch | |
| http://kingcope.wordpress.com/2013/09/11/proftpd-mod_sftpmod_sftp_pam-invalid-pool-allocation-in-kbdint-authentication/ | x_refsource_MISCExploit | |
| http://lists.opensuse.org/opensuse-updates/2013-10/msg00032.html | vendor-advisoryx_refsource_SUSE | |
| http://lists.opensuse.org/opensuse-updates/2015-06/msg00020.html | vendor-advisoryx_refsource_SUSE | |
| http://www.debian.org/security/2013/dsa-2767 | vendor-advisoryx_refsource_DEBIAN | |
| http://www.openwall.com/lists/oss-security/2013/09/17/6 | mailing-listx_refsource_MLISTExploit |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner redhat
Published Sep 30, 2013
Updated Aug 6, 2024
Reserved Jun 12, 2013
Link CVE-2013-4359
CISA Vulnrichment
Updated n/a