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Vulnerability record · CVE-2010-3843 · published 28 May 2021

CVE-2010-3843: Ettercap-project ettercap out-of-bounds write vulnerability

Ettercap Project · Ettercap

The GTK version of ettercap uses a global settings file at /tmp/.ettercap_gtk and does not verify ownership of this file. When parsing this file for settings in gtkui_conf_read() (src/interfacesgtk/ec_gtk_conf.c), an unchecked sscanf() call allows a maliciously placed settings file to overflow a statically-sized buffer on the stack.

7.8 CVSS 3.1 High EPSS 0.31% · top 78.3% CWE-787 · Out-of-bounds write
7.8CVSS 3.1 base score, v2 4.6
0.31%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
6References
16 Jun 2026Last modified by NVD

Description

The GTK version of ettercap uses a global settings file at /tmp/.ettercap_gtk and does not verify ownership of this file. When parsing this file for settings in gtkui_conf_read() (src/interfacesgtk/ec_gtk_conf.c), an unchecked sscanf() call allows a maliciously placed settings file to overflow a statically-sized buffer on the stack.

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://article.gmane.org/gmane.comp.security.oss.general/3660
https://bugs.launchpad.net/ubuntu/+source/ettercap/+bug/656347 PatchThird Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=643453 Issue TrackingThird Party Advisory
http://article.gmane.org/gmane.comp.security.oss.general/3660
https://bugs.launchpad.net/ubuntu/+source/ettercap/+bug/656347 PatchThird Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=643453 Issue TrackingThird Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

8.8CVE-2010-3844Ettercap-project ettercap classic buffer overflow vulnerabilityAn unchecked sscanf() call in ettercap before 0.7.5 allows an insecure temporary settings file to overflow a static-sized buffer on the stack.EPSS 1.4%7.5CVE-2014-9379Ettercap-project ettercap memory buffer overflow vulnerabilityThe radius_get_attribute function in dissectors/ec_radius.c in Ettercap 0.8.1 performs an incorrect cast, which allows remote attackers to cause a de…EPSS 4.0%7.5CVE-2014-9378Ettercap-project ettercap improper input validation vulnerabilityEttercap 0.8.1 does not validate certain return values, which allows remote attackers to cause a denial of service (crash) or possibly execute arbitr…EPSS 3.9%7.5CVE-2014-9376Ettercap-project ettercap vulnerabilityInteger underflow in Ettercap 0.8.1 allows remote attackers to cause a denial of service (out-of-bounds write) and possibly execute arbitrary code vi…EPSS 4.1%7.5CVE-2014-9377Ettercap-project ettercap memory buffer overflow vulnerabilityHeap-based buffer overflow in the nbns_spoof function in plug-ins/nbns_spoof/nbns_spoof.c in Ettercap 0.8.1 allows remote attackers to cause a denial…EPSS 4.0%7.5CVE-2014-6396Ettercap-project ettercap memory buffer overflow vulnerabilityThe dissector_postgresql function in dissectors/ec_postgresql.c in Ettercap before 0.8.1 allows remote attackers to cause a denial of service and pos…EPSS 3.6%7.5CVE-2014-6395Ettercap-project ettercap memory buffer overflow vulnerabilityHeap-based buffer overflow in the dissector_postgresql function in dissectors/ec_postgresql.c in Ettercap before 0.8.1 allows remote attackers to cau…EPSS 13%5.5CVE-2017-6430Ettercap-project ettercap out-of-bounds read vulnerabilityThe compile_tree function in ef_compiler.c in the Etterfilter utility in Ettercap 0.8.2 and earlier allows remote attackers to cause a denial of serv…EPSS 2.0%

Source: NIST National Vulnerability Database (record CVE-2010-3843), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.