Vulnerabilities > CVE-2012-3570 - Improper Restriction of Operations Within the Bounds of A Memory Buffer vulnerability in ISC Dhcp
Attack vector
ADJACENT_NETWORK Attack complexity
MEDIUM Privileges required
NONE Confidentiality impact
NONE Integrity impact
NONE Availability impact
COMPLETE Summary
Buffer overflow in ISC DHCP 4.2.x before 4.2.4-P1, when DHCPv6 mode is enabled, allows remote attackers to cause a denial of service (segmentation fault and daemon exit) via a crafted client identifier parameter.
Vulnerable Configurations
| Part | Description | Count |
|---|---|---|
| Application | 17 |
Common Weakness Enumeration (CWE)
Common Attack Pattern Enumeration and Classification (CAPEC)
- Buffer Overflow via Environment Variables This attack pattern involves causing a buffer overflow through manipulation of environment variables. Once the attacker finds that they can modify an environment variable, they may try to overflow associated buffers. This attack leverages implicit trust often placed in environment variables.
- Overflow Buffers Buffer Overflow attacks target improper or missing bounds checking on buffer operations, typically triggered by input injected by an attacker. As a consequence, an attacker is able to write past the boundaries of allocated buffer regions in memory, causing a program crash or potentially redirection of execution as per the attackers' choice.
- Client-side Injection-induced Buffer Overflow This type of attack exploits a buffer overflow vulnerability in targeted client software through injection of malicious content from a custom-built hostile service.
- Filter Failure through Buffer Overflow In this attack, the idea is to cause an active filter to fail by causing an oversized transaction. An attacker may try to feed overly long input strings to the program in an attempt to overwhelm the filter (by causing a buffer overflow) and hoping that the filter does not fail securely (i.e. the user input is let into the system unfiltered).
- MIME Conversion An attacker exploits a weakness in the MIME conversion routine to cause a buffer overflow and gain control over the mail server machine. The MIME system is designed to allow various different information formats to be interpreted and sent via e-mail. Attack points exist when data are converted to MIME compatible format and back.
Nessus
NASL family SuSE Local Security Checks NASL id OPENSUSE-2012-522.NASL description This update of dhcp fixed multiple security vulnerabilities (memory leak, Denial of Service). last seen 2020-06-05 modified 2014-06-13 plugin id 74718 published 2014-06-13 reporter This script is Copyright (C) 2014-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/74718 title openSUSE Security Update : dhcp (openSUSE-SU-2012:1006-1) code #%NASL_MIN_LEVEL 80502 # # (C) Tenable Network Security, Inc. # # The descriptive text and package checks in this plugin were # extracted from openSUSE Security Update openSUSE-2012-522. # # The text description of this plugin is (C) SUSE LLC. # include("compat.inc"); if (description) { script_id(74718); script_version("1.6"); script_set_attribute(attribute:"plugin_modification_date", value:"2020/06/04"); script_cve_id("CVE-2012-3570", "CVE-2012-3571", "CVE-2012-3954"); script_name(english:"openSUSE Security Update : dhcp (openSUSE-SU-2012:1006-1)"); script_summary(english:"Check for the openSUSE-2012-522 patch"); script_set_attribute( attribute:"synopsis", value:"The remote openSUSE host is missing a security update." ); script_set_attribute( attribute:"description", value: "This update of dhcp fixed multiple security vulnerabilities (memory leak, Denial of Service)." ); script_set_attribute( attribute:"see_also", value:"https://bugzilla.novell.com/show_bug.cgi?id=721829" ); script_set_attribute( attribute:"see_also", value:"https://bugzilla.novell.com/show_bug.cgi?id=739696" ); script_set_attribute( attribute:"see_also", value:"https://bugzilla.novell.com/show_bug.cgi?id=762108" ); script_set_attribute( attribute:"see_also", value:"https://bugzilla.novell.com/show_bug.cgi?id=767661" ); script_set_attribute( attribute:"see_also", value:"https://bugzilla.novell.com/show_bug.cgi?id=770236" ); script_set_attribute( attribute:"see_also", value:"https://bugzilla.novell.com/show_bug.cgi?id=772924" ); script_set_attribute( attribute:"see_also", value:"https://lists.opensuse.org/opensuse-updates/2012-08/msg00030.html" ); script_set_attribute(attribute:"solution", value:"Update the affected dhcp packages."); script_set_cvss_base_vector("CVSS2#AV:A/AC:L/Au:N/C:N/I:N/A:C"); script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C"); script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available"); script_set_attribute(attribute:"exploit_available", value:"true"); script_set_attribute(attribute:"plugin_type", value:"local"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:dhcp"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:dhcp-client"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:dhcp-client-debuginfo"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:dhcp-debuginfo"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:dhcp-debugsource"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:dhcp-devel"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:dhcp-relay"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:dhcp-relay-debuginfo"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:dhcp-server"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:dhcp-server-debuginfo"); script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:opensuse:12.1"); script_set_attribute(attribute:"vuln_publication_date", value:"2012/07/25"); script_set_attribute(attribute:"patch_publication_date", value:"2012/08/09"); script_set_attribute(attribute:"plugin_publication_date", value:"2014/06/13"); script_set_attribute(attribute:"generated_plugin", value:"current"); script_end_attributes(); script_category(ACT_GATHER_INFO); script_copyright(english:"This script is Copyright (C) 2014-2020 and is owned by Tenable, Inc. or an Affiliate thereof."); script_family(english:"SuSE Local Security Checks"); script_dependencies("ssh_get_info.nasl"); script_require_keys("Host/local_checks_enabled", "Host/SuSE/release", "Host/SuSE/rpm-list", "Host/cpu"); exit(0); } include("audit.inc"); include("global_settings.inc"); include("rpm.inc"); if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED); release = get_kb_item("Host/SuSE/release"); if (isnull(release) || release =~ "^(SLED|SLES)") audit(AUDIT_OS_NOT, "openSUSE"); if (release !~ "^(SUSE12\.1)$") audit(AUDIT_OS_RELEASE_NOT, "openSUSE", "12.1", release); if (!get_kb_item("Host/SuSE/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING); ourarch = get_kb_item("Host/cpu"); if (!ourarch) audit(AUDIT_UNKNOWN_ARCH); if (ourarch !~ "^(i586|i686|x86_64)$") audit(AUDIT_ARCH_NOT, "i586 / i686 / x86_64", ourarch); flag = 0; if ( rpm_check(release:"SUSE12.1", reference:"dhcp-4.2.4.P1-0.6.10.1") ) flag++; if ( rpm_check(release:"SUSE12.1", reference:"dhcp-client-4.2.4.P1-0.6.10.1") ) flag++; if ( rpm_check(release:"SUSE12.1", reference:"dhcp-client-debuginfo-4.2.4.P1-0.6.10.1") ) flag++; if ( rpm_check(release:"SUSE12.1", reference:"dhcp-debuginfo-4.2.4.P1-0.6.10.1") ) flag++; if ( rpm_check(release:"SUSE12.1", reference:"dhcp-debugsource-4.2.4.P1-0.6.10.1") ) flag++; if ( rpm_check(release:"SUSE12.1", reference:"dhcp-devel-4.2.4.P1-0.6.10.1") ) flag++; if ( rpm_check(release:"SUSE12.1", reference:"dhcp-relay-4.2.4.P1-0.6.10.1") ) flag++; if ( rpm_check(release:"SUSE12.1", reference:"dhcp-relay-debuginfo-4.2.4.P1-0.6.10.1") ) flag++; if ( rpm_check(release:"SUSE12.1", reference:"dhcp-server-4.2.4.P1-0.6.10.1") ) flag++; if ( rpm_check(release:"SUSE12.1", reference:"dhcp-server-debuginfo-4.2.4.P1-0.6.10.1") ) flag++; if (flag) { if (report_verbosity > 0) security_warning(port:0, extra:rpm_report_get()); else security_warning(0); exit(0); } else { tested = pkg_tests_get(); if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested); else audit(AUDIT_PACKAGE_NOT_INSTALLED, "dhcp / dhcp-client / dhcp-client-debuginfo / dhcp-debuginfo / etc"); }NASL family Fedora Local Security Checks NASL id FEDORA_2012-11110.NASL description This is security bugfix release fixing several vulnerabilities. Note that Tenable Network Security has extracted the preceding description block directly from the Fedora security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues. last seen 2020-03-17 modified 2012-08-07 plugin id 61442 published 2012-08-07 reporter This script is Copyright (C) 2012-2020 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/61442 title Fedora 16 : dhcp-4.2.3-11.P2.fc16 (2012-11110) NASL family Gentoo Local Security Checks NASL id GENTOO_GLSA-201301-06.NASL description The remote host is affected by the vulnerability described in GLSA-201301-06 (ISC DHCP: Denial of Service) Multiple vulnerabilities have been discovered in ISC DHCP. Please review the CVE identifiers referenced below for details. Impact : The vulnerabilities might allow remote attackers to execute arbitrary code or cause a Denial of Service. Workaround : There is no known workaround at this time. last seen 2020-06-01 modified 2020-06-02 plugin id 63440 published 2013-01-09 reporter This script is Copyright (C) 2013-2018 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/63440 title GLSA-201301-06 : ISC DHCP: Denial of Service NASL family Mandriva Local Security Checks NASL id MANDRIVA_MDVSA-2012-115.NASL description Multiple vulnerabilities has been discovered and corrected in ISC DHCP : An unexpected client identifier parameter can cause the ISC DHCP daemon to segmentation fault when running in DHCPv6 mode, resulting in a denial of service to further client requests. In order to exploit this condition, an attacker must be able to send requests to the DHCP server (CVE-2012-3570). An error in the handling of malformed client identifiers can cause a DHCP server running affected versions (see Impact) to enter a state where further client requests are not processed and the server process loops endlessly, consuming all available CPU cycles. Under normal circumstances this condition should not be triggered, but a non-conforming or malicious client could deliberately trigger it in a vulnerable server. In order to exploit this condition an attacker must be able to send requests to the DHCP server (CVE-2012-3571). Two memory leaks have been found and fixed in ISC DHCP. Both are reproducible when running in DHCPv6 mode (with the -6 command-line argument.) The first leak is confirmed to only affect servers operating in DHCPv6 mode, but based on initial code analysis the second may theoretically affect DHCPv4 servers (though this has not been demonstrated.) (CVE-2012-3954). The updated packages have been upgraded to the latest version (4.2.4-P1) which is not affected by these issues. last seen 2020-06-01 modified 2020-06-02 plugin id 61967 published 2012-09-06 reporter This script is Copyright (C) 2012-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/61967 title Mandriva Linux Security Advisory : dhcp (MDVSA-2012:115) NASL family Fedora Local Security Checks NASL id FEDORA_2012-11079.NASL description This is security bugfix release fixing several vulnerabilities. Note that Tenable Network Security has extracted the preceding description block directly from the Fedora security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues. last seen 2020-03-17 modified 2012-08-02 plugin id 61387 published 2012-08-02 reporter This script is Copyright (C) 2012-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/61387 title Fedora 17 : dhcp-4.2.4-9.P1.fc17 (2012-11079) NASL family SuSE Local Security Checks NASL id SUSE_11_DHCP-120730.NASL description This update provides dhcp 4.2.4-p1, which fixes the dhcpv6 server crashing while accessing the lease on heap and provides the following additional fixes : - Security fixes : - Previously the server code was relaxed to allow packets with zero length client ids to be processed. Under some situations use of zero length client ids can cause the server to go into an infinite loop. As such ids are not valid according to RFC 2132 section 9.14 the server no longer accepts them. Client ids with a length of 1 are also invalid but the server still accepts them in order to minimize disruption. The restriction will likely be tightened in the future to disallow ids with a length of 1. (ISC-Bugs #29851, CVE-2012-3571) - When attempting to convert a DUID from a client id option into a hardware address handle unexpected client ids properly. (ISC-Bugs #29852, CVE-2012-3570) - A pair of memory leaks were found and fixed. (ISC-Bugs #30024, (CVE-2012-3954) ) - Further upstream fixes : - Moved lease file check to a separate action so it is not used in restart -- it can fail when the daemon rewrites the lease causing a restart failure then. - Request dhcp6.sntp-servers in /etc/dhclient6.conf and forward to netconfig for processing. - Rotate the lease file when running in v6 mode. (ISC-Bugs #24887) - Fixed the code that checks if an address the server is planning to hand out is in a reserved range. This would appear as the server being out of addresses in pools with particular ranges. (ISC-Bugs #26498) - In the DDNS code handle error conditions more gracefully and add more logging code. The major change is to handle unexpected cancel events from the DNS client code. (ISC-Bugs #26287) - Tidy up the receive calls and eliminate the need for found_pkt. (ISC-Bugs #25066) - Add support for Infiniband over sockets to the server and relay code. - Modify the code that determines if an outstanding DDNS request should be cancelled. This patch results in cancelling the outstanding request less often. It fixes the problem caused by a client doing a release where the TXT and PTR records weren last seen 2020-06-05 modified 2013-01-25 plugin id 64122 published 2013-01-25 reporter This script is Copyright (C) 2013-2020 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/64122 title SuSE 11.2 Security Update : dhcp (SAT Patch Number 6606) NASL family FreeBSD Local Security Checks NASL id FREEBSD_PKG_C7FA3618D5FF11E190A2000C299B62E1.NASL description ISC reports : An unexpected client identifier parameter can cause the ISC DHCP daemon to segmentation fault when running in DHCPv6 mode, resulting in a denial of service to further client requests. In order to exploit this condition, an attacker must be able to send requests to the DHCP server. An error in the handling of malformed client identifiers can cause a DHCP server running affected versions (see last seen 2020-06-01 modified 2020-06-02 plugin id 60115 published 2012-07-25 reporter This script is Copyright (C) 2012-2018 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/60115 title FreeBSD : isc-dhcp -- multiple vulnerabilities (c7fa3618-d5ff-11e1-90a2-000c299b62e1)