Vulnerabilities > CVE-2007-6109 - Improper Restriction of Operations within the Bounds of a Memory Buffer vulnerability in GNU Emacs
Attack vector
UNKNOWN Attack complexity
UNKNOWN Privileges required
UNKNOWN Confidentiality impact
UNKNOWN Integrity impact
UNKNOWN Availability impact
UNKNOWN Summary
Stack-based buffer overflow in emacs allows user-assisted attackers to cause a denial of service (application crash) and possibly have unspecified other impact via a large precision value in an integer format string specifier to the format function, as demonstrated via a certain "emacs -batch -eval" command line.
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 Gentoo Local Security Checks NASL id GENTOO_GLSA-200712-03.NASL description The remote host is affected by the vulnerability described in GLSA-200712-03 (GNU Emacs: Multiple vulnerabilities) Drake Wilson reported that the hack-local-variables() function in GNU Emacs 22 does not properly match assignments of local variables in a file against a list of unsafe or risky variables, allowing to override them (CVE-2007-5795). Andreas Schwab (SUSE) discovered a stack-based buffer overflow in the format function when handling values with high precision (CVE-2007-6109). Impact : Remote attackers could entice a user to open a specially crafted file in GNU Emacs, possibly leading to the execution of arbitrary Emacs Lisp code (via CVE-2007-5795) or arbitrary code (via CVE-2007-6109) with the privileges of the user running GNU Emacs. Workaround : The first vulnerability can be worked around by setting the last seen 2020-06-01 modified 2020-06-02 plugin id 29290 published 2007-12-11 reporter This script is Copyright (C) 2007-2019 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/29290 title GLSA-200712-03 : GNU Emacs: Multiple vulnerabilities code #%NASL_MIN_LEVEL 80502 # # (C) Tenable Network Security, Inc. # # The descriptive text and package checks in this plugin were # extracted from Gentoo Linux Security Advisory GLSA 200712-03. # # The advisory text is Copyright (C) 2001-2015 Gentoo Foundation, Inc. # and licensed under the Creative Commons - Attribution / Share Alike # license. See http://creativecommons.org/licenses/by-sa/3.0/ # include("compat.inc"); if (description) { script_id(29290); script_version("1.14"); script_cvs_date("Date: 2019/08/02 13:32:44"); script_cve_id("CVE-2007-5795", "CVE-2007-6109"); script_xref(name:"GLSA", value:"200712-03"); script_name(english:"GLSA-200712-03 : GNU Emacs: Multiple vulnerabilities"); script_summary(english:"Checks for updated package(s) in /var/db/pkg"); script_set_attribute( attribute:"synopsis", value: "The remote Gentoo host is missing one or more security-related patches." ); script_set_attribute( attribute:"description", value: "The remote host is affected by the vulnerability described in GLSA-200712-03 (GNU Emacs: Multiple vulnerabilities) Drake Wilson reported that the hack-local-variables() function in GNU Emacs 22 does not properly match assignments of local variables in a file against a list of unsafe or risky variables, allowing to override them (CVE-2007-5795). Andreas Schwab (SUSE) discovered a stack-based buffer overflow in the format function when handling values with high precision (CVE-2007-6109). Impact : Remote attackers could entice a user to open a specially crafted file in GNU Emacs, possibly leading to the execution of arbitrary Emacs Lisp code (via CVE-2007-5795) or arbitrary code (via CVE-2007-6109) with the privileges of the user running GNU Emacs. Workaround : The first vulnerability can be worked around by setting the 'enable-local-variables' option to 'nil', disabling the processing of local variable lists. GNU Emacs prior to version 22 is not affected by this vulnerability. There is no known workaround for the second vulnerability at this time." ); script_set_attribute( attribute:"see_also", value:"https://security.gentoo.org/glsa/200712-03" ); script_set_attribute( attribute:"solution", value: "All GNU Emacs users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose '>=app-editors/emacs-22.1-r3'" ); script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C"); script_cwe_id(119); script_set_attribute(attribute:"plugin_type", value:"local"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:gentoo:linux:emacs"); script_set_attribute(attribute:"cpe", value:"cpe:/o:gentoo:linux"); script_set_attribute(attribute:"patch_publication_date", value:"2007/12/09"); script_set_attribute(attribute:"plugin_publication_date", value:"2007/12/11"); script_end_attributes(); script_category(ACT_GATHER_INFO); script_copyright(english:"This script is Copyright (C) 2007-2019 Tenable Network Security, Inc."); script_family(english:"Gentoo Local Security Checks"); script_dependencies("ssh_get_info.nasl"); script_require_keys("Host/local_checks_enabled", "Host/Gentoo/release", "Host/Gentoo/qpkg-list"); exit(0); } include("audit.inc"); include("global_settings.inc"); include("qpkg.inc"); if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED); if (!get_kb_item("Host/Gentoo/release")) audit(AUDIT_OS_NOT, "Gentoo"); if (!get_kb_item("Host/Gentoo/qpkg-list")) audit(AUDIT_PACKAGE_LIST_MISSING); flag = 0; if (qpkg_check(package:"app-editors/emacs", unaffected:make_list("ge 22.1-r3", "rge 21.4-r14", "lt 19"), vulnerable:make_list("lt 22.1-r3"))) flag++; if (flag) { if (report_verbosity > 0) security_hole(port:0, extra:qpkg_report_get()); else security_hole(0); exit(0); } else { tested = qpkg_tests_get(); if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested); else audit(AUDIT_PACKAGE_NOT_INSTALLED, "GNU Emacs"); }NASL family SuSE Local Security Checks NASL id SUSE_XEMACS-4944.NASL description This update fixes a buffer overflow in xemacs. (CVE-2007-6109) last seen 2020-06-01 modified 2020-06-02 plugin id 30096 published 2008-01-27 reporter This script is Copyright (C) 2008-2019 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/30096 title openSUSE 10 Security Update : xemacs (xemacs-4944) 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 xemacs-4944. # # The text description of this plugin is (C) SUSE LLC. # include("compat.inc"); if (description) { script_id(30096); script_version ("1.8"); script_cvs_date("Date: 2019/10/25 13:36:33"); script_cve_id("CVE-2007-6109"); script_name(english:"openSUSE 10 Security Update : xemacs (xemacs-4944)"); script_summary(english:"Check for the xemacs-4944 patch"); script_set_attribute( attribute:"synopsis", value:"The remote openSUSE host is missing a security update." ); script_set_attribute( attribute:"description", value:"This update fixes a buffer overflow in xemacs. (CVE-2007-6109)" ); script_set_attribute( attribute:"solution", value:"Update the affected xemacs packages." ); script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C"); script_cwe_id(119); script_set_attribute(attribute:"plugin_type", value:"local"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:xemacs"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:xemacs-el"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:xemacs-info"); script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:opensuse:10.3"); script_set_attribute(attribute:"patch_publication_date", value:"2008/01/24"); script_set_attribute(attribute:"plugin_publication_date", value:"2008/01/27"); script_end_attributes(); script_category(ACT_GATHER_INFO); script_copyright(english:"This script is Copyright (C) 2008-2019 Tenable Network Security, Inc."); 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 !~ "^(SUSE10\.3)$") audit(AUDIT_OS_RELEASE_NOT, "openSUSE", "10.3", release); if (!get_kb_item("Host/SuSE/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING); ourarch = get_kb_item("Host/cpu"); if (!ourarch) audit(AUDIT_UNKNOWN_ARCH); if (ourarch !~ "^(i586|i686|x86_64)$") audit(AUDIT_ARCH_NOT, "i586 / i686 / x86_64", ourarch); flag = 0; if ( rpm_check(release:"SUSE10.3", reference:"xemacs-21.5.28.20070807-24.2") ) flag++; if ( rpm_check(release:"SUSE10.3", reference:"xemacs-el-21.5.28.20070807-24.2") ) flag++; if ( rpm_check(release:"SUSE10.3", reference:"xemacs-info-21.5.28.20070807-24.2") ) flag++; if (flag) { if (report_verbosity > 0) security_hole(port:0, extra:rpm_report_get()); else security_hole(0); exit(0); } else { tested = pkg_tests_get(); if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested); else audit(AUDIT_PACKAGE_NOT_INSTALLED, "xemacs"); }NASL family MacOS X Local Security Checks NASL id MACOSX_SECUPD2008-002.NASL description The remote host is running a version of Mac OS X 10.5 or 10.4 that does not have the security update 2008-002 applied. This update contains several security fixes for a number of programs. last seen 2020-06-01 modified 2020-06-02 plugin id 31605 published 2008-03-19 reporter This script is Copyright (C) 2008-2018 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/31605 title Mac OS X Multiple Vulnerabilities (Security Update 2008-002) code # # (C) Tenable Network Security, Inc. # if (!defined_func("bn_random")) exit(0); if (NASL_LEVEL < 3004) exit(0); include("compat.inc"); if (description) { script_id(31605); script_version ("1.38"); script_cvs_date("Date: 2018/07/14 1:59:35"); script_cve_id("CVE-2005-3352", "CVE-2005-4077", "CVE-2006-3334", "CVE-2006-3747", "CVE-2006-5793", "CVE-2006-6481", "CVE-2007-0897", "CVE-2007-0898", "CVE-2007-1659", "CVE-2007-1660", "CVE-2007-1661", "CVE-2007-1662", "CVE-2007-1745", "CVE-2007-1997", "CVE-2007-2445", "CVE-2007-2799", "CVE-2007-3378", "CVE-2007-3725", "CVE-2007-3799", "CVE-2007-3847", "CVE-2007-4510", "CVE-2007-4560", "CVE-2007-4568", "CVE-2007-4752", "CVE-2007-4766", "CVE-2007-4767", "CVE-2007-4768", "CVE-2007-4887", "CVE-2007-4990", "CVE-2007-5000", "CVE-2007-5266", "CVE-2007-5267", "CVE-2007-5268", "CVE-2007-5269", "CVE-2007-5795", "CVE-2007-5901", "CVE-2007-5958", "CVE-2007-5971", "CVE-2007-6109", "CVE-2007-6203", "CVE-2007-6335", "CVE-2007-6336", "CVE-2007-6337", "CVE-2007-6388", "CVE-2007-6421", "CVE-2007-6427", "CVE-2007-6428", "CVE-2007-6429", "CVE-2008-0005", "CVE-2008-0006", "CVE-2008-0044", "CVE-2008-0045", "CVE-2008-0046", "CVE-2008-0047", "CVE-2008-0048", "CVE-2008-0049", "CVE-2008-0050", "CVE-2008-0051", "CVE-2008-0052", "CVE-2008-0053", "CVE-2008-0054", "CVE-2008-0055", "CVE-2008-0056", "CVE-2008-0057", "CVE-2008-0058", "CVE-2008-0059", "CVE-2008-0060", "CVE-2008-0062", "CVE-2008-0063", "CVE-2008-0318", "CVE-2008-0596", "CVE-2008-0728", "CVE-2008-0882", "CVE-2008-0987", "CVE-2008-0988", "CVE-2008-0989", "CVE-2008-0990", "CVE-2008-0992", "CVE-2008-0993", "CVE-2008-0994", "CVE-2008-0995", "CVE-2008-0996", "CVE-2008-0997", "CVE-2008-0998", "CVE-2008-0999", "CVE-2008-1000"); script_bugtraq_id(19204, 21078, 24268, 25398, 25439, 25489, 25498, 26346, 26750, 26838, 26927, 26946, 27234, 27236, 27751, 27988, 28278, 28303, 28304, 28307, 28320, 28323, 28334, 28339, 28340, 28341, 28343, 28344, 28345, 28357, 28358, 28359, 28363, 28364, 28365, 28367, 28368, 28371, 28371, 28372, 28374, 28375, 28384, 28385, 28386, 28387, 28388, 28389); script_name(english:"Mac OS X Multiple Vulnerabilities (Security Update 2008-002)"); script_summary(english:"Check for the presence of Security Update 2008-002"); script_set_attribute(attribute:"synopsis", value: "The remote host is missing a Mac OS X update that fixes various security issues." ); script_set_attribute(attribute:"description", value: "The remote host is running a version of Mac OS X 10.5 or 10.4 that does not have the security update 2008-002 applied. 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If a user were tricked into opening a specially crafted file, an attacker could cause a denial of service or possibly other unspecified actions. This issue does not affect Ubuntu 8.04. (CVE-2007-6109) Steve Grubb discovered that the vcdiff script as included in Emacs created temporary files in an insecure way when used with SCCS. Local users could exploit a race condition to create or overwrite files with the privileges of the user invoking the program. (CVE-2008-1694). Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues. last seen 2020-06-01 modified 2020-06-02 plugin id 32187 published 2008-05-09 reporter Ubuntu Security Notice (C) 2008-2019 Canonical, Inc. / NASL script (C) 2018 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/32187 title Ubuntu 6.06 LTS / 7.04 / 7.10 / 8.04 LTS : emacs21, emacs22 vulnerabilities (USN-607-1)
Statements
| contributor | Mark J Cox |
| lastmodified | 2007-12-11 |
| organization | Red Hat |
| statement | Red Hat does not consider this issue to be a security vulnerability since no trust boundary is crossed. The user must voluntarily interact with the attack mechanism to exploit this flaw, with the result being the ability to run code as themselves. |
References
- http://bugs.gentoo.org/show_bug.cgi?id=200297
- http://bugs.gentoo.org/show_bug.cgi?id=200297
- http://docs.info.apple.com/article.html?artnum=307562
- http://docs.info.apple.com/article.html?artnum=307562
- http://lists.apple.com/archives/security-announce/2008/Mar/msg00001.html
- http://lists.apple.com/archives/security-announce/2008/Mar/msg00001.html
- http://lists.opensuse.org/opensuse-security-announce/2008-02/msg00003.html
- http://lists.opensuse.org/opensuse-security-announce/2008-02/msg00003.html
- http://secunia.com/advisories/27965
- http://secunia.com/advisories/27965
- http://secunia.com/advisories/27984
- http://secunia.com/advisories/27984
- http://secunia.com/advisories/28838
- http://secunia.com/advisories/28838
- http://secunia.com/advisories/29420
- http://secunia.com/advisories/29420
- http://secunia.com/advisories/30109
- http://secunia.com/advisories/30109
- http://security.gentoo.org/glsa/glsa-200712-03.xml
- http://security.gentoo.org/glsa/glsa-200712-03.xml
- http://www.mandriva.com/security/advisories?name=MDVSA-2008:034
- http://www.mandriva.com/security/advisories?name=MDVSA-2008:034
- http://www.novell.com/linux/security/advisories/2007_25_sr.html
- http://www.novell.com/linux/security/advisories/2007_25_sr.html
- http://www.vupen.com/english/advisories/2008/0924/references
- http://www.vupen.com/english/advisories/2008/0924/references
- https://exchange.xforce.ibmcloud.com/vulnerabilities/38904
- https://exchange.xforce.ibmcloud.com/vulnerabilities/38904
- https://usn.ubuntu.com/607-1/
- https://usn.ubuntu.com/607-1/