Vulnerabilities > CVE-2013-1794 - Improper Restriction of Operations Within the Bounds of A Memory Buffer vulnerability in Openafs
Attack vector
NETWORK Attack complexity
LOW Privileges required
SINGLE Confidentiality impact
PARTIAL Integrity impact
PARTIAL Availability impact
PARTIAL Summary
Buffer overflow in certain client utilities in OpenAFS before 1.6.2 allows remote authenticated users to cause a denial of service (crash) and possibly execute arbitrary code via a long fileserver ACL entry.
Vulnerable Configurations
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 FreeBSD Local Security Checks NASL id FREEBSD_PKG_0BF376B7CC6B11E2A42414DAE938EC40.NASL description Nickolai Zeldovich reports : An attacker with the ability to manipulate AFS directory ACLs may crash the fileserver hosting that volume. In addition, once a corrupt ACL is placed on a fileserver, its existence may crash client utilities manipulating ACLs on that server. last seen 2020-06-01 modified 2020-06-02 plugin id 66769 published 2013-06-03 reporter This script is Copyright (C) 2013-2018 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/66769 title FreeBSD : net/openafs -- buffer overflow (0bf376b7-cc6b-11e2-a424-14dae938ec40) code # # (C) Tenable Network Security, Inc. # # The descriptive text and package checks in this plugin were # extracted from the FreeBSD VuXML database : # # Copyright 2003-2018 Jacques Vidrine and contributors # # Redistribution and use in source (VuXML) and 'compiled' forms (SGML, # HTML, PDF, PostScript, RTF and so forth) with or without modification, # are permitted provided that the following conditions are met: # 1. Redistributions of source code (VuXML) must retain the above # copyright notice, this list of conditions and the following # disclaimer as the first lines of this file unmodified. # 2. Redistributions in compiled form (transformed to other DTDs, # published online in any format, converted to PDF, PostScript, # RTF and other formats) must reproduce the above copyright # notice, this list of conditions and the following disclaimer # in the documentation and/or other materials provided with the # distribution. # # THIS DOCUMENTATION IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS "AS IS" # AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, # THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR # PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS # BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, # OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT # OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR # BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, # WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE # OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS DOCUMENTATION, # EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. # include("compat.inc"); if (description) { script_id(66769); script_version("1.6"); script_cvs_date("Date: 2018/11/10 11:49:43"); script_cve_id("CVE-2013-1794"); script_name(english:"FreeBSD : net/openafs -- buffer overflow (0bf376b7-cc6b-11e2-a424-14dae938ec40)"); script_summary(english:"Checks for updated package in pkg_info output"); script_set_attribute( attribute:"synopsis", value:"The remote FreeBSD host is missing a security-related update." ); script_set_attribute( attribute:"description", value: "Nickolai Zeldovich reports : An attacker with the ability to manipulate AFS directory ACLs may crash the fileserver hosting that volume. In addition, once a corrupt ACL is placed on a fileserver, its existence may crash client utilities manipulating ACLs on that server." ); script_set_attribute( attribute:"see_also", value:"http://www.openafs.org/pages/security/OPENAFS-SA-2013-001.txt" ); # https://vuxml.freebsd.org/freebsd/0bf376b7-cc6b-11e2-a424-14dae938ec40.html script_set_attribute( attribute:"see_also", value:"http://www.nessus.org/u?b7640803" ); script_set_attribute(attribute:"solution", value:"Update the affected package."); script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:P/I:P/A:P"); script_set_attribute(attribute:"plugin_type", value:"local"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:freebsd:freebsd:openafs"); script_set_attribute(attribute:"cpe", value:"cpe:/o:freebsd:freebsd"); script_set_attribute(attribute:"vuln_publication_date", value:"2013/02/27"); script_set_attribute(attribute:"patch_publication_date", value:"2013/06/03"); script_set_attribute(attribute:"plugin_publication_date", value:"2013/06/03"); script_end_attributes(); script_category(ACT_GATHER_INFO); script_copyright(english:"This script is Copyright (C) 2013-2018 and is owned by Tenable, Inc. or an Affiliate thereof."); script_family(english:"FreeBSD Local Security Checks"); script_dependencies("ssh_get_info.nasl"); script_require_keys("Host/local_checks_enabled", "Host/FreeBSD/release", "Host/FreeBSD/pkg_info"); exit(0); } include("audit.inc"); include("freebsd_package.inc"); if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED); if (!get_kb_item("Host/FreeBSD/release")) audit(AUDIT_OS_NOT, "FreeBSD"); if (!get_kb_item("Host/FreeBSD/pkg_info")) audit(AUDIT_PACKAGE_LIST_MISSING); flag = 0; if (pkg_test(save_report:TRUE, pkg:"openafs<1.6.2.*")) flag++; if (flag) { if (report_verbosity > 0) security_warning(port:0, extra:pkg_report_get()); else security_warning(0); exit(0); } else audit(AUDIT_HOST_NOT, "affected");
NASL family Gentoo Local Security Checks NASL id GENTOO_GLSA-201404-05.NASL description The remote host is affected by the vulnerability described in GLSA-201404-05 (OpenAFS: Multiple vulnerabilities) Multiple vulnerabilities have been discovered in OpenAFS. Please review the CVE identifiers referenced below for details. Impact : An attacker could potentially execute arbitrary code with the permissions of the user running the AFS server, cause a Denial of Service condition, or gain access to sensitive information. Additionally, an attacker could compromise a cell’s private key, allowing them to impersonate any user in the cell. Workaround : There is no known workaround at this time. last seen 2020-06-01 modified 2020-06-02 plugin id 73394 published 2014-04-08 reporter This script is Copyright (C) 2014-2018 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/73394 title GLSA-201404-05 : OpenAFS: Multiple vulnerabilities code # # (C) Tenable Network Security, Inc. # # The descriptive text and package checks in this plugin were # extracted from Gentoo Linux Security Advisory GLSA 201404-05. # # The advisory text is Copyright (C) 2001-2016 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(73394); script_version("1.6"); script_cvs_date("Date: 2018/07/12 19:01:15"); script_cve_id("CVE-2009-1250", "CVE-2009-1251", "CVE-2011-0430", "CVE-2011-0431", "CVE-2013-1794", "CVE-2013-1795", "CVE-2013-4134", "CVE-2013-4135"); script_bugtraq_id(34404, 34407, 46428, 58299, 58300, 61438, 61439); script_xref(name:"GLSA", value:"201404-05"); script_name(english:"GLSA-201404-05 : OpenAFS: 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-201404-05 (OpenAFS: Multiple vulnerabilities) Multiple vulnerabilities have been discovered in OpenAFS. Please review the CVE identifiers referenced below for details. Impact : An attacker could potentially execute arbitrary code with the permissions of the user running the AFS server, cause a Denial of Service condition, or gain access to sensitive information. Additionally, an attacker could compromise a cell’s private key, allowing them to impersonate any user in the cell. Workaround : There is no known workaround at this time." ); script_set_attribute( attribute:"see_also", value:"https://security.gentoo.org/glsa/201404-05" ); script_set_attribute( attribute:"solution", value: "All OpenAFS users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose '>=net-fs/openafs-1.6.5'" ); script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C"); script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C"); script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available"); script_set_attribute(attribute:"exploit_available", value:"false"); script_cwe_id(119, 189); script_set_attribute(attribute:"plugin_type", value:"local"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:gentoo:linux:openafs"); script_set_attribute(attribute:"cpe", value:"cpe:/o:gentoo:linux"); script_set_attribute(attribute:"patch_publication_date", value:"2014/04/07"); script_set_attribute(attribute:"plugin_publication_date", value:"2014/04/08"); script_end_attributes(); script_category(ACT_GATHER_INFO); script_copyright(english:"This script is Copyright (C) 2014-2018 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:"net-fs/openafs", unaffected:make_list("ge 1.6.5"), vulnerable:make_list("lt 1.6.5"))) 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, "OpenAFS"); }
NASL family Mandriva Local Security Checks NASL id MANDRIVA_MDVSA-2014-244.NASL description Multiple vulnerabilities has been found and corrected in openafs : Buffer overflow in certain client utilities in OpenAFS before 1.6.2 allows remote authenticated users to cause a denial of service (crash) and possibly execute arbitrary code via a long fileserver ACL entry (CVE-2013-1794). Integer overflow in ptserver in OpenAFS before 1.6.2 allows remote attackers to cause a denial of service (crash) via a large list from the IdToName RPC, which triggers a heap-based buffer overflow (CVE-2013-1795). OpenAFS before 1.4.15, 1.6.x before 1.6.5, and 1.7.x before 1.7.26 uses weak encryption (DES) for Kerberos keys, which makes it easier for remote attackers to obtain the service key (CVE-2013-4134). The vos command in OpenAFS 1.6.x before 1.6.5, when using the -encrypt option, only enables integrity protection and sends data in cleartext, which allows remote attackers to obtain sensitive information by sniffing the network (CVE-2013-4135). Buffer overflow in the GetStatistics64 remote procedure call (RPC) in OpenAFS 1.4.8 before 1.6.7 allows remote attackers to cause a denial of service (crash) via a crafted statsVersion argument (CVE-2014-0159). A denial of service flaw was found in libxml2, a library providing support to read, modify and write XML and HTML files. A remote attacker could provide a specially crafted XML file that, when processed by an application using libxml2, would lead to excessive CPU consumption (denial of service) based on excessive entity substitutions, even if entity substitution was disabled, which is the parser default behavior (CVE-2014-3660). The updated packages have been upgraded to the 1.4.15 version and patched to correct these issues. last seen 2020-06-01 modified 2020-06-02 plugin id 79989 published 2014-12-15 reporter This script is Copyright (C) 2014-2019 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/79989 title Mandriva Linux Security Advisory : openafs (MDVSA-2014:244) NASL family Scientific Linux Local Security Checks NASL id SL_20130304_OPENAFS_ON_SL5_X.NASL description By carefully crafting an ACL entry an attacker may overflow fixed length buffers within the OpenAFS fileserver, crashing the fileserver, and potentially permitting the execution of arbitrary code. To perform the exploit, the attacker must already have permissions to create ACLs on the fileserver in question. Once such an ACL is present on a fileserver, client utilities such as last seen 2020-03-18 modified 2013-03-05 plugin id 65021 published 2013-03-05 reporter This script is Copyright (C) 2013-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/65021 title Scientific Linux Security Update : openafs on SL5.x SL6.x i386/x86_64 (20130304) NASL family Debian Local Security Checks NASL id DEBIAN_DSA-2638.NASL description Multiple buffer overflows were discovered in OpenAFS, the implementation of the distributed filesystem AFS, which might result in denial of service or the execution of arbitrary code. Further information is available at http://www.openafs.org/security. last seen 2020-03-17 modified 2013-03-05 plugin id 64996 published 2013-03-05 reporter This script is Copyright (C) 2013-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/64996 title Debian DSA-2638-1 : openafs - buffer overflow
References
- http://secunia.com/advisories/52342
- http://secunia.com/advisories/52480
- http://www.debian.org/security/2013/dsa-2638
- http://www.mandriva.com/security/advisories?name=MDVSA-2014:244
- http://www.openafs.org/pages/security/OPENAFS-SA-2013-001.txt
- http://www.securityfocus.com/bid/58299
- https://exchange.xforce.ibmcloud.com/vulnerabilities/82582