Vulnerabilities > CVE-2010-1322 - Improper Input Validation vulnerability in MIT Kerberos 5
Attack vector
UNKNOWN Attack complexity
UNKNOWN Privileges required
UNKNOWN Confidentiality impact
UNKNOWN Integrity impact
UNKNOWN Availability impact
UNKNOWN Summary
The merge_authdata function in kdc_authdata.c in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) 1.8.x before 1.8.4 does not properly manage an index into an authorization-data list, which allows remote attackers to cause a denial of service (daemon crash), or possibly obtain sensitive information, spoof authorization, or execute arbitrary code, via a TGS request that triggers an uninitialized pointer dereference, as demonstrated by a request from a Windows Active Directory client.
Vulnerable Configurations
| Part | Description | Count |
|---|---|---|
| Application | 4 |
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.
- Server Side Include (SSI) Injection An attacker can use Server Side Include (SSI) Injection to send code to a web application that then gets executed by the web server. Doing so enables the attacker to achieve similar results to Cross Site Scripting, viz., arbitrary code execution and information disclosure, albeit on a more limited scale, since the SSI directives are nowhere near as powerful as a full-fledged scripting language. Nonetheless, the attacker can conveniently gain access to sensitive files, such as password files, and execute shell commands.
- Cross Zone Scripting An attacker is able to cause a victim to load content into their web-browser that bypasses security zone controls and gain access to increased privileges to execute scripting code or other web objects such as unsigned ActiveX controls or applets. This is a privilege elevation attack targeted at zone-based web-browser security. In a zone-based model, pages belong to one of a set of zones corresponding to the level of privilege assigned to that page. Pages in an untrusted zone would have a lesser level of access to the system and/or be restricted in the types of executable content it was allowed to invoke. In a cross-zone scripting attack, a page that should be assigned to a less privileged zone is granted the privileges of a more trusted zone. This can be accomplished by exploiting bugs in the browser, exploiting incorrect configuration in the zone controls, through a cross-site scripting attack that causes the attackers' content to be treated as coming from a more trusted page, or by leveraging some piece of system functionality that is accessible from both the trusted and less trusted zone. This attack differs from "Restful Privilege Escalation" in that the latter correlates to the inadequate securing of RESTful access methods (such as HTTP DELETE) on the server, while cross-zone scripting attacks the concept of security zones as implemented by a browser.
- Cross Site Scripting through Log Files An attacker may leverage a system weakness where logs are susceptible to log injection to insert scripts into the system's logs. If these logs are later viewed by an administrator through a thin administrative interface and the log data is not properly HTML encoded before being written to the page, the attackers' scripts stored in the log will be executed in the administrative interface with potentially serious consequences. This attack pattern is really a combination of two other attack patterns: log injection and stored cross site scripting.
- Command Line Execution through SQL Injection An attacker uses standard SQL injection methods to inject data into the command line for execution. This could be done directly through misuse of directives such as MSSQL_xp_cmdshell or indirectly through injection of data into the database that would be interpreted as shell commands. Sometime later, an unscrupulous backend application (or could be part of the functionality of the same application) fetches the injected data stored in the database and uses this data as command line arguments without performing proper validation. The malicious data escapes that data plane by spawning new commands to be executed on the host.
Nessus
NASL family SuSE Local Security Checks NASL id SUSE_11_3_KRB5-101006.NASL description remote authenticated clients could crash the kdc (CVE-2010-1322). last seen 2020-06-01 modified 2020-06-02 plugin id 75558 published 2014-06-13 reporter This script is Copyright (C) 2014-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/75558 title openSUSE Security Update : krb5 (openSUSE-SU-2010:0709-1) 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 krb5-3259. # # The text description of this plugin is (C) SUSE LLC. # include("compat.inc"); if (description) { script_id(75558); script_version("1.4"); script_cvs_date("Date: 2019/10/25 13:36:39"); script_cve_id("CVE-2010-1322"); script_name(english:"openSUSE Security Update : krb5 (openSUSE-SU-2010:0709-1)"); script_summary(english:"Check for the krb5-3259 patch"); script_set_attribute( attribute:"synopsis", value:"The remote openSUSE host is missing a security update." ); script_set_attribute( attribute:"description", value:"remote authenticated clients could crash the kdc (CVE-2010-1322)." ); script_set_attribute( attribute:"see_also", value:"https://bugzilla.novell.com/show_bug.cgi?id=640990" ); script_set_attribute( attribute:"see_also", value:"https://lists.opensuse.org/opensuse-updates/2010-10/msg00006.html" ); script_set_attribute(attribute:"solution", value:"Update the affected krb5 packages."); 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:novell:opensuse:krb5"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:krb5-32bit"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:krb5-client"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:krb5-devel"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:krb5-devel-32bit"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:krb5-plugin-kdb-ldap"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:krb5-plugin-preauth-pkinit"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:krb5-server"); script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:opensuse:11.3"); script_set_attribute(attribute:"patch_publication_date", value:"2010/10/06"); script_set_attribute(attribute:"plugin_publication_date", value:"2014/06/13"); script_end_attributes(); script_category(ACT_GATHER_INFO); script_copyright(english:"This script is Copyright (C) 2014-2019 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 !~ "^(SUSE11\.3)$") audit(AUDIT_OS_RELEASE_NOT, "openSUSE", "11.3", release); if (!get_kb_item("Host/SuSE/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING); ourarch = get_kb_item("Host/cpu"); if (!ourarch) audit(AUDIT_UNKNOWN_ARCH); if (ourarch !~ "^(i586|i686|x86_64)$") audit(AUDIT_ARCH_NOT, "i586 / i686 / x86_64", ourarch); flag = 0; if ( rpm_check(release:"SUSE11.3", reference:"krb5-1.8.1-5.1.1") ) flag++; if ( rpm_check(release:"SUSE11.3", reference:"krb5-client-1.8.1-5.1.1") ) flag++; if ( rpm_check(release:"SUSE11.3", reference:"krb5-devel-1.8.1-5.1.1") ) flag++; if ( rpm_check(release:"SUSE11.3", reference:"krb5-plugin-kdb-ldap-1.8.1-5.1.1") ) flag++; if ( rpm_check(release:"SUSE11.3", reference:"krb5-plugin-preauth-pkinit-1.8.1-5.1.1") ) flag++; if ( rpm_check(release:"SUSE11.3", reference:"krb5-server-1.8.1-5.1.1") ) flag++; if ( rpm_check(release:"SUSE11.3", cpu:"x86_64", reference:"krb5-32bit-1.8.1-5.1.1") ) flag++; if ( rpm_check(release:"SUSE11.3", cpu:"x86_64", reference:"krb5-devel-32bit-1.8.1-5.1.1") ) 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, "krb5 / krb5-32bit / krb5-client / krb5-devel / krb5-devel-32bit / etc"); }NASL family Fedora Local Security Checks NASL id FEDORA_2010-15803.NASL description This update incorporates the upstream patch to fix an uninitialized pointer crash in the KDC last seen 2020-06-01 modified 2020-06-02 plugin id 49988 published 2010-10-15 reporter This script is Copyright (C) 2010-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/49988 title Fedora 14 : krb5-1.8.2-6.fc14 (2010-15803) NASL family Mandriva Local Security Checks NASL id MANDRIVA_MDVSA-2010-202.NASL description A vulnerability was discovered and corrected in krb5 : The merge_authdata function in kdc_authdata.c in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) 1.8.x before 1.8.4 does not properly manage an index into an authorization-data list, which allows remote attackers to cause a denial of service (daemon crash), or possibly obtain sensitive information, spoof authorization, or execute arbitrary code, via a TGS request, as demonstrated by a request from a Windows Active Directory client (CVE-2010-1322). The updated packages have been patched to correct this issue. last seen 2020-06-01 modified 2020-06-02 plugin id 49972 published 2010-10-14 reporter This script is Copyright (C) 2010-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/49972 title Mandriva Linux Security Advisory : krb5 (MDVSA-2010:202) NASL family Ubuntu Local Security Checks NASL id UBUNTU_USN-999-1.NASL description Mike Roszkowski discovered that the Kerberos KDC did not correctly validate the contents of certain messages. If an authenticated remote attacker sent specially crafted TGS requests, the KDC service would crash, leading to a denial of service. 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 49772 published 2010-10-06 reporter Ubuntu Security Notice (C) 2010-2019 Canonical, Inc. / NASL script (C) 2010-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/49772 title Ubuntu 10.04 LTS / 10.10 : krb5 vulnerability (USN-999-1) NASL family Scientific Linux Local Security Checks NASL id SL_20101110_KRB5_ON_SL6_X.NASL description An uninitialized pointer use flaw was found in the way the MIT Kerberos KDC handled TGS (Ticket-granting Server) request messages. A remote, authenticated attacker could use this flaw to crash the KDC or, possibly, disclose KDC memory or execute arbitrary code with the privileges of the KDC (krb5kdc). (CVE-2010-1322) After installing the updated packages, the krb5kdc daemon will be restarted automatically. last seen 2020-06-01 modified 2020-06-02 plugin id 60894 published 2012-08-01 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/60894 title Scientific Linux Security Update : krb5 on SL6.x i386/x86_64 NASL family Red Hat Local Security Checks NASL id REDHAT-RHSA-2010-0863.NASL description Updated krb5 packages that fix one security issue are now available for Red Hat Enterprise Linux 6. The Red Hat Security Response Team has rated this update as having important security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available from the CVE link in the References section. Kerberos is a network authentication system which allows clients and servers to authenticate to each other using symmetric encryption and a trusted third party, the Key Distribution Center (KDC). An uninitialized pointer use flaw was found in the way the MIT Kerberos KDC handled TGS (Ticket-granting Server) request messages. A remote, authenticated attacker could use this flaw to crash the KDC or, possibly, disclose KDC memory or execute arbitrary code with the privileges of the KDC (krb5kdc). (CVE-2010-1322) Red Hat would like to thank the MIT Kerberos Team for reporting this issue. Upstream acknowledges Mike Roszkowski as the original reporter. All krb5 users should upgrade to these updated packages, which contain a backported patch to correct this issue. After installing the updated packages, the krb5kdc daemon will be restarted automatically. last seen 2020-06-01 modified 2020-06-02 plugin id 50635 published 2010-11-18 reporter This script is Copyright (C) 2010-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/50635 title RHEL 6 : krb5 (RHSA-2010:0863) NASL family Solaris Local Security Checks NASL id SOLARIS11_KERBEROS_20130924_2.NASL description The remote Solaris system is missing necessary patches to address security updates : - The merge_authdata function in kdc_authdata.c in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) 1.8.x before 1.8.4 does not properly manage an index into an authorization-data list, which allows remote attackers to cause a denial of service (daemon crash), or possibly obtain sensitive information, spoof authorization, or execute arbitrary code, via a TGS request that triggers an uninitialized pointer dereference, as demonstrated by a request from a Windows Active Directory client. (CVE-2010-1322) - MIT Kerberos 5 (aka krb5) 1.3.x, 1.4.x, 1.5.x, 1.6.x, 1.7.x, and 1.8.x through 1.8.3 does not properly determine the acceptability of checksums, which might allow remote attackers to modify user-visible prompt text, modify a response to a Key Distribution Center (KDC), or forge a KRB-SAFE message via certain checksums that (1) are unkeyed or (2) use RC4 keys. (CVE-2010-1323) - MIT Kerberos 5 (aka krb5) 1.7.x and 1.8.x through 1.8.3 does not properly determine the acceptability of checksums, which might allow remote attackers to forge GSS tokens, gain privileges, or have unspecified other impact via (1) an unkeyed checksum, (2) an unkeyed PAC checksum, or (3) a KrbFastArmoredReq checksum based on an RC4 key. (CVE-2010-1324) - MIT Kerberos 5 (aka krb5) 1.8.x through 1.8.3 does not reject RC4 key-derivation checksums, which might allow remote authenticated users to forge a (1) AD-SIGNEDPATH or (2) AD-KDC-ISSUED signature, and possibly gain privileges, by leveraging the small key space that results from certain one-byte stream-cipher operations. (CVE-2010-4020) - The Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) 1.7 does not properly restrict the use of TGT credentials for armoring TGS requests, which might allow remote authenticated users to impersonate a client by rewriting an inner request, aka a last seen 2020-06-01 modified 2020-06-02 plugin id 80653 published 2015-01-19 reporter This script is Copyright (C) 2015-2018 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/80653 title Oracle Solaris Third-Party Patch Update : kerberos (cve_2010_1322_improper_input) NASL family Gentoo Local Security Checks NASL id GENTOO_GLSA-201201-13.NASL description The remote host is affected by the vulnerability described in GLSA-201201-13 (MIT Kerberos 5: Multiple vulnerabilities) Multiple vulnerabilities have been discovered in MIT Kerberos 5. Please review the CVE identifiers referenced below for details. Impact : A remote attacker may be able to execute arbitrary code with the privileges of the administration daemon or the Key Distribution Center (KDC) daemon, cause a Denial of Service condition, or possibly obtain sensitive information. Furthermore, a remote attacker may be able to spoof Kerberos authorization, modify KDC responses, forge user data messages, forge tokens, forge signatures, impersonate a client, modify user-visible prompt text, or have other unspecified impact. Workaround : There is no known workaround at this time. last seen 2020-06-01 modified 2020-06-02 plugin id 57655 published 2012-01-24 reporter This script is Copyright (C) 2012-2018 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/57655 title GLSA-201201-13 : MIT Kerberos 5: Multiple vulnerabilities
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References
- http://lists.opensuse.org/opensuse-security-announce/2010-10/msg00006.html
- http://lists.opensuse.org/opensuse-security-announce/2010-10/msg00006.html
- http://web.mit.edu/kerberos/advisories/MITKRB5-SA-2010-006.txt
- http://web.mit.edu/kerberos/advisories/MITKRB5-SA-2010-006.txt
- http://www.mandriva.com/security/advisories?name=MDVSA-2010:202
- http://www.mandriva.com/security/advisories?name=MDVSA-2010:202
- http://www.redhat.com/support/errata/RHSA-2010-0863.html
- http://www.redhat.com/support/errata/RHSA-2010-0863.html
- http://www.securityfocus.com/archive/1/514144/100/0/threaded
- http://www.securityfocus.com/archive/1/514144/100/0/threaded
- http://www.securityfocus.com/bid/43756
- http://www.securityfocus.com/bid/43756
- http://www.ubuntu.com/usn/USN-999-1
- http://www.ubuntu.com/usn/USN-999-1
- http://www.vupen.com/english/advisories/2010/2865
- http://www.vupen.com/english/advisories/2010/2865