Vulnerabilities > CVE-2019-13508 - Improper Restriction of Operations within the Bounds of a Memory Buffer vulnerability in multiple products
Attack vector
NETWORK Attack complexity
LOW Privileges required
NONE Confidentiality impact
PARTIAL Integrity impact
PARTIAL Availability impact
PARTIAL Summary
FreeTDS through 1.1.11 has a Buffer Overflow.
Vulnerable Configurations
| Part | Description | Count |
|---|---|---|
| Application | 9 | |
| OS | 3 |
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-2020-741.NASL description This update for freetds to 1.1.36 fixes the following issues : Security issue fixed : - CVE-2019-13508: Fixed a heap overflow that could have been caused by malicious servers sending UDT types over protocol version 5.0 (bsc#1141132). Non-security issues fixed : - Enabled Kerberos support - Version update to 1.1.36 : - Default TDS protocol version is now last seen 2020-06-06 modified 2020-06-01 plugin id 136995 published 2020-06-01 reporter This script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/136995 title openSUSE Security Update : freetds (openSUSE-2020-741) code # # (C) Tenable Network Security, Inc. # # The descriptive text and package checks in this plugin were # extracted from openSUSE Security Update openSUSE-2020-741. # # The text description of this plugin is (C) SUSE LLC. # include("compat.inc"); if (description) { script_id(136995); script_version("1.2"); script_set_attribute(attribute:"plugin_modification_date", value:"2020/06/05"); script_cve_id("CVE-2019-13508"); script_name(english:"openSUSE Security Update : freetds (openSUSE-2020-741)"); script_summary(english:"Check for the openSUSE-2020-741 patch"); script_set_attribute( attribute:"synopsis", value:"The remote openSUSE host is missing a security update." ); script_set_attribute( attribute:"description", value: "This update for freetds to 1.1.36 fixes the following issues : Security issue fixed : - CVE-2019-13508: Fixed a heap overflow that could have been caused by malicious servers sending UDT types over protocol version 5.0 (bsc#1141132). Non-security issues fixed : - Enabled Kerberos support - Version update to 1.1.36 : - Default TDS protocol version is now 'auto' - Improved UTF-8 performances - TDS Pool Server is enabled - MARS support is enabled - NTLMv2 is enabled - See NEWS and ChangeLog for a complete list of changes This update was imported from the SUSE:SLE-15:Update update project." ); script_set_attribute( attribute:"see_also", value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1141132" ); script_set_attribute( attribute:"solution", value:"Update the affected freetds packages." ); script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P"); script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C"); script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"); script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C"); script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available"); script_set_attribute(attribute:"plugin_type", value:"local"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:freetds-config"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:freetds-debuginfo"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:freetds-debugsource"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:freetds-devel"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:freetds-tools"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:freetds-tools-debuginfo"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:libct4"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:libct4-debuginfo"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:libsybdb5"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:libsybdb5-debuginfo"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:libtdsodbc0"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:libtdsodbc0-debuginfo"); script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:opensuse:15.1"); script_set_attribute(attribute:"vuln_publication_date", value:"2019/10/31"); script_set_attribute(attribute:"patch_publication_date", value:"2020/05/29"); script_set_attribute(attribute:"plugin_publication_date", value:"2020/06/01"); script_set_attribute(attribute:"generated_plugin", value:"current"); script_end_attributes(); script_category(ACT_GATHER_INFO); script_copyright(english:"This script is Copyright (C) 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 !~ "^(SUSE15\.1)$") audit(AUDIT_OS_RELEASE_NOT, "openSUSE", "15.1", release); if (!get_kb_item("Host/SuSE/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING); ourarch = get_kb_item("Host/cpu"); if (!ourarch) audit(AUDIT_UNKNOWN_ARCH); if (ourarch !~ "^(i586|i686|x86_64)$") audit(AUDIT_ARCH_NOT, "i586 / i686 / x86_64", ourarch); flag = 0; if ( rpm_check(release:"SUSE15.1", reference:"freetds-config-1.1.36-lp151.3.3.1") ) flag++; if ( rpm_check(release:"SUSE15.1", reference:"freetds-debuginfo-1.1.36-lp151.3.3.1") ) flag++; if ( rpm_check(release:"SUSE15.1", reference:"freetds-debugsource-1.1.36-lp151.3.3.1") ) flag++; if ( rpm_check(release:"SUSE15.1", reference:"freetds-devel-1.1.36-lp151.3.3.1") ) flag++; if ( rpm_check(release:"SUSE15.1", reference:"freetds-tools-1.1.36-lp151.3.3.1") ) flag++; if ( rpm_check(release:"SUSE15.1", reference:"freetds-tools-debuginfo-1.1.36-lp151.3.3.1") ) flag++; if ( rpm_check(release:"SUSE15.1", reference:"libct4-1.1.36-lp151.3.3.1") ) flag++; if ( rpm_check(release:"SUSE15.1", reference:"libct4-debuginfo-1.1.36-lp151.3.3.1") ) flag++; if ( rpm_check(release:"SUSE15.1", reference:"libsybdb5-1.1.36-lp151.3.3.1") ) flag++; if ( rpm_check(release:"SUSE15.1", reference:"libsybdb5-debuginfo-1.1.36-lp151.3.3.1") ) flag++; if ( rpm_check(release:"SUSE15.1", reference:"libtdsodbc0-1.1.36-lp151.3.3.1") ) flag++; if ( rpm_check(release:"SUSE15.1", reference:"libtdsodbc0-debuginfo-1.1.36-lp151.3.3.1") ) 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, "freetds-config / freetds-debuginfo / freetds-debugsource / etc"); }NASL family Ubuntu Local Security Checks NASL id UBUNTU_USN-4173-1.NASL description Felix Wilhelm discovered that FreeTDS incorrectly handled certain types after a protocol downgrade. A remote attacker could use this issue to cause FreeTDS to crash, resulting in a denial of service, or possibly execute arbitrary code. 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 130429 published 2019-10-31 reporter Ubuntu Security Notice (C) 2019 Canonical, Inc. / NASL script (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/130429 title Ubuntu 18.04 LTS / 19.04 / 19.10 : freetds vulnerability (USN-4173-1)