MySQL 5.6.x < 5.6.34 Multiple Vulnerabilities (October 2016 CPU) (SWEET32)

critical Nessus 插件 ID 94197
全新!插件严重性现在使用 CVSS v3

计算的插件严重性默认已更新为使用 CVSS v3。没有 CVSS v3 分数的插件将回退到 CVSS v2 来计算严重性。可以在设置下拉列表中切换严重性显示首选项。

简介

The remote database server is affected by multiple vulnerabilities.

描述

The version of MySQL running on the remote host is 5.6.x prior to 5.6.34. It is, therefore, affected by multiple vulnerabilities :

- Multiple integer overflow conditions exist in s3_srvr.c, ssl_sess.c, and t1_lib.c due to improper use of pointer arithmetic for heap-buffer boundary checks. An unauthenticated, remote attacker can exploit this to cause a denial of service. (CVE-2016-2177)

- An information disclosure vulnerability exists in the dsa_sign_setup() function in dsa_ossl.c due to a failure to properly ensure the use of constant-time operations.
An unauthenticated, remote attacker can exploit this, via a timing side-channel attack, to disclose DSA key information. (CVE-2016-2178)

- A denial of service vulnerability exists in the DTLS implementation due to a failure to properly restrict the lifetime of queue entries associated with unused out-of-order messages. An unauthenticated, remote attacker can exploit this, by maintaining multiple crafted DTLS sessions simultaneously, to exhaust memory.
(CVE-2016-2179)

- An out-of-bounds read error exists in the X.509 Public Key Infrastructure Time-Stamp Protocol (TSP) implementation. An unauthenticated, remote attacker can exploit this, via a crafted time-stamp file that is mishandled by the 'openssl ts' command, to cause denial of service or to disclose sensitive information.
(CVE-2016-2180)

- A denial of service vulnerability exists in the Anti-Replay feature in the DTLS implementation due to improper handling of epoch sequence numbers in records.
An unauthenticated, remote attacker can exploit this, via spoofed DTLS records, to cause legitimate packets to be dropped. (CVE-2016-2181)

- An overflow condition exists in the BN_bn2dec() function in bn_print.c due to improper validation of user-supplied input when handling BIGNUM values. An unauthenticated, remote attacker can exploit this to crash the process. (CVE-2016-2182)

- A vulnerability exists, known as SWEET32, in the 3DES and Blowfish algorithms due to the use of weak 64-bit block ciphers by default. A man-in-the-middle attacker who has sufficient resources can exploit this vulnerability, via a 'birthday' attack, to detect a collision that leaks the XOR between the fixed secret and a known plaintext, allowing the disclosure of the secret text, such as secure HTTPS cookies, and possibly resulting in the hijacking of an authenticated session.
(CVE-2016-2183)

- An unspecified flaw exists in the Optimizer subcomponent that allows an authenticated, remote attacker to cause a denial of service condition. (CVE-2016-3492)

- An unspecified flaw exists in the Security: Encryption subcomponent that allows an authenticated, remote attacker to disclose sensitive information.
(CVE-2016-5584)

- An unspecified flaw exists in the MyISAM subcomponent that allows a local attacker to gain elevated privileges. (CVE-2016-5616)

- An unspecified flaw exists in the Error Handling subcomponent that allows a local attacker to gain elevated privileges. (CVE-2016-5617)

- An unspecified flaw exists in the GIS subcomponent that allows an authenticated, remote attacker to cause a denial of service condition. (CVE-2016-5626)

- An unspecified flaw exists in the Federated subcomponent that allows an authenticated, remote attacker to cause a denial of service condition. (CVE-2016-5629)

- A flaw exists in the tls_decrypt_ticket() function in t1_lib.c due to improper handling of ticket HMAC digests. An unauthenticated, remote attacker can exploit this, via a ticket that is too short, to crash the process, resulting in a denial of service.
(CVE-2016-6302)

- An integer overflow condition exists in the MDC2_Update() function in mdc2dgst.c due to improper validation of user-supplied input. An unauthenticated, remote attacker can exploit this to cause a heap-based buffer overflow, resulting in a denial of service condition or possibly the execution of arbitrary code.
(CVE-2016-6303)

- A flaw exists in the ssl_parse_clienthello_tlsext() function in t1_lib.c due to improper handling of overly large OCSP Status Request extensions from clients. An unauthenticated, remote attacker can exploit this, via large OCSP Status Request extensions, to exhaust memory resources, resulting in a denial of service condition.
(CVE-2016-6304)

- An out-of-bounds read error exists in the certificate parser that allows an unauthenticated, remote attacker to cause a denial of service via crafted certificate operations. (CVE-2016-6306)

- A flaw exists in the check_log_path() function within file sql/sys_vars.cc due to inadequate restrictions on the ability to write to the my.cnf configuration file and allowing the loading of configuration files from path locations not used by current versions. An authenticated, remote attacker can exploit this issue by using specially crafted queries that utilize logging functionality to create new files or append custom content to existing files. This allows the attacker to gain root privileges by inserting a custom .cnf file with a 'malloc_lib=' directive pointing to specially crafted mysql_hookandroot_lib.so file and thereby cause MySQL to load a malicious library the next time it is started. (CVE-2016-6662)

- A flaw exists in wolfSSL, specifically within the C software version of AES Encryption and Decryption, due to table lookups not properly considering cache-bank access times. A local attacker can exploit this, via a specially crafted application, to disclose AES keys.
(CVE-2016-7440)

- An unspecified flaw exists in the Types subcomponent that allows an authenticated, remote attacker to cause a denial of service condition.(CVE-2016-8283)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

解决方案

Upgrade to MySQL version 5.6.34 or later.

另见

http://www.nessus.org/u?bac902d5

http://dev.mysql.com/doc/relnotes/mysql/5.6/en/news-5-6-34.html

http://www.nessus.org/u?fbd97f45

https://sweet32.info/

https://www.openssl.org/blog/blog/2016/08/24/sweet32/

http://www.nessus.org/u?453a538d

插件详情

严重性: Critical

ID: 94197

文件名: mysql_5_6_34_rpm.nasl

版本: 1.10

类型: local

代理: unix

系列: Databases

发布时间: 2016/10/21

最近更新时间: 2020/6/3

依存关系: ssh_get_info.nasl

风险信息

CVSS 分数来源: CVE-2016-6662

VPR

风险因素: Critical

分数: 9.2

CVSS v2

风险因素: Critical

基本分数: 10

时间分数: 7.8

矢量: AV:N/AC:L/Au:N/C:C/I:C/A:C

时间矢量: E:POC/RL:OF/RC:C

CVSS v3

风险因素: Critical

基本分数: 9.8

时间分数: 8.8

矢量: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

时间矢量: E:P/RL:O/RC:C

漏洞信息

CPE: cpe:/a:oracle:mysql, p-cpe:/a:amazon:linux:mysql, p-cpe:/a:centos:centos:mysql, p-cpe:/a:fedoraproject:fedora:mysql, p-cpe:/a:fermilab:scientific_linux:mysql, p-cpe:/a:novell:opensuse:mysql, p-cpe:/a:novell:suse_linux:mysql, p-cpe:/a:oracle:linux:mysql, p-cpe:/a:redhat:enterprise_linux:mysql

必需的 KB 项: Host/local_checks_enabled

可利用: true

易利用性: Exploits are available

补丁发布日期: 2016/10/18

漏洞发布日期: 2016/5/4

参考资料信息

CVE: CVE-2016-2177, CVE-2016-2178, CVE-2016-2179, CVE-2016-2180, CVE-2016-2181, CVE-2016-2182, CVE-2016-2183, CVE-2016-3492, CVE-2016-5584, CVE-2016-5616, CVE-2016-5617, CVE-2016-5626, CVE-2016-5629, CVE-2016-6302, CVE-2016-6303, CVE-2016-6304, CVE-2016-6306, CVE-2016-6662, CVE-2016-7440, CVE-2016-8283

BID: 91081, 91319, 92117, 92557, 92628, 92630, 92912, 92982, 92984, 92987, 93150, 93153, 93612, 93614, 93638, 93650, 93659, 93668, 93735, 93737

EDB-ID: 40360