An integer overflow in the process_bin_append_prepend function in Memcached, which is responsible for processing multiple commands of Memcached binary protocol, can be abused to cause heap overflow and lead to remote code execution.

According to the versions of the memcached package installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities :

  - memcached before 1.4.17, when running in verbose mode,     allows remote attackers to cause a denial of service     (crash) via a request that triggers an 'unbounded key     print' during logging, related to an issue that was     'quickly grepped out of the source tree,' a different     vulnerability than CVE-2013-0179 and     CVE-2013-7290.(CVE-2013-7291)

  - An integer overflow flaw, leading to a heap-based     buffer overflow, was found in memcached's parsing of     SASL authentication messages. An attacker could create     a specially crafted message that would cause the     memcached server to crash or, potentially, execute     arbitrary code.(CVE-2016-8706)

  - An integer overflow flaw, leading to a heap-based     buffer overflow, was found in the memcached binary     protocol. An attacker could create a specially crafted     message that would cause the memcached server to crash     or, potentially, execute arbitrary code.(CVE-2016-8704)

  - The process_bin_delete function in memcached.c in     memcached 1.4.4 and other versions before 1.4.17, when     running in verbose mode, allows remote attackers to     cause a denial of service (segmentation fault) via a     request to delete a key, which does not account for the     lack of a null terminator in the key and triggers a     buffer over-read when printing to     stderr.(CVE-2013-0179)

  - An integer overflow flaw, leading to a heap-based     buffer overflow, was found in the memcached binary     protocol. An attacker could create a specially crafted     message that would cause the memcached server to crash     or, potentially, execute arbitrary code.(CVE-2016-8705)

  - memcached version prior to 1.4.37 contains an Integer     Overflow vulnerability in items.c:item_free() that can     result in data corruption and deadlocks due to items     existing in hash table being reused from free list.
    This attack appear to be exploitable via network     connectivity to the memcached service. This     vulnerability appears to have been fixed in 1.4.37 and     later.(CVE-2018-1000127)

  - memcached before 1.4.17 allows remote attackers to     bypass authentication by sending an invalid request     with SASL credentials, then sending another request     with incorrect SASL credentials.(CVE-2013-7239)

  - The do_item_get function in items.c in memcached 1.4.4     and other versions before 1.4.17, when running in     verbose mode, allows remote attackers to cause a denial     of service (segmentation fault) via a request to delete     a key, which does not account for the lack of a null     terminator in the key and triggers a buffer over-read     when printing to stderr, a different vulnerability than     CVE-2013-0179.(CVE-2013-7290)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

According to the versions of the memcached package installed, the EulerOS Virtualization for ARM 64 installation on the remote host is affected by the following vulnerabilities :

  - An integer overflow flaw, leading to a heap-based     buffer overflow, was found in the memcached binary     protocol. An attacker could create a specially crafted     message that would cause the memcached server to crash     or, potentially, execute arbitrary code.(CVE-2016-8704)

  - An integer overflow flaw, leading to a heap-based     buffer overflow, was found in the memcached binary     protocol. An attacker could create a specially crafted     message that would cause the memcached server to crash     or, potentially, execute arbitrary code.(CVE-2016-8705)

  - An integer overflow flaw, leading to a heap-based     buffer overflow, was found in memcached's parsing of     SASL authentication messages. An attacker could create     a specially crafted message that would cause the     memcached server to crash or, potentially, execute     arbitrary code.(CVE-2016-8706)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

According to the versions of the memcached package installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

  - Two integer overflow flaws, leading to heap-based     buffer overflows, were found in the memcached binary     protocol. An attacker could create a specially crafted     message that would cause the memcached server to crash     or, potentially, execute arbitrary code.
    (CVE-2016-8704, CVE-2016-8705)

  - An integer overflow flaw, leading to a heap-based     buffer overflow, was found in memcached's parsing of     SASL authentication messages. An attacker could create     a specially crafted message that would cause the     memcached server to crash or, potentially, execute     arbitrary code.(CVE-2016-8706)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The remote host is affected by the vulnerability described in GLSA-201701-12 (memcached: Multiple vulnerabilities)

    Multiple integer overflow vulnerabilities were discovered in memcached.
      Please review the CVE identifiers and Cisco TALOS reports referenced       below for details.
  Impact :

    A remote attacker could abuse memcached&rsquo;s binary protocol leading to       the remote execution of arbitrary code.
  Workaround :

    There is no known workaround at this time.

Security Fix(es) :

  - Two integer overflow flaws, leading to heap-based buffer     overflows, were found in the memcached binary protocol.
    An attacker could create a specially crafted message     that would cause the memcached server to crash or,     potentially, execute arbitrary code. (CVE-2016-8704,     CVE-2016-8705)

  - An integer overflow flaw, leading to a heap-based buffer     overflow, was found in memcached's parsing of SASL     authentication messages. An attacker could create a     specially crafted message that would cause the memcached     server to crash or, potentially, execute arbitrary code.
    (CVE-2016-8706)

Update to the latest upstream release, which fixes CVE-2016-8704, CVE-2016-8705, CVE-2016-8706.

Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website.
Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

An update for memcached is now available for Red Hat Enterprise Linux 6.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

memcached is a high-performance, distributed memory object caching system, generic in nature, but intended for use in speeding up dynamic web applications by alleviating database load.

Security Fix(es) :

* Two integer overflow flaws, leading to heap-based buffer overflows, were found in the memcached binary protocol. An attacker could create a specially crafted message that would cause the memcached server to crash or, potentially, execute arbitrary code. (CVE-2016-8704, CVE-2016-8705)

An update for memcached is now available for Red Hat Enterprise Linux 7.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

memcached is a high-performance, distributed memory object caching system, generic in nature, but intended for use in speeding up dynamic web applications by alleviating database load.

Security Fix(es) :

* Two integer overflow flaws, leading to heap-based buffer overflows, were found in the memcached binary protocol. An attacker could create a specially crafted message that would cause the memcached server to crash or, potentially, execute arbitrary code. (CVE-2016-8704, CVE-2016-8705)

* An integer overflow flaw, leading to a heap-based buffer overflow, was found in memcached's parsing of SASL authentication messages. An attacker could create a specially crafted message that would cause the memcached server to crash or, potentially, execute arbitrary code.
(CVE-2016-8706)

Security Fix(es) :

  - Two integer overflow flaws, leading to heap-based buffer     overflows, were found in the memcached binary protocol.
    An attacker could create a specially crafted message     that would cause the memcached server to crash or,     potentially, execute arbitrary code. (CVE-2016-8704,     CVE-2016-8705)

The remote Oracle Linux 6 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2016-2820 advisory.

    [0:1.4.4-3.el6_8.1]
    - fix vulnerabilities allowing remote code execution (CVE-2016-8704,       CVE-2016-8705, CVE-2016-8706)

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

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

The remote Oracle Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2016-2819 advisory.

    - fix vulnerabilities allowing remote code execution (CVE-2016-8704,       CVE-2016-8705, CVE-2016-8706)

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

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

This update for memcached fixes the following security issues :

  - CVE-2016-8704: Server append/prepend remote code     execution (boo#1007871)

  - CVE-2016-8705: Server update remote code execution     (boo#1007870)

  - CVE-2016-8706: Server ASL authentication remote code     execution (boo#1007869)

In addition, memcached was updated to 1.4.33 to include all upstream improvements and bugfixes.

This update for memcached fixes the following security issues :

  - CVE-2016-8704: Server append/prepend remote code     execution (boo#1007871)

  - CVE-2016-8705: Server update remote code execution     (boo#1007870)

  - CVE-2016-8706: Server ASL authentication remote code     execution (boo#1007869)

Security fix for CVE-2016-8704, CVE-2016-8705, CVE-2016-8706

Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website.
Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

An integer overflow flaw, leading to a heap-based buffer overflow, was found in the memcached binary protocol. An attacker could create a specially crafted message that would cause the memcached server to crash or, potentially, execute arbitrary code. (CVE-2016-8704 , CVE-2016-8705)

An integer overflow flaw, leading to a heap-based buffer overflow, was found in memcached's parsing of SASL authentication messages. An attacker could create a specially crafted message that would cause the memcached server to crash or, potentially, execute arbitrary code.
(CVE-2016-8706)

Multiple vulnerabilites have been found in memcached, a high-performance memory object caching system. A remote attacker could take advantage of these flaws to cause a denial of service (daemon crash), or potentially to execute arbitrary code.  

CVE-2013-7291

It was discovered that memcached, when running in verbose mode, can be crashed by sending carefully crafted requests that trigger an unbounded key print, resulting in a daemon crash.

CVE-2016-8704, CVE-2016-8705, CVE-2016-8706

Aleksandar Nikolic of Cisco Talos found several vulnerabilities in memcached. A remote attacker could cause an integer overflow by sending carefully crafted requests to the memcached server, resulting in a daemon crash.

For Debian 7 'Wheezy', these problems have been fixed in version 1.4.13-0.2+deb7u2.

We recommend that you upgrade your memcached packages.

NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Aleksandar Nikolic of Cisco Talos discovered several integer overflow vulnerabilities in memcached, a high-performance memory object caching system. A remote attacker can take advantage of these flaws to cause a denial of service (daemon crash), or potentially to execute arbitrary code.

The remote Ubuntu 14.04 LTS / 16.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-3120-1 advisory.

    Aleksandar Nikolic discovered that Memcached incorrectly handled certain malformed commands. A remote     attacker could use this issue to cause Memcached to crash, resulting in a denial of service, or possibly     execute arbitrary code.

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

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

Cisco Talos reports :

Multiple integer overflow vulnerabilities exist within Memcached that could be exploited to achieve remote code execution on the targeted system. These vulnerabilities manifest in various Memcached functions that are used in inserting, appending, prepending, or modifying key-value data pairs. Systems which also have Memcached compiled with support for SASL authentication are also vulnerable to a third flaw due to how Memcached handles SASL authentication commands.

An attacker could exploit these vulnerabilities by sending a specifically crafted Memcached command to the targeted server.
Additionally, these vulnerabilities could also be exploited to leak sensitive process information which an attacker could use to bypass common exploitation mitigations, such as ASLR, and can be triggered multiple times. This enables reliable exploitation which makes these vulnerabilities severe.

ID	Name	Product	Family	Severity
124938	EulerOS Virtualization 3.0.1.0 : memcached (EulerOS-SA-2019-1435)	Nessus	Huawei Local Security Checks	critical
124899	EulerOS Virtualization for ARM 64 3.0.1.0 : memcached (EulerOS-SA-2019-1396)	Nessus	Huawei Local Security Checks	critical
99845	EulerOS 2.0 SP1 : memcached (EulerOS-SA-2016-1086)	Nessus	Huawei Local Security Checks	critical
96243	GLSA-201701-12 : memcached: Multiple vulnerabilities	Nessus	Gentoo Local Security Checks	critical
95866	Scientific Linux Security Update : memcached on SL7.x x86_64 (20161123)	Nessus	Scientific Linux Local Security Checks	critical
95611	Fedora 25 : memcached (2016-0c4e822340)	Nessus	Fedora Local Security Checks	critical
95372	CentOS 6 : memcached (CESA-2016:2820)	Nessus	CentOS Local Security Checks	critical
95356	CentOS 7 : memcached (CESA-2016:2819)	Nessus	CentOS Local Security Checks	critical
95293	Scientific Linux Security Update : memcached on SL6.x i386/x86_64 (20161123)	Nessus	Scientific Linux Local Security Checks	critical
95292	RHEL 6 : memcached (RHSA-2016:2820)	Nessus	Red Hat Local Security Checks	critical
95291	RHEL 7 : memcached (RHSA-2016:2819)	Nessus	Red Hat Local Security Checks	critical
95277	Oracle Linux 6 : memcached (ELSA-2016-2820)	Nessus	Oracle Linux Local Security Checks	critical
95276	Oracle Linux 7 : memcached (ELSA-2016-2819)	Nessus	Oracle Linux Local Security Checks	critical
94949	openSUSE Security Update : memcached (openSUSE-2016-1314)	Nessus	SuSE Local Security Checks	critical
94948	openSUSE Security Update : memcached (openSUSE-2016-1313)	Nessus	SuSE Local Security Checks	critical
94814	Fedora 24 : memcached (2016-66c70cadb4)	Nessus	Fedora Local Security Checks	critical
94804	Fedora 23 : memcached (2016-4df986a71f)	Nessus	Fedora Local Security Checks	critical
94681	Amazon Linux AMI : memcached (ALAS-2016-761)	Nessus	Amazon Linux Local Security Checks	critical
94584	Debian DLA-701-1 : memcached security update	Nessus	Debian Local Security Checks	critical
94521	Debian DSA-3704-1 : memcached - security update	Nessus	Debian Local Security Checks	critical
94509	Ubuntu 14.04 LTS / 16.04 LTS : Memcached vulnerabilities (USN-3120-1)	Nessus	Ubuntu Local Security Checks	critical
94459	FreeBSD : memcached -- multiple vulnerabilities (f4bf713f-6ac7-4b76-8980-47bf90c5419f)	Nessus	FreeBSD Local Security Checks	critical

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CVE-2016-8704

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