Memcached 1.4.31 process_bin_update integer overflow

CVSS Meta Temp Score
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8.9$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, has been found in Memcached 1.4.31. This issue affects the function process_bin_update. Performing a manipulation results in integer overflow. This vulnerability is identified as CVE-2016-8705. The attack can be initiated remotely. There is not any exploit available. It is suggested to install a patch to address this issue.

Detailsinfo

A vulnerability, which was classified as critical, was found in Memcached 1.4.31. This affects the function process_bin_update. The manipulation with an unknown input leads to a integer overflow vulnerability. CWE is classifying the issue as CWE-190. The product performs a calculation that can produce an integer overflow or wraparound, when the logic assumes that the resulting value will always be larger than the original value. This can introduce other weaknesses when the calculation is used for resource management or execution control. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

Multiple integer overflows in process_bin_update 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.

The bug was discovered 10/31/2016. The weakness was released 10/31/2016 by Aleksandar Nikolic with Cisco Talos as confirmed advisory (Website). The advisory is shared at talosintelligence.com. The public release was coordinated with the project team. This vulnerability is uniquely identified as CVE-2016-8705 since 10/17/2016. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details are known, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 95372 (CentOS 6 : memcached (CESA-2016:2820)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family CentOS Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 196618 (Ubuntu Security Notification for Memcached Vulnerabilities (USN-3120-1)).

Applying a patch is able to eliminate this problem. The bugfix is ready for download at github.com. A possible mitigation has been published 4 weeks after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (95372), SecurityFocus (BID 94083†) and SecurityTracker (ID 1037333†). Entries connected to this vulnerability are available at VDB-93800 and VDB-93802. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

Video

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CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 9.0
VulDB Meta Temp Score: 8.9

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CNA Base Score: 9.8
CNA Vector (Talos): 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

Class: Integer overflow
CWE: CWE-190 / CWE-189
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 95372
Nessus Name: CentOS 6 : memcached (CESA-2016:2820)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 850244
OpenVAS Name: Fedora Update for memcached FEDORA-2016-66c70cadb4
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Patch
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Patch: github.com

Timelineinfo

10/17/2016 🔍
10/31/2016 +14 days 🔍
10/31/2016 +0 days 🔍
10/31/2016 +0 days 🔍
11/23/2016 +23 days 🔍
11/25/2016 +2 days 🔍
11/28/2016 +3 days 🔍
11/29/2016 +1 days 🔍
01/06/2017 +38 days 🔍
04/20/2025 +3026 days 🔍

Sourcesinfo

Product: github.com

Advisory: RHSA-2016:2820
Researcher: Aleksandar Nikolic
Organization: Cisco Talos
Status: Confirmed
Coordinated: 🔍

CVE: CVE-2016-8705 (🔍)
GCVE (CVE): GCVE-0-2016-8705
GCVE (VulDB): GCVE-100-93801

OVAL: 🔍

SecurityFocus: 94083 - Memcached Multiple Integer Overflow Vulnerabilities
SecurityTracker: 1037333

See also: 🔍

Entryinfo

Created: 11/25/2016 09:57
Updated: 04/20/2025 10:58
Changes: 11/25/2016 09:57 (82), 07/17/2019 18:34 (7), 10/04/2022 13:42 (3), 10/04/2022 13:47 (13), 10/04/2022 13:53 (1), 04/20/2025 10:58 (15)
Complete: 🔍
Cache ID: 216:89E:103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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