Corosync up to 2.4.3 exec/totemcrypto.c integer overflow

CVSS Meta Temp Score
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CTI Interest Score
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8.1$0-$5k0.00

Summaryinfo

A vulnerability was found in Corosync up to 2.4.3. It has been declared as critical. Affected is an unknown function of the file exec/totemcrypto.c. Such manipulation leads to integer overflow. This vulnerability is uniquely identified as CVE-2018-1084. The attack can be launched remotely. No exploit exists. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Corosync up to 2.4.3. Affected by this issue is some unknown processing of the file exec/totemcrypto.c. The manipulation with an unknown input leads to a integer overflow vulnerability. Using CWE to declare the problem leads to 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. Impacted is confidentiality, integrity, and availability. CVE summarizes:

corosync before version 2.4.4 is vulnerable to an integer overflow in exec/totemcrypto.c.

The bug was discovered 04/12/2018. The weakness was disclosed 04/12/2018 with Citrix (Website). The advisory is shared for download at securityfocus.com. This vulnerability is handled as CVE-2018-1084 since 12/04/2017. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 109693 (Amazon Linux 2 : corosync (ALAS-2018-1014)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Amazon Linux Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 197478 (Ubuntu Security Notification for Corosync Vulnerability (USN-4000-1)).

Upgrading to version 2.4.4 eliminates this vulnerability. A possible mitigation has been published 4 weeks after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (109693) and SecurityFocus (BID 103758†). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.2
VulDB Meta Temp Score: 8.1

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

NVD Base Score: 9.8
NVD Vector: 🔍

CNA Base Score: 7.5
CNA Vector (Red Hat, Inc.): 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

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: 109693
Nessus Name: Amazon Linux 2 : corosync (ALAS-2018-1014)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 860224
OpenVAS Name: Debian Security Advisory DSA 4174-1 (corosync - security update)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
Exposure Time: 🔍

Upgrade: Corosync 2.4.4

Timelineinfo

12/04/2017 🔍
04/12/2018 +128 days 🔍
04/12/2018 +0 days 🔍
04/12/2018 +0 days 🔍
04/12/2018 +0 days 🔍
04/16/2018 +4 days 🔍
05/10/2018 +24 days 🔍
05/11/2018 +1 days 🔍
02/28/2023 +1754 days 🔍

Sourcesinfo

Advisory: RHSA-2018:1169⛔
Researcher: Citrix Security Response Team.
Organization: Citrix
Status: Not defined

CVE: CVE-2018-1084 (🔍)
GCVE (CVE): GCVE-0-2018-1084
GCVE (VulDB): GCVE-100-116192

OVAL: 🔍

SecurityFocus: 103758 - Corosync 'exec/totemcrypto.c' Integer Overflow Vulnerability

Entryinfo

Created: 04/16/2018 09:35
Updated: 02/28/2023 08:19
Changes: 04/16/2018 09:35 (74), 01/25/2020 07:38 (5), 02/10/2021 07:19 (2), 02/10/2021 07:21 (1), 02/28/2023 08:17 (3), 02/28/2023 08:19 (11)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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