VDB-160165 · CVE-2020-5774 · GCVE-0-2020-5774

Tenable Nessus up to 8.11.0 Session Expiration session expiration

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
5.2	$0-$5k	0.00

Summaryinfo

A vulnerability was found in Tenable Nessus up to 8.11.0. It has been classified as critical. Impacted is an unknown function of the component Session Expiration. This manipulation causes session expiration. This vulnerability is registered as CVE-2020-5774. Remote exploitation of the attack is possible. No exploit is available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability classified as problematic was found in Tenable Nessus up to 8.11.0 (Security Testing Software). Affected by this vulnerability is an unknown code block of the component Session Expiration. The manipulation with an unknown input leads to a session expiration vulnerability. The CWE definition for the vulnerability is CWE-613. According to WASC, "Insufficient Session Expiration is when a web site permits an attacker to reuse old session credentials or session IDs for authorization." As an impact it is known to affect confidentiality. The summary by CVE is:

Nessus versions 8.11.0 and earlier were found to maintain sessions longer than the permitted period in certain scenarios. The lack of proper session expiration could allow attackers with local access to login into an existing browser session.

The weakness was published 08/21/2020 (Website). The advisory is shared at tenable.com. This vulnerability is known as CVE-2020-5774 since 01/06/2020. The exploitation appears to be difficult. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Neither technical details nor an exploit are publicly available.

Upgrading to version 8.11.1 eliminates this vulnerability.

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Productinfo

Type

Security Testing Software

Vendor

Tenable

Name

Nessus

Version

License

open-source

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.4
VulDB Meta Temp Score: 5.3

VulDB Base Score: 3.7
VulDB Temp Score: 3.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.1
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Vendor Base Score (Tenable): 🔍
NVD Base Score: 🔍

Exploitinginfo

Class: Session expiration
CWE: CWE-613
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Nessus 8.11.1

Timelineinfo

01/06/2020 🔍
08/21/2020 +228 days 🔍
08/22/2020 +1 days 🔍
08/22/2020 +0 days 🔍

Sourcesinfo

Advisory: tenable.com
Status: Not defined

CVE: CVE-2020-5774 (🔍)
GCVE (CVE): GCVE-0-2020-5774
GCVE (VulDB): GCVE-100-160165
scip Labs: https://www.scip.ch/en/?labs.20091204

Entryinfo

Created: 08/22/2020 09:18
Updated: 08/22/2020 09:23
Changes: 08/22/2020 09:18 (46), 08/22/2020 09:23 (18)
Complete: 🔍
Cache ID: 216::103