Pulse Secure Client up to 9.1.5 PulseSecureService.exe toctou

CVSS Meta Temp Score
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CTI Interest Score
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5.5$0-$5k0.00

Summaryinfo

A vulnerability has been found in Pulse Secure Client up to 9.1.5 and classified as critical. The affected element is an unknown function of the file PulseSecureService.exe. Performing a manipulation results in toctou. This vulnerability is cataloged as CVE-2020-13162. The attack must be initiated from a local position. Furthermore, there is an exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability classified as critical has been found in Pulse Secure Client up to 9.1.5. This affects an unknown part of the file PulseSecureService.exe. The manipulation with an unknown input leads to a toctou vulnerability. CWE is classifying the issue as CWE-367. The product checks the state of a resource before using that resource, but the resource's state can change between the check and the use in a way that invalidates the results of the check. This can cause the product to perform invalid actions when the resource is in an unexpected state. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

A time-of-check time-of-use vulnerability in PulseSecureService.exe in Pulse Secure Client versions prior to 9.1.6 down to 5.3 R70 for Windows (which runs as NT AUTHORITY/SYSTEM) allows unprivileged users to run a Microsoft Installer executable with elevated privileges.

The weakness was shared 06/16/2020 (Website). The advisory is shared at redtimmy.com. This vulnerability is uniquely identified as CVE-2020-13162 since 05/19/2020. An attack has to be approached locally. No form of authentication is needed for exploitation. Technical details and a public exploit are known.

After 3 months, there has been an exploit disclosed. The exploit is shared for download at seclists.org. It is declared as proof-of-concept.

Upgrading to version 9.1.6 eliminates this vulnerability.

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.7
VulDB Meta Temp Score: 5.5

VulDB Base Score: 4.5
VulDB Temp Score: 4.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.0
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Toctou
CWE: CWE-367 / CWE-362
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍
Exploit Delay Time: 🔍

Upgrade: Client 9.1.6

Timelineinfo

05/19/2020 🔍
06/16/2020 +28 days 🔍
06/17/2020 +1 days 🔍
09/02/2020 +77 days 🔍
05/06/2025 +1706 days 🔍

Sourcesinfo

Advisory: redtimmy.com
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2020-13162 (🔍)
GCVE (CVE): GCVE-0-2020-13162
GCVE (VulDB): GCVE-100-156789
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 06/17/2020 06:43
Updated: 05/06/2025 00:05
Changes: 06/17/2020 06:43 (44), 09/08/2020 12:26 (17), 10/24/2020 19:20 (1), 05/06/2025 00:05 (20)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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