Valve Source Engine /tmp/hl2_relaunch privileges management

CVSS Meta Temp Score
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CTI Interest Score
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6.5$0-$5k0.00

Summaryinfo

A vulnerability was found in Valve Source Engine. It has been classified as critical. Affected is an unknown function of the file /tmp/hl2_relaunch. The manipulation leads to privileges management. This vulnerability is traded as CVE-2020-12242. An attack has to be approached locally. Furthermore, there is an exploit available.

Detailsinfo

A vulnerability was found in Valve Source Engine (unknown version). It has been rated as critical. This issue affects an unknown code block of the file /tmp/hl2_relaunch. The manipulation with an unknown input leads to a privileges management vulnerability. Using CWE to declare the problem leads to CWE-269. The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

Valve Source allows local users to gain privileges by writing to the /tmp/hl2_relaunch file, which is later executed in the context of a different user account.

The weakness was shared 04/27/2020. The identification of this vulnerability is CVE-2020-12242 since 04/24/2020. The exploitation is known to be easy. Attacking locally is a requirement. The requirement for exploitation is a simple authentication. Technical details as well as a public exploit are known. The attack technique deployed by this issue is T1068 according to MITRE ATT&CK.

A public exploit has been developed in Python and been published 1 days after the advisory. The exploit is available at exploit-db.com. It is declared as functional.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at Exploit-DB (48387). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Vendor

Name

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 6.5

VulDB Base Score: 5.3
VulDB Temp Score: 5.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.8
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Privileges management
CWE: CWE-269 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Access: Public
Status: Functional
Programming Language: 🔍
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Exploit-DB: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍
Exploit Delay Time: 🔍

Timelineinfo

04/24/2020 🔍
04/27/2020 +3 days 🔍
04/28/2020 +1 days 🔍
04/28/2020 +0 days 🔍
09/13/2024 +1599 days 🔍

Sourcesinfo

Advisory: 0xem.ma
Status: Not defined

CVE: CVE-2020-12242 (🔍)
GCVE (CVE): GCVE-0-2020-12242
GCVE (VulDB): GCVE-100-154439
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 04/28/2020 11:41
Updated: 09/13/2024 14:48
Changes: 04/28/2020 11:41 (31), 04/29/2020 08:22 (1), 04/29/2020 08:23 (4), 04/29/2020 08:25 (3), 04/29/2020 08:26 (17), 06/03/2024 11:10 (21), 09/13/2024 14:48 (3)
Complete: 🔍
Committer: 0xEmma, bugbyt3
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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