Phusion Passenger up to 5.3.1 ExecHelperMain.cpp switchGroup access control

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.2$0-$5k0.00

Summaryinfo

A vulnerability was found in Phusion Passenger up to 5.3.1. It has been classified as critical. Affected is the function switchGroup of the file agent/ExecHelper/ExecHelperMain.cpp. The manipulation leads to access control. This vulnerability is traded as CVE-2018-12615. It is possible to initiate the attack remotely. There is no exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in Phusion Passenger up to 5.3.1. It has been rated as critical. This issue affects the function switchGroup of the file agent/ExecHelper/ExecHelperMain.cpp. The manipulation with an unknown input leads to a access control vulnerability. Using CWE to declare the problem leads to CWE-264. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

An issue was discovered in switchGroup() in agent/ExecHelper/ExecHelperMain.cpp in Phusion Passenger before 5.3.2. The set of groups (gidset) is not set correctly, leaving it up to randomness (i.e., uninitialized memory) which supplementary groups are actually being set while lowering privileges.

The bug was discovered 05/29/2018. The weakness was shared 06/21/2018 (Website). The advisory is shared at github.com. The identification of this vulnerability is CVE-2018-12615 since 06/21/2018. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1068 for this issue.

The vulnerability was handled as a non-public zero-day exploit for at least 23 days. During that time the estimated underground price was around $0-$5k.

Upgrading to version 5.3.2 eliminates this vulnerability.

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Productinfo

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.2

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

NVD Base Score: 5.3
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: Access control
CWE: CWE-264
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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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Passenger 5.3.2
Patch: github.com

Timelineinfo

05/29/2018 🔍
06/21/2018 +22 days 🔍
06/21/2018 +0 days 🔍
06/21/2018 +0 days 🔍
06/22/2018 +1 days 🔍
03/28/2023 +1740 days 🔍

Sourcesinfo

Product: github.com

Advisory: 4e97fdb86d0a0141ec9a052c6e691fcd07bb45c8
Status: Not defined

CVE: CVE-2018-12615 (🔍)
GCVE (CVE): GCVE-0-2018-12615
GCVE (VulDB): GCVE-100-119789

Entryinfo

Created: 06/22/2018 08:08
Updated: 03/28/2023 14:27
Changes: 06/22/2018 08:08 (60), 02/21/2020 08:50 (1), 03/28/2023 14:27 (5)
Complete: 🔍
Cache ID: 216::103

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