rpm-ostree/rpm-ostree-client prior 2017.3 GPG Signature certificate validation

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.5$0-$5k0.00

A vulnerability, which was classified as critical, has been found in rpm-ostree and rpm-ostree-client. Affected by this issue is an unknown function of the component GPG Signature Handler. The manipulation with an unknown input leads to a certificate validation vulnerability. Using CWE to declare the problem leads to CWE-295. The product does not validate, or incorrectly validates, a certificate. Impacted is confidentiality, integrity, and availability. CVE summarizes:

It was discovered that rpm-ostree and rpm-ostree-client before 2017.3 fail to properly check GPG signatures on packages when doing layering. Packages with unsigned or badly signed content could fail to be rejected as expected. This issue is partially mitigated on RHEL Atomic Host, where certificate pinning is used by default.

The bug was discovered 03/02/2017. The weakness was released 07/27/2018 by Colin with Red Hat as not defined bug report (Bugzilla). The advisory is shared for download at bugzilla.redhat.com. This vulnerability is handled as CVE-2017-2623 since 11/30/2016. The attack may be launched remotely. No form of authentication is required for exploitation. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1587.003.

The vulnerability was handled as a non-public zero-day exploit for at least 18 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 97867 (Fedora 24 : rpm-ostree (2017-788129b61c)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Fedora Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 276543 (Fedora Security Update for rpm-ostree (FEDORA-2017-003fa5648c)).

Upgrading to version 2017.3 eliminates this vulnerability. A possible mitigation has been published even before and not after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (97867) and SecurityFocus (BID 96558†). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.6
VulDB Meta Temp Score: 5.5

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.3
NVD Vector: 🔍

CNA Base Score: 5.3
CNA Vector (Red Hat, Inc.): 🔍

CVSSv2info

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

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Exploitinginfo

Class: Certificate validation
CWE: CWE-295 / CWE-287
CAPEC: 🔍
ATT&CK: 🔍

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

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EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 97867
Nessus Name: Fedora 24 : rpm-ostree (2017-788129b61c)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 867773
OpenVAS Name: Fedora Update for rpm-ostree FEDORA-2017-788129b61c
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: rpm-ostree/rpm-ostree-client 2017.3

Timelineinfo

11/30/2016 🔍
03/02/2017 +91 days 🔍
03/02/2017 +0 days 🔍
03/19/2017 +17 days 🔍
03/22/2017 +2 days 🔍
07/27/2018 +491 days 🔍
07/27/2018 +0 days 🔍
07/28/2018 +1 days 🔍
09/02/2024 +2227 days 🔍

Sourcesinfo

Advisory: FEDORA-2017-788129b61c
Researcher: Colin
Organization: Red Hat
Status: Not defined
Confirmation: 🔍

CVE: CVE-2017-2623 (🔍)
SecurityFocus: 96558 - Project Atomic rpm-ostree CVE-2017-2623 Security Bypass Vulnerability

Entryinfo

Created: 07/28/2018 07:34 AM
Updated: 09/02/2024 12:46 AM
Changes: 07/28/2018 07:34 AM (73), 03/10/2020 08:46 PM (5), 04/27/2023 11:45 AM (4), 04/27/2023 11:52 AM (12), 04/27/2023 12:00 PM (1), 09/02/2024 12:46 AM (17)
Complete: 🔍
Cache ID: 18:2FD:40

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