CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
---|---|---|
7.6 | $0-$5k | 0.00 |
A vulnerability classified as critical has been found in Bouncy Castle BKS-V1 1.47. Affected is some unknown processing of the component HMAC Handler. The manipulation with an unknown input leads to a cryptographic issues vulnerability. CWE is classifying the issue as CWE-310. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:
Bouncy Castle BKS version 1 keystore (BKS-V1) files use an HMAC that is only 16 bits long, which can allow an attacker to compromise the integrity of a BKS-V1 keystore. All BKS-V1 keystores are vulnerable. Bouncy Castle release 1.47 introduces BKS version 2, which uses a 160-bit MAC.
The bug was discovered 03/19/2018. The weakness was disclosed 04/16/2018 by Will Dormann as confirmed advisory (CERT.org). The advisory is available at kb.cert.org. This vulnerability is traded as CVE-2018-5382 since 01/12/2018. The exploitability is told to be difficult. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. The technical details are unknown and an exploit is not available. This vulnerability is assigned to T1600 by the MITRE ATT&CK project.
The vulnerability was handled as a non-public zero-day exploit for at least 28 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 118185 (RHEL 7 : Satellite Server (RHSA-2018:2927)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Red Hat Local Security Checks and running in the context l.
Upgrading eliminates this vulnerability. A possible mitigation has been published 7 months after the disclosure of the vulnerability.
The vulnerability is also documented in the vulnerability database at Tenable (118185). The entries 104477, 110012, 113063 and 115808 are pretty similar.
Product
Vendor
Name
Version
CPE 2.3
CPE 2.2
CVSSv4
VulDB CVSS-B Score: 🔍VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 7.7VulDB Meta Temp Score: 7.6
VulDB Base Score: 5.6
VulDB Temp Score: 5.4
VulDB Vector: 🔍
VulDB Reliability: 🔍
NVD Base Score: 9.8
NVD Vector: 🔍
CVSSv2
AV | AC | Au | C | I | A |
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Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
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unlock | unlock | unlock | unlock | unlock | unlock |
unlock | unlock | unlock | unlock | unlock | unlock |
unlock | unlock | unlock | unlock | unlock | unlock |
VulDB Base Score: 🔍
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NVD Base Score: 🔍
Exploiting
Class: Cryptographic issuesCWE: CWE-310
ATT&CK: T1600
Local: No
Remote: Yes
Availability: 🔍
Status: Not defined
EPSS Score: 🔍
EPSS Percentile: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍
0-Day | unlock | unlock | unlock | unlock |
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Today | unlock | unlock | unlock | unlock |
Nessus ID: 118185
Nessus Name: RHEL 7 : Satellite Server (RHSA-2018:2927)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: UpgradeStatus: 🔍
Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍
Timeline
01/12/2018 🔍03/19/2018 🔍
03/19/2018 🔍
04/16/2018 🔍
04/16/2018 🔍
04/16/2018 🔍
10/16/2018 🔍
10/18/2018 🔍
02/28/2023 🔍
Sources
Advisory: RHSA-2018:2927Researcher: Will Dormann
Status: Confirmed
CVE: CVE-2018-5382 (🔍)
SecurityFocus: 103453 - Bouncy Castle BKS-V1 CVE-2018-5382 Security Weakness
See also: 🔍
Entry
Created: 04/16/2018 22:14Updated: 02/28/2023 09:47
Changes: 04/16/2018 22:14 (66), 01/25/2020 13:37 (10), 02/28/2023 09:47 (4)
Complete: 🔍
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