Linux Kernel up to 5.11.x Spectre Mitigation kernel/bpf/verifier.c information disclosure
CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
---|---|---|
3.6 | $0-$5k | 0.00 |
A vulnerability, which was classified as problematic, was found in Linux Kernel up to 5.11.x (Operating System). Affected is an unknown functionality of the file kernel/bpf/verifier.c of the component Spectre Mitigation Handler. The manipulation with an unknown input leads to a information disclosure vulnerability. CWE is classifying the issue as CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. This is going to have an impact on confidentiality.
The weakness was shared 04/22/2021. The advisory is shared for download at openwall.com. This vulnerability is traded as CVE-2021-29155. Technical details and a private exploit are known. The MITRE ATT&CK project declares the attack technique as T1592.
It is declared as proof-of-concept.
Applying a patch is able to eliminate this problem. The bugfix is ready for download at openwall.com.
Product
Type
Vendor
Name
Version
License
CPE 2.3
CPE 2.2
CVSSv4
VulDB CVSS-B Score: 🔍VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 4.0VulDB Meta Temp Score: 3.9
VulDB Base Score: 2.5
VulDB Temp Score: 2.3
VulDB Vector: 🔍
VulDB Reliability: 🔍
NVD Base Score: 5.5
NVD Vector: 🔍
CVSSv2
AV | AC | Au | C | I | A |
---|---|---|---|---|---|
💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
---|---|---|---|---|---|
unlock | unlock | unlock | unlock | unlock | unlock |
unlock | unlock | unlock | unlock | unlock | unlock |
unlock | unlock | unlock | unlock | unlock | unlock |
VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍
NVD Base Score: 🔍
Exploiting
Class: Information disclosureCWE: CWE-200 / CWE-284 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍
Local: Yes
Remote: No
Availability: 🔍
Access: Private
Status: Proof-of-Concept
EPSS Score: 🔍
EPSS Percentile: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍
0-Day | unlock | unlock | unlock | unlock |
---|---|---|---|---|
Today | unlock | unlock | unlock | unlock |
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: PatchStatus: 🔍
0-Day Time: 🔍
Patch: openwall.com
Timeline
03/25/2021 🔍04/22/2021 🔍
04/22/2021 🔍
04/28/2021 🔍
Sources
Vendor: kernel.orgAdvisory: openwall.com
Status: Confirmed
CVE: CVE-2021-29155 (🔍)
scip Labs: https://www.scip.ch/en/?labs.20161013
Entry
Created: 04/22/2021 07:59Updated: 04/28/2021 08:43
Changes: 04/22/2021 07:59 (43), 04/23/2021 16:19 (2), 04/28/2021 08:43 (18)
Complete: 🔍
Cache ID: 3:338:103
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