Linux Kernel up to 5.12.7 kernel/bpf/verifier.c alu_limit out-of-bounds write
CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
---|---|---|
8.8 | $5k-$25k | 0.00 |
A vulnerability classified as critical has been found in Linux Kernel up to 5.12.7 (Operating System). This affects the function alu_limit
of the file kernel/bpf/verifier.c. The manipulation with an unknown input leads to a out-of-bounds write vulnerability. CWE is classifying the issue as CWE-787. The product writes data past the end, or before the beginning, of the intended buffer. This is going to have an impact on confidentiality, integrity, and availability.
The weakness was shared 05/27/2021. It is possible to read the advisory at openwall.com. This vulnerability is uniquely identified as CVE-2021-33200. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 05/27/2021).
There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.
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: 8.8VulDB Meta Temp Score: 8.8
VulDB Base Score: 8.8
VulDB Temp Score: 8.8
VulDB Vector: 🔍
VulDB Reliability: 🔍
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: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍
Exploiting
Class: Out-of-bounds writeCWE: CWE-787 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍
Local: No
Remote: Yes
Availability: 🔍
Status: Not defined
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: no mitigation knownStatus: 🔍
0-Day Time: 🔍
Timeline
05/19/2021 🔍05/27/2021 🔍
05/27/2021 🔍
05/30/2021 🔍
Sources
Vendor: kernel.orgAdvisory: openwall.com
Status: Not defined
CVE: CVE-2021-33200 (🔍)
Entry
Created: 05/27/2021 17:00Updated: 05/30/2021 10:22
Changes: 05/27/2021 17:00 (39), 05/30/2021 10:22 (2)
Complete: 🔍
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