Pengutronix Barebox up to 2021.07.0 common/password.c strncmp timing discrepancy
CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
---|---|---|
2.5 | $0-$5k | 0.00 |
A vulnerability, which was classified as problematic, has been found in Pengutronix Barebox up to 2021.07.0. This issue affects the function strncmp
of the file common/password.c. The manipulation with an unknown input leads to a timing discrepancy vulnerability. Using CWE to declare the problem leads to CWE-208. Two separate operations in a product require different amounts of time to complete, in a way that is observable to an actor and reveals security-relevant information about the state of the product, such as whether a particular operation was successful or not. Impacted is confidentiality.
The weakness was disclosed 08/03/2021 as a3337563c705bc8e0cf32f910b3e9e3c43d962ff. The advisory is shared at github.com. The identification of this vulnerability is CVE-2021-37848. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1592 for this issue.
Applying a patch is able to eliminate this problem. The bugfix is ready for download at github.com.
Product
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: 2.6VulDB Meta Temp Score: 2.5
VulDB Base Score: 2.6
VulDB Temp Score: 2.5
VulDB Vector: 🔍
VulDB Reliability: 🔍
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: 🔍
Exploiting
Class: Timing discrepancyCWE: CWE-208 / CWE-203 / CWE-200
CAPEC: 🔍
ATT&CK: 🔍
Local: No
Remote: Partially
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: PatchStatus: 🔍
0-Day Time: 🔍
Patch: github.com
Timeline
08/02/2021 🔍08/03/2021 🔍
08/03/2021 🔍
08/07/2021 🔍
Sources
Advisory: a3337563c705bc8e0cf32f910b3e9e3c43d962ffStatus: Confirmed
CVE: CVE-2021-37848 (🔍)
Entry
Created: 08/03/2021 12:15Updated: 08/07/2021 08:44
Changes: 08/03/2021 12:15 (40), 08/07/2021 08:44 (2)
Complete: 🔍
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