Barebox
CVE-2021-37848
HIGH
Vulnerability Assessment
| Weakness |
CWE
ASVS 5.0
V6 - Authentication Timing-safe comparisons
|
| Impact | CVSS score of 7.5 (HIGH). Attack characteristics: network attack vector, low complexity, no privileges required, no user interaction not required. Public proof-of-concept exploit code is available. |
| Exploit ScenarioDerived | This vulnerability can be exploited remotely over the network. Successful exploitation could compromise the high-severity affected system. |
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Alert meAnalysisAI
common/password.c in Pengutronix barebox through 2021.07.0 leaks timing information because strncmp is used during hash comparison. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available.
RemediationAI
A vendor patch is available. Apply the latest security update as soon as possible. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.
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Technical ContextAI · show details
This vulnerability is classified under CWE-203. common/password.c in Pengutronix barebox through 2021.07.0 leaks timing information because strncmp is used during hash comparison. Affected products include: Pengutronix Barebox. Version information: through 2021.07.0.
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Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
DescriptionNVD
common/password.c in Pengutronix barebox through 2021.07.0 leaks timing information because strncmp is used during hash comparison.
Threat Intelligence Overview
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
Information disclosure occurs when an application unintentionally exposes sensitive data that aids attackers in reconnaissance or directly compromises security.
Affected Products (CPE)NVD
crypto/digest.c in Pengutronix barebox through 2021.07.0 leaks timing information because memcmp is used during digest v
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Pengutronix barebox through 2019.08.1 has a remote buffer overflow in nfs_readlink_reply in net/nfs.c because a length f
Pengutronix Barebox through v2020.05.0 has an out-of-bounds read in nfs_read_reply in net/nfs.c because a field of an in
Memory corruption in the barebox bootloader's EFI PE loader (efi/loader/pe.c) affects all versions prior to 2026.04.0, a
A signature bypass vulnerability exists in the barebox bootloader's FIT (Flattened Image Tree) image verification mechan
Denial of service in the barebox bootloader (all versions up to and including 2026.04.0) lets an attacker on the same br
Infinite loop denial-of-service in barebox's ext4 directory parser allows an attacker who can supply a crafted filesyste
Out-of-bounds read vulnerabilities in barebox's ext4 extent parsing allow an attacker who can supply a malformed ext4 fi
NVD
CVE.org
EPSS
GitHub
Exploit-DB