CVE-2021-37848 : common/password.c in Pengutronix barebox through 2021.07.0 leaks timing informat

common/password.c in Pengutronix barebox through 2021.07.0 leaks timing information because strncmp is used during hash comparison.

Published 2021-08-02 20:15:08

Updated 2022-07-12 17:42:04

Source MITRE

View at NVD, CVE.org

Products affected by CVE-2021-37848

Pengutronix » Barebox
Versions up to, including, (<=) 2021.07.0
cpe:2.3:a:pengutronix:barebox:*:*:*:*:*:*:*:*
Matching versions

EPSS FAQ

0.36%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 72 %

Percentile, the proportion of vulnerabilities that are scored at or less

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
5.0	MEDIUM	AV:N/AC:L/Au:N/C:P/I:N/A:N	10.0	2.9	NIST
Access Vector: Network Access Complexity: Low Authentication: None Confidentiality Impact: Partial Integrity Impact: None Availability Impact: None
7.5	HIGH	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N	3.9	3.6	NIST
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: None Scope: Unchanged Confidentiality: High Integrity: None Availability: None

CWE-203 Observable Discrepancy

The product behaves differently or sends different responses under different circumstances in a way that is observable to an unauthorized actor, which exposes security-relevant information about the state of the product, such as whether a particular operation was successful or not.

Assigned by: nvd@nist.gov (Primary)

https://gist.github.com/gquere/816dfadbad98745090034100a8a651eb

barebox_advisory.md · GitHub
Exploit;Third Party Advisory

CVEs referencing this url
https://github.com/saschahauer/barebox/commit/a3337563c705bc8e0cf32f910b3e9e3c43d962ff

password: Use crypto_memneq() to compare hashes · saschahauer/barebox@a333756 · GitHub
Patch;Third Party Advisory

Jump to