CVE-2021-34693 : net/can/bcm.c in the Linux kernel through 5.12.10 allows local users to obtain s

net/can/bcm.c in the Linux kernel through 5.12.10 allows local users to obtain sensitive information from kernel stack memory because parts of a data structure are uninitialized.

Published 2021-06-14 22:15:21

Updated 2024-03-25 01:15:51

Source MITRE

View at NVD, CVE.org

Products affected by CVE-2021-34693

Debian » Debian Linux » Version: 9.0
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
Matching versions
Debian » Debian Linux » Version: 10.0
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
Matching versions
Linux » Linux Kernel
Versions from including (>=) 2.6.25 and up to, including, (<=) 5.12.10
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Matching versions

Exploit prediction scoring system (EPSS) score for CVE-2021-34693

EPSS FAQ

0.04%

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

~ 6 %

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

CVSS scores for CVE-2021-34693

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
2.1	LOW	AV:L/AC:L/Au:N/C:P/I:N/A:N	3.9	2.9	NIST
Access Vector: Local Access Complexity: Low Authentication: None Confidentiality Impact: Partial Integrity Impact: None Availability Impact: None
5.5	MEDIUM	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N	1.8	3.6	NIST
Attack Vector: Local Attack Complexity: Low Privileges Required: Low User Interaction: None Scope: Unchanged Confidentiality: High Integrity: None Availability: None

CWE ids for CVE-2021-34693

CWE-909 Missing Initialization of Resource

The product does not initialize a critical resource.

Assigned by: nvd@nist.gov (Primary)

References for CVE-2021-34693

https://lists.debian.org/debian-lts-announce/2021/07/msg00014.html

[SECURITY] [DLA 2713-1] linux security update
Mailing List;Third Party Advisory

CVEs referencing this url
https://www.debian.org/security/2021/dsa-4941

Debian -- Security Information -- DSA-4941-1 linux
Third Party Advisory

CVEs referencing this url
https://lore.kernel.org/netdev/trinity-87eaea25-2a7d-4aa9-92a5-269b822e5d95-1623609211076%403c-app-gmx-bs04/T/

[PATCH] can: bcm: fix infoleak in struct bcm_msg_head
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=5e87ddbe3942e27e939bdc02deb8579b0cbd8ecc

can: bcm: fix infoleak in struct bcm_msg_head - kernel/git/torvalds/linux.git - Linux kernel source tree
https://lore.kernel.org/netdev/trinity-87eaea25-2a7d-4aa9-92a5-269b822e5d95-1623609211076@3c-app-gmx-bs04/T/

[PATCH] can: bcm: fix infoleak in struct bcm_msg_head
Exploit;Patch;Vendor Advisory
https://lists.debian.org/debian-lts-announce/2021/07/msg00015.html

[SECURITY] [DLA 2714-1] linux-4.19 security update
Mailing List;Third Party Advisory

CVEs referencing this url
https://lists.debian.org/debian-lts-announce/2021/07/msg00016.html

[SECURITY] [DLA 2713-2] linux security update
Mailing List;Third Party Advisory

CVEs referencing this url
http://www.openwall.com/lists/oss-security/2021/06/15/1

oss-security - CVE-2021-34693: Infoleak in CAN BCM protocol in Linux kernel
Exploit;Mailing List;Patch;Third Party Advisory

Jump to

Vulnerability Details : CVE-2021-34693

Products affected by CVE-2021-34693

Exploit prediction scoring system (EPSS) score for CVE-2021-34693

CVSS scores for CVE-2021-34693

CWE ids for CVE-2021-34693

References for CVE-2021-34693