Vulnerability Details : CVE-2021-42739
Potential exploit
The firewire subsystem in the Linux kernel through 5.14.13 has a buffer overflow related to drivers/media/firewire/firedtv-avc.c and drivers/media/firewire/firedtv-ci.c, because avc_ca_pmt mishandles bounds checking.
Vulnerability category: OverflowMemory Corruption
Products affected by CVE-2021-42739
- cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
- cpe:2.3:a:oracle:communications_cloud_native_core_policy:22.2.0:*:*:*:*:*:*:*
- cpe:2.3:a:oracle:communications_cloud_native_core_binding_support_function:22.1.3:*:*:*:*:*:*:*
- cpe:2.3:a:oracle:communications_cloud_native_core_network_exposure_function:22.1.1:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*
- cpe:2.3:a:starwindsoftware:starwind_san_\&_nas:v8r12:*:*:*:*:*:*:*
- cpe:2.3:a:starwindsoftware:starwind_virtual_san:v8r13:14338:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-42739
0.02%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 3 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-42739
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
4.6
|
MEDIUM | AV:L/AC:L/Au:N/C:P/I:P/A:P |
3.9
|
6.4
|
NIST | |
|
6.7
|
MEDIUM | CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H |
0.8
|
5.9
|
NIST |
CWE ids for CVE-2021-42739
-
The product writes data past the end, or before the beginning, of the intended buffer.Assigned by: nvd@nist.gov (Primary)
References for CVE-2021-42739
-
https://lore.kernel.org/linux-media/YHaulytonFcW+lyZ@mwanda/
[PATCH] media: firewire: firedtv-avc: fix a buffer overflow in avc_ca_pmt() - Dan CarpenterPatch;Vendor Advisory
-
https://seclists.org/oss-sec/2021/q2/46
oss-sec: Linux kernel: a heap buffer overflow in firedtv driver
-
https://lore.kernel.org/linux-media/YHaulytonFcW+lyZ%40mwanda/
[PATCH] media: firewire: firedtv-avc: fix a buffer overflow in avc_ca_pmt() - Dan Carpenter
-
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=35d2969ea3c7d32aee78066b1f3cf61a0d935a4e
kernel/git/torvalds/linux.git - Linux kernel source tree
-
https://www.starwindsoftware.com/security/sw-20220804-0001/
CVE-2021-42739 Linux kernel vulnerability in StarWind productsThird Party Advisory
-
https://bugzilla.redhat.com/show_bug.cgi?id=1951739
1951739 – (CVE-2021-42739) CVE-2021-42739 kernel: Heap buffer overflow in firedtv driverIssue Tracking;Mitigation;Third Party Advisory
-
https://www.oracle.com/security-alerts/cpujul2022.html
Oracle Critical Patch Update Advisory - July 2022Patch;Third Party Advisory
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