CVE-2021-42739

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.

Summary:

Reference Links(if available):

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=35d2969ea3c7d32aee78066b1f3cf61a0d935a4e

https://seclists.org/oss-sec/2021/q2/46

https://lists.fedoraproject.org/archives/list/[email protected]/message/6EHZNHNHRLPC2NJKUDS5PJG5AGRYJVJN/

https://lists.fedoraproject.org/archives/list/[email protected]/message/AOWGMZ2MJFUGNA5QSD5JF4QHIC4URATS/

https://lists.fedoraproject.org/archives/list/[email protected]/message/CKMQEOEESIO3GMHAOL3NYS36FER6UTWA/

CVSS Score (if available)

v2: / MEDIUMAV:L/AC:L/Au:N/C:P/I:P/A:P

v3: / HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Links to Exploits(if available)

Tags: CVE, CVE-2021-42739, Mailing List, MISC, vulnerability

CVE-2021-42739

Summary:

Reference Links(if available):

CVSS Score (if available)

Links to Exploits(if available)

[LOCKBIT3] – Ransomware Victim: acwlaw[.]com

Cobalt Strike Beacon Detected – 47[.]236[.]53[.]118:80

Cobalt Strike Beacon Detected – 198[.]199[.]122[.]34:2087

Cobalt Strike Beacon Detected – 121[.]40[.]112[.]176:8087

Cobalt Strike Beacon Detected – 134[.]175[.]248[.]97:80

Summary:

Reference Links(if available):

CVSS Score (if available)

Links to Exploits(if available)

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[LOCKBIT3] – Ransomware Victim: acwlaw[.]com

Cobalt Strike Beacon Detected – 47[.]236[.]53[.]118:80

Cobalt Strike Beacon Detected – 198[.]199[.]122[.]34:2087

Cobalt Strike Beacon Detected – 121[.]40[.]112[.]176:8087

Cobalt Strike Beacon Detected – 134[.]175[.]248[.]97:80