SUSE update for bcm43xx-firmware



Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2019-15126
CWE-ID CWE-326
Exploitation vector Local network
Public exploit Public exploit code for vulnerability #1 is available.
Vulnerable software
 SUSE Linux Enterprise Server
Operating systems & Components / Operating system

bcm43xx-firmware
Operating systems & Components / Operating system package or component

Vendor SUSE

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Inadequate Encryption Strength

EUVDB-ID: #VU25646

Risk: Low

CVSSv4.0: 5.7 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:P/U:Clear]

CVE-ID: CVE-2019-15126

CWE-ID: CWE-326 - Inadequate Encryption Strength

Exploit availability: Yes

Description

The vulnerability allows a remote attacker to decrypt Wi-Fi frames.

The vulnerability exists because after an affected device handles a disassociation event it can send a limited number of Wi-Fi frames encrypted with a static, weak Pairwise Temporal Key (PTK). A remote attacker on the local network can acquire these frames and decrypt them with the static PTK without the knowledge of the security session establishment used to secure the Wi-Fi network.

Mitigation

Update the affected package bcm43xx-firmware to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Server: 12-SP4-LTSS - 12-SP5

bcm43xx-firmware: before 20180314-4.6.1

CPE2.3 External links

https://www.suse.com/support/update/announcement/2021/suse-su-20214003-1/


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.



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