OpenWrt update for wolfSSL



Published: 2022-10-06 | Updated: 2022-10-30
Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2022-39173
CWE-ID CWE-119
Exploitation vector Network
Public exploit N/A
Vulnerable software
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Operating systems & Components / Operating system

Vendor openwrt.org

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Buffer overflow

EUVDB-ID: #VU67767

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-39173

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary error when processing TLS 1.3 protocol requests with session tickets. A remote attacker can send a specially crafted ClientHello packet to the affected server, trigger a buffer overflow and perform a denial of service (DoS) attack.


Mitigation

Install update from vendor's website.

Vulnerable software versions

OpenWrt: 15.05.1 - 21.02.2

External links

http://openwrt.org/advisory/2022-10-04-1


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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