Huawei CloudLink Phone 7900 denial of service vulnerability [CVE-2019-5280]

CVE Number – CVE-2019-5280

Huawei CloudLink Phone 7900 is vulnerable to a denial of service attack, caused by improper validation of specific parameters of the TLS server certificate in the SIP TLS module.

By using man-in-the-middle attack techniques, a remote attacker could exploit this vulnerability to cause phones to register abnormally and affect the availability of IP phones.

Affected Version – V600R019C10

Resolved Product and Version – V600R019C10SPC200

Further details – https://www.huawei.com/en/psirt/security-advisories/huawei-sa-20190724-01-7900-en

Jason Davies

UK based technology professional, with an interest in computer security and telecoms.

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