SonicWALL SonicOS/SonicOSv TLS CBC Cipher risky encryption

Summaryinfo

A vulnerability was found in SonicWALL SonicOS and SonicOSv and classified as critical. Affected by this issue is some unknown functionality of the component TLS CBC Cipher. The manipulation results in risky encryption. This vulnerability was named CVE-2019-7477. The attack may be performed from remote. There is no available exploit.

Detailsinfo

A vulnerability was found in SonicWALL SonicOS and SonicOSv (Firewall Software) (the affected version is unknown). It has been classified as critical. Affected is an unknown code of the component TLS CBC Cipher. The manipulation with an unknown input leads to a risky encryption vulnerability. CWE is classifying the issue as CWE-327. The product uses a broken or risky cryptographic algorithm or protocol. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

A vulnerability in SonicWall SonicOS and SonicOSv TLS CBC Cipher allow remote attackers to obtain sensitive plaintext data when CBC cipher suites are enabled. This vulnerability affected SonicOS Gen 5 version 5.9.1.10 and earlier, Gen 6 version 6.2.7.3, 6.5.1.3, 6.5.2.2, 6.5.3.1, 6.2.7.8, 6.4.0.0, 6.5.1.8, 6.0.5.3-86o and SonicOSv 6.5.0.2-8v_RC363 (VMWARE), 6.5.0.2.8v_RC367 (AZURE), SonicOSv 6.5.0.2.8v_RC368 (AWS), SonicOSv 6.5.0.2.8v_RC366 (HYPER_V).

The bug was discovered 04/01/2019. The weakness was presented 04/02/2019 (Website). The advisory is available at psirt.global.sonicwall.com. This vulnerability is traded as CVE-2019-7477 since 02/06/2019. The exploitability is told to be difficult. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. The technical details are unknown and an exploit is not available. This vulnerability is assigned to T1600 by the MITRE ATT&CK project.

The vulnerability was handled as a non-public zero-day exploit for at least 1 days. During that time the estimated underground price was around $0-$5k.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

See VDB-132737 and VDB-132736 for similar entries. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

• Firewall Software

Vendor

• SonicWALL

Name

• SonicOS
• SonicOSv

License

• commercial

Website

• Vendor: https://www.sonicwall.com/

CPE 2.3info

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Entryinfo

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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