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Zendesk Vulnerability Might Have Given Hackers Entry to Buyer Information

By Ionut Arghire on November 15, 2022

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An SQL injection vulnerability in Zendesk Discover might have allowed a menace actor to leak Zendesk buyer account info, information safety agency Varonis stories.

Zendesk Discover is the analytics and reporting service of Zendesk, a well-liked buyer assist software-as-a-service resolution.

In keeping with Varonis, two vulnerabilities in Zendesk Discover might have allowed an attacker to entry conversations, feedback, e mail addresses, tickets, and different info saved in Zendesk accounts with Discover enabled.

The 2 points, nonetheless, had been reported to Zendesk and patched earlier than they might have any impression on buyer information.

“There isn’t a proof that any Zendesk Discover buyer accounts had been exploited, and Zendesk began engaged on a repair the identical day it was reported. The corporate fastened a number of bugs in lower than one workweek with zero buyer motion required,” Varonis stories.

An attacker seeking to exploit these flaws would first must register for the ticketing service of the meant sufferer’s Zendesk account, as an exterior person.

Profitable exploitation, nonetheless, required Zendesk Discover to be enabled. By default, it’s disabled, albeit being marketed as a requirement for analytics.

Whereas analyzing Zendesk’s merchandise, Varonis found that they use a number of GraphQL APIs, and that one of many object sorts in Zendesk Discover contained a number of nested encodings.

Additional investigation revealed the presence of a plaintext XML doc containing title attributes susceptible to an SQL injection assault.

“We had been capable of extract the record of tables from Zendesk’s RDS occasion and proceed to exfiltrate all the knowledge saved within the database, together with e mail addresses of customers, leads, and offers from the CRM, dwell agent conversations, tickets, assist middle articles, and extra,” Varonis says.

Digging deeper, Varonis’ researchers found a logical entry flaw that allowed them to “steal information from any desk within the goal Zendesk account’s RDS, no SQLi required.”

“Zendesk rapidly resolved the problem and there’s no longer this flaw in Discover. No motion is required from present prospects,” Varonis concludes.

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