"Zendesk Vulnerability Could Have Given Hackers Access to Customer Data"

Security researchers at Varonis stated that an SQL injection vulnerability in Zendesk Explore could have allowed a threat actor to leak Zendesk customer account information.  Zendesk Explore is the analytics and reporting service of Zendesk, a popular customer support software-as-a-service solution.  According to the researchers, two vulnerabilities in Zendesk Explore could have allowed an attacker to access conversations, comments, email addresses, tickets, and other information stored in Zendesk accounts with Explore enabled.  The researchers noted that the two issues were reported to Zendesk and patched before they could have any impact on customer data.  The researchers said that they have no evidence that any Zendesk Explore customer accounts were exploited, and Zendesk started working on a fix the same day it was reported.  While analyzing Zendesk’s products, the researchers discovered that they use multiple GraphQL APIs and that one of the object types in Zendesk Explore contained multiple nested encodings.  Further investigation revealed the presence of a plaintext XML document containing name attributes vulnerable to an SQL injection attack.  The researchers noted that they discovered a logical access flaw that allowed them to “steal data from any table in the target Zendesk account’s RDS, no SQLi required.”  The researchers stated that Zendesk quickly resolved the issue, and there is no longer this flaw in Explore.  No action is needed from current customers to fix the vulnerabilities discovered by the researchers.  

SecurityWeek reports: "Zendesk Vulnerability Could Have Given Hackers Access to Customer Data"