Headline
CVE-2023-49094: SSRF in symbolicator
Symbolicator is a symbolication service for native stacktraces and minidumps with symbol server support. An attacker could make Symbolicator send arbitrary GET HTTP requests to internal IP addresses by using a specially crafted HTTP endpoint. The response could be reflected to the attacker if they have an account on Sentry instance. The issue has been fixed in the release 23.11.2.
Impact
Symbolicator is a service used in Sentry. An attacker could make Symbolicator send GET HTTP requests to arbitrary URLs with internal IP addresses by using a specially crafted HTTP endpoint. The responses of those requests could be exposed via Symbolicator’s API. In affected Sentry instances, the data could be exposed through the Sentry API and user interface if the attacker has a registered account.
Patches
The issue has been fixed in Symbolicator release 23.11.2, Sentry self-hosted release 23.11.2, and has already been mitigated on sentry.io on November 27.
Workaround
Please update Symbolicator and Sentry self-hosted. If updating is not possible, the following can be done to mitigate the issue:
- Disable JS processing by toggling the option “Allow JavaScript Source Fetching” in Organization Settings > Security & Privacy.
- Disable all untrusted public repositories under Project Settings > Debug Files.
Alternatively, if JavaScript and native symbolication are not required, disable Symbolicator completely in config.yml by specifying:
symbolicator.enabled: false
References
#1332