Divya21Raj

**Name of the Vulnerable Software and Affected Versions** Istio versions prior to 1.2.2 **Description** The issue is related to the mishandling of certain access tokens, which can lead to an error in Envoy, specifically "Epoch 0 terminated with an error". This is caused by a segmentation fault in the jwt authenticator.cc. **Recommendations** For versions prior to 1.2.2, update to version 1.2.2 or later to resolve the issue. As a temporary workaround, consider restricting access to the jwt authenticator.cc function until a patch is available.