How Many Unicorns Are in This Image? A Safety Evaluation Benchmark for
  Vision LLMs
Haoqin Tu Chenhang Cui Zijun Wang Yiyang Zhou Bingchen Zhao Junlin Han Wangchunshu Zhou Huaxiu Yao Cihang Xie
This work focuses on the potential of Vision LLMs (VLLMs) in visual
reasoning. Different from prior studies, we shift our focus from evaluating
standard performance to introducing a comprehensive safety evaluation suite,
covering both out-of-distribution (OOD) generalization and adversarial
robustness. For the OOD evaluation, we present two novel VQA datasets, each
with one variant, designed to test model performance under challenging
conditions. In exploring adversarial robustness, we propose a straightforward
attack strategy for misleading VLLMs to produce visual-unrelated responses.
Moreover, we assess the efficacy of two jailbreaking strategies, targeting
either the vision or language component of VLLMs. Our evaluation of 21 diverse
models, ranging from open-source VLLMs to GPT-4V, yields interesting
observations: 1) Current VLLMs struggle with OOD texts but not images, unless
the visual information is limited; and 2) These VLLMs can be easily misled by
deceiving vision encoders only, and their vision-language training often
compromise safety protocols. We release this safety evaluation suite at
https://github.com/UCSC-VLAA/vllm-safety-benchmark.