The image_verify function in platform/msm_shared/image_verify.c in the Little Kernel (LK) bootloader, as distributed with Qualcomm Innovation Center (QuIC) Android contributions for MSM devices and other products, does not check whether a certain digest size is consistent with the RSA_public_decrypt API specification, which makes it easier for attackers to bypass boot-image authentication requirements via trailing data.

References

• https://nvd.nist.gov/vuln/detail/CVE-2014-0973
• https://www.codeaurora.org/projects/security-advisories/incomplete-signature-parsing-during-boot-image-authentication-leads-to-signature-forgery-cve-2014-0973
• http://source.android.com/security/bulletin/2016-07-01.html