“In my previous post on Yahoobleed #1 (YB1), we saw how an uninitialized memory vulnerability could lead to disclosure of private images belonging to other users. The resulting leaked memory bytes were subject to JPEG compression, which is not a problem for image theft, but is somewhat lacking if we wanted to steal memory content other than images.” states Chris Evans.
“In this post, we explore an alternative *bleed class vulnerability in Yahoo! thumbnailing servers. Let’s call it Yahoobleed #2 (YB2). We’ll get around the (still present) JPEG compression issue to exfiltrate raw memory bytes. With subsequent usage of the elite cyberhacking tool “strings”, we discover many wonders.
Yahoo! fixed YB2 at the same time as YB1, by retiring ImageMagick.”
Necessary cookies are absolutely essential for the website to function properly. This category only includes cookies that ensures basic functionalities and security features of the website. These cookies do not store any personal information.
Any cookies that may not be particularly necessary for the website to function and is used specifically to collect user personal data via analytics, ads, other embedded contents are termed as non-necessary cookies. It is mandatory to procure user consent prior to running these cookies on your website.