Description
Off-by-one error in the _web_drawInRect:withFont:ellipsis:alignment:measureOnly function in WebKit in Safari in Apple iPhone 1.1.4 and 2.0 and iPod touch 1.1.4 and 2.0 allows remote attackers to cause a denial of service (browser crash) via a JavaScript alert call with an argument that lacks breakable characters and has a length that is a multiple of the memory page size, leading to an out-of-bounds read.
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.
Exploit-DB 1
- Apple iOS 1.1.4/2.0 / iPod 1.1.4/2.0 touch Safari WebKit - 'alert()' Remote Denial of Service EDB-32341 · dos · Sep 12, 2008 · verified
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
References
- 31061 vdb-entry
- 20080912 CORE-2008-0126: iPhone Safari JavaScript alert Denial of Service mailing-list
- http://www.coresecurity.com/content/iphone-safari-javascript-alert-denial-of-service
- 4264 third-party-advisory