CVE-2012-1845

Use-after-free vulnerability in Google Chrome 17.0.963.66 and earlier allows remote attackers to bypass the DEP and ASLR protection mechanisms, and execute arbitrary code, via unspecified vectors, as demonstrated by VUPEN during a Pwn2Own competition at CanSecWest 2012. NOTE: the primary affected product may be clarified later; it was not identified by the researcher, who reportedly stated it really doesnt matter if its third-party code.

Weakness

The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory “belongs” to the code that operates on the new pointer.

Affected Software

Potential Mitigations

References

• http://pwn2own.zerodayinitiative.com/status.html
• http://twitter.com/vupen/statuses/177576000761237505
• http://www.forbes.com/sites/andygreenberg/2012/03/21/meet-the-hackers-who-sell-spies-the-tools-to-crack-your-pc-and-get-paid-six-figure-fees/
• http://www.zdnet.com/blog/security/pwn2own-2012-google-chrome-browser-sandbox-first-to-fall/10588
• https://exchange.xforce.ibmcloud.com/vulnerabilities/74323
• https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A14843
• http://pwn2own.zerodayinitiative.com/status.html
• http://twitter.com/vupen/statuses/177576000761237505
• http://www.forbes.com/sites/andygreenberg/2012/03/21/meet-the-hackers-who-sell-spies-the-tools-to-crack-your-pc-and-get-paid-six-figure-fees/
• http://www.zdnet.com/blog/security/pwn2own-2012-google-chrome-browser-sandbox-first-to-fall/10588
• https://exchange.xforce.ibmcloud.com/vulnerabilities/74323
• https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A14843