CVE-2013-4787

35Vexday Risk Score

No sign of exploitation. It has a public proof of concept.

ssvc Attendepss 59%

from disclosure to weapon0 days

Published on NVDJul 9

1st PoCJul 3

exploitation probability

59%top 1% of all CVEs

observed exploitation

nono source reports it

1 public exploit(s)

Android 1.6 Donut through 4.2 Jelly Bean does not properly check cryptographic signatures for applications, which allows attackers to execute arbitrary code via an application package file (APK) that is modified in a way that does not violate the cryptographic signature, probably involving multiple entries in a Zip file with the same name in which one entry is validated but the other entry is installed, aka Android security bug 8219321 and the "Master Key" vulnerability.

Affected products

n/a · n/a

public PoCs found — 1✓ VexDay Proof

exploitdb✓ VexDay Proofwww.exploit-db.com/exploits/38627

⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.

References

http://bluebox.com/corporate-blog/bluebox-uncovers-android-master-key/http://review.cyanogenmod.org/#/c/45251/https://jira.cyanogenmod.org/browse/CYAN-1602 https://plus.google.com/113331808607528811927/posts/GxDA6111vYy http://www.osvdb.org/94773 http://www.securityfocus.com/bid/60952 http://www.zdnet.com/google-releases-fix-to-oems-for-blue-security-android-security-hole-7000017782/