CVE-2013-4787 Security feature bypass in n/a
Attackers can execute arbitrary code by installing a malicious APK that bypasses Android's cryptographic signature verification via Zip file manipulation.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2013-4787?
CVE-2013-4787 is a critical vulnerability in Google Android, published on 9 Jul 2013. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
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.
Weakness: CWE-310
Which versions are affected by CVE-2013-4787?
It affects 1 product.
Products include Google Android.
How do I fix CVE-2013-4787?
No fix has been published for CVE-2013-4787 yet. Limit exposure of the affected software until one is available.
Is CVE-2013-4787 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2013-4787 exists.
Public exploit code: 1 Exploit-DB entry.
Other vulnerabilities in Google Android
Sources
Also known as GHSA-jvm8-c647-56v7.