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CVE-2013-4787

UnknownEPSS 62.40%

Last modified

CVE-2013-4787 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 62.40% chance of exploitation in the next 30 days.

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.

Metrics

EPSS Probability
62.40%

99.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
GoogleAndroid1.6
GoogleAndroid2.0
GoogleAndroid2.0.1
GoogleAndroid2.1
GoogleAndroid2.2
GoogleAndroid2.2.1
GoogleAndroid2.2.2
GoogleAndroid2.2.3
GoogleAndroid2.3
GoogleAndroid2.3.1
GoogleAndroid2.3.2
GoogleAndroid2.3.3
GoogleAndroid2.3.4
GoogleAndroid2.3.5
GoogleAndroid2.3.6
GoogleAndroid2.3.7
GoogleAndroid3.0
GoogleAndroid3.1
GoogleAndroid3.2
GoogleAndroid3.2.1
GoogleAndroid3.2.2
GoogleAndroid3.2.4
GoogleAndroid3.2.6
GoogleAndroid4.0
GoogleAndroid4.0.1
GoogleAndroid4.0.2
GoogleAndroid4.0.3
GoogleAndroid4.0.4
GoogleAndroid4.1
GoogleAndroid4.1.2
GoogleAndroid4.2

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2013-4787?
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.
How severe is CVE-2013-4787?
Severity scoring for CVE-2013-4787 is pending analysis. The EPSS model estimates a 62.40% probability of exploitation in the next 30 days.
How do I fix CVE-2013-4787?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST