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CVE-2013-7372

UnknownEPSS 2.34%

Last modified

CVE-2013-7372 is a vulnerability of currently unknown severity. The engineNextBytes function in classlib/modules/security/src/main/java/common/org/apache/harmony/security/provider/crypto/SHA1PRNG_SecureRandomImpl.java in the SecureRandom implementation in Apache Harmony through 6.0M3, as used in the Java Cryptography Architecture (JCA) in Android before 4.4 and other products, when no seed is provided by the user, uses an incorrect offset value, which makes it easier for attackers to defeat cryptographic protection mechanisms by leveraging the resulting PRNG predictability, as exploited in the wild against Bitcoin wallet applications in August 2013.. EPSS estimates a 2.34% chance of exploitation in the next 30 days.

Description

The engineNextBytes function in classlib/modules/security/src/main/java/common/org/apache/harmony/security/provider/crypto/SHA1PRNG_SecureRandomImpl.java in the SecureRandom implementation in Apache Harmony through 6.0M3, as used in the Java Cryptography Architecture (JCA) in Android before 4.4 and other products, when no seed is provided by the user, uses an incorrect offset value, which makes it easier for attackers to defeat cryptographic protection mechanisms by leveraging the resulting PRNG predictability, as exploited in the wild against Bitcoin wallet applications in August 2013.

Metrics

EPSS Probability
2.34%

81.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersionsUpdate
ApacheHarmony<= 6.0M3
GoogleAndroid<= 4.3.1—
GoogleAndroid4.0—
GoogleAndroid4.0.1—
GoogleAndroid4.0.2—
GoogleAndroid4.0.3—
GoogleAndroid4.0.4—
GoogleAndroid4.1—
GoogleAndroid4.1.2—
GoogleAndroid4.2—
GoogleAndroid4.2.1—
GoogleAndroid4.2.2—
GoogleAndroid4.3—

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2013-7372?
The engineNextBytes function in classlib/modules/security/src/main/java/common/org/apache/harmony/security/provider/crypto/SHA1PRNG_SecureRandomImpl.java in the SecureRandom implementation in Apache Harmony through 6.0M3, as used in the Java Cryptography Architecture (JCA) in Android before 4.4 and other products, when no seed is provided by the user, uses an incorrect offset value, which makes it easier for attackers to defeat cryptographic protection mechanisms by leveraging the resulting PRNG predictability, as exploited in the wild against Bitcoin wallet applications in August 2013.
How severe is CVE-2013-7372?
Severity scoring for CVE-2013-7372 is pending analysis. The EPSS model estimates a 2.34% probability of exploitation in the next 30 days.
How do I fix CVE-2013-7372?
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.

Are you affected by CVE-2013-7372?

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Source: NVD / NIST