CVE-2013-7372

medium Apache
CVSS v3 Base Score
5.0
AV:N/AC:L/Au:N/C:N/I:P/A:N
EPSS Score
0.7%
Exploitation probability in 30 days
Top 28% most likely to be exploited
Attack Characteristics
Attack Vector
Network
Attack Complexity
Low
Confidentiality
None
Integrity
P
Availability
None
Published: April 29, 2014 (4398 days ago)
Last Modified: May 6, 2026
Vendor: Apache
Source: NVD

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.

CWE

CWE-310

Affected Products

apache harmonygoogle android

References

🔗 android-developers.blogspot.com.au 🔗 www.nds.rub.de 🔗 android.googlesource.com 🔗 bitcoin.org 🔗 android-developers.blogspot.com.au