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7.5

Android versions before 4.4 weak random number generator

CVE-2013-7373 · published 12 years ago
Summary

Devices running Android older than version 4.4 use a random-number generator that is not properly initialized. This can make encryption keys and other security data easier for attackers to guess, potentially exposing sensitive information. Upgrade the operating system to a newer version or apply the vendor's security updates to fix the issue.

What to do

The CVE record does not list a fixed version. Check the vendor's site or the advisory links below - a fix may already be released.

Affected software
VendorProductAffected versions
google android <= 4.3.1
1.0
1.1
1.5
1.6
2.0
2.0.1
2.1
2.2
2.2.1
2.2.2
2.2.3
26 more version ranges
cpe:2.3:o:google:android:*:*:*:*:*:*:*:*
Original advisory text
Android before 4.4 does not properly arrange for seeding of the OpenSSL PRNG, which makes it easier for attackers to defeat cryptographic protection mechanisms by leveraging use of the PRNG within ...
Android before 4.4 does not properly arrange for seeding of the OpenSSL PRNG, which makes it easier for attackers to defeat cryptographic protection mechanisms by leveraging use of the PRNG within multiple applications.
References
Fix within
Internet-facing 14 days
Internal 60 days
  • Not known to be exploited
  • Can be exploited automatically (estimated)
  • Gives an attacker partial control (estimated)
Severity
7.5 High
Exploitation
1% chance of attack within 30 days
Type
CWE-200Information Exposure
Timeline
Published29 Apr 2014
Updated4 Nov 2026
First seen29 Sep 2026
Sources
CVE-2013-7373 · NVD
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