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5.0

Safari before version 4 may let sites track users

CVE-2009-1696 · published 17 years ago
Summary

Older Safari browsers (versions before 4) generate random numbers that are easy to guess. This lets a website identify and follow a visitor’s actions while they browse. Updating to a newer version of Safari removes the risk.

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
apple safari 0.9
1.0
<= 4.0_beta
0.8
1.0.3
1.1
1.2
1.3
1.3.1
1.3.2
2.0
2.0.2
14 more version ranges
cpe:2.3:a:apple:safari:0.9:*:mac:*:*:*:*:*
Original advisory text
WebKit in Apple Safari before 4.0, iPhone OS 1.0 through 2.2.1, and iPhone OS for iPod touch 1.1 through 2.2.1 uses predictable random numbers in JavaScript applications, which makes it easier for ...
WebKit in Apple Safari before 4.0, iPhone OS 1.0 through 2.2.1, and iPhone OS for iPod touch 1.1 through 2.2.1 uses predictable random numbers in JavaScript applications, which makes it easier for remote web servers to track the behavior of a Safari user during a session.
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
5.0 Medium
Exploitation
2% chance of attack within 30 days
Type
CWE-310Cryptographic Issues
Timeline
Published10 Jun 2009
Updated29 Oct 2026
First seen29 Sep 2026
Sources
CVE-2009-1696 · NVD
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