Home » Security » Heartbleed Bug Information

Dire warnings about Heartbleed, a serious internet security risk affecting millions of websites, is echoing across the internet today. Described as a flaw in OpenSSL, the open source encryption technology used by the vast majority of web servers.

The Heartbleed bug is a particularly nasty bug. It allows an attacker to read up to 64KB of memory, and the security researchers have said:

“Without using any privileged information or credentials we were able steal from ourselves the secret keys used for our X.509 certificates, user names and passwords, instant messages, emails and business critical documents and communication.”

heartbeet

Alleged Yahoo user credentials visible due to Heartbleed (source: Mark Loman).

The problem is fairly simple: there’s a tiny vulnerability — a simple missing bounds check — in the code that handles TLS ‘heartbeat’ messages. By abusing this mechanism, an attacker can request that a running TLS server hand over a relatively large slice (up to 64KB) of its private memory space. Since this is the same memory space where OpenSSL also stores the server’s private key material, an attacker can potentially obtain

  • long-term server private keys
  • TLS session keys
  • confidential data like passwords
  • session ticket keys

Comments

comments

Latest

tech support 10 Tools Every Computer Tech Needs
skype Using Skype To Replace Landline Phone
riff Bеѕt VR Apps and Games for Meditation
google pixel The World Is On Your Palm Now, Go Mobile
security lock Top In-Demand Skills For Cloud Computing

Tech Geek Today

Tech Geek Today

MonTueWedThuFriSatSun
      1
9101112131415
16171819202122
23242526272829
3031     
    123
45678910
11121314151617
252627282930 
       
 123456
78910111213
14151617181920
21222324252627
28293031   
       

Subscribe To The Technology Geek

Archives