ntp: denial of service
| Package(s): | ntp | CVE #(s): | CVE-2015-3405 | ||||||||||||||||||||||||||||||||||||
| Created: | April 28, 2015 | Updated: | April 29, 2015 | ||||||||||||||||||||||||||||||||||||
| Description: | From the Red Hat bugzilla:
A flaw was found in the way the ntp-keygen utility generated MD5 symmetric keys on big-endian systems. This could possibly allow an attacker to guess generated MD5 keys that could then be used to spoof an NTP client or server. If the lowest byte of the temp variable is outside of the printable characters range (between 0x20 and 0x7f), the ntp-keygen utility enters an infinite loop. However, if the temp variable is within the aforementioned range, the generated MD5 key will consist of 20 identical characters, meaning only 93 possible keys can be generated. | ||||||||||||||||||||||||||||||||||||||
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