telnetd in GNU Inetutils up to and including 2.3, MIT krb5-appl up to and including 1.0.3, and derivative works has a NULL pointer dereference via 0xff 0xf7 or 0xff 0xf8. In a typical installation, the telnetd application would crash but the telnet service would remain available through inetd. However, if the telnetd application has many crashes within a short time interval, the telnet service would become unavailable after inetd logs a "telnet/tcp server failing (looping), service terminated" error. NOTE: MIT krb5-appl is not supported upstream but is shipped by a few Linux distributions. The affected code was removed from the supported MIT Kerberos 5 (aka krb5) product many years ago, at version 1.8.
| Vulnerable Product | Search on Vulmon | Subscribe to Product |
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gnu inetutils |
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mit kerberos 5 |
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debian debian linux 10.0 |
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netkit-telnet project netkit-telnet |
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