CVE-2011-4862

Description

Buffer overflow in libtelnet/encrypt.c in telnetd in FreeBSD 7.3 through 9.0, MIT Kerberos Version 5 Applications (aka krb5-appl) 1.0.2 and earlier, Heimdal 1.5.1 and earlier, GNU inetutils, and possibly other products allows remote attackers to execute arbitrary code via a long encryption key, as exploited in the wild in December 2011.

Read the notes from the security team

Status

Show unmaintained releases

Package	Ubuntu Release	Status
inetutils	17.04 zesty	Not affected
	16.10 yakkety	Not affected
	16.04 LTS xenial	Not affected
	15.10 wily	Not affected
	15.04 vivid	Not affected
	14.10 utopic	Not affected
	14.04 LTS trusty	Not affected
	13.10 saucy	Ignored end of life
	13.04 raring	Ignored end of life
	12.10 quantal	Ignored end of life
	12.04 LTS precise	Not affected
	11.10 oneiric	Ignored end of life
	11.04 natty	Ignored end of life
	10.10 maverick	Ignored end of life
	10.04 LTS lucid	Ignored end of life
	8.04 LTS hardy	Ignored end of life
heimdal	17.04 zesty	Not affected
	16.10 yakkety	Not affected
	16.04 LTS xenial	Not affected
	15.10 wily	Not affected
	15.04 vivid	Not affected
	14.10 utopic	Not affected
	14.04 LTS trusty	Not affected
	13.10 saucy	Ignored end of life
	13.04 raring	Ignored end of life
	12.10 quantal	Ignored end of life
	12.04 LTS precise	Not affected
	11.10 oneiric	Ignored end of life
	11.04 natty	Ignored end of life
	10.10 maverick	Ignored end of life
	10.04 LTS lucid	Ignored end of life
	8.04 LTS hardy	Ignored end of life
krb5	17.04 zesty	Not affected
	16.10 yakkety	Not affected
	16.04 LTS xenial	Not affected
	15.10 wily	Not affected
	15.04 vivid	Not affected
	14.10 utopic	Not affected
	14.04 LTS trusty	Not affected
	13.10 saucy	Not affected
	13.04 raring	Not affected
	12.10 quantal	Not affected
	12.04 LTS precise	Not affected
	11.10 oneiric	Not affected
	11.04 natty	Not affected
	10.10 maverick	Not affected
	10.04 LTS lucid	Not affected
	8.04 LTS hardy	Ignored end of life
krb5-appl	17.04 zesty	Not in release
	16.10 yakkety	Not in release
	16.04 LTS xenial	Not in release
	15.10 wily	Not in release
	15.04 vivid	Not in release
	14.10 utopic	Not in release
	14.04 LTS trusty	Not in release
	13.10 saucy	Ignored end of life
	13.04 raring	Ignored end of life
	12.10 quantal	Ignored end of life
	12.04 LTS precise	Ignored end of life
	11.10 oneiric	Ignored end of life
	11.04 natty	Ignored end of life
	10.10 maverick	Ignored end of life
	10.04 LTS lucid	Ignored end of life
	8.04 LTS hardy	Not in release

Notes

jdstrand

from DSA: "Kerberos support for telnetd contains a pre-authentication buffer overflow". did not check if this is protected via stack-protector yet

mdeslaur

all affected code is in universe binaries

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package	Patch details
inetutils	Vendor: http://www.debian.org/security/2011/dsa-2373
heimdal	Vendor: http://www.debian.org/security/2011/dsa-2372
krb5	Vendor: http://www.debian.org/security/2011/dsa-2375
krb5-appl	Vendor: http://www.debian.org/security/2011/dsa-2375

References

Other references

https://www.cve.org/CVERecord?id=CVE-2011-4862