CVE-2013-0336: Input Validation
First published: Thu Feb 21 2013(Updated: )
Sumit Bose discovered that FreeIPA's directory server (dirsrv) would segfault if an unauthenicated user attempted to connect to it with a missing username/dn. According to RFC 3062, connecting without specifying the username/dn is valid. Acknowledgements: This issue was discovered by Sumit Bose of Red Hat.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Red Hat FreeIPA | <=3.1.5 | |
| Red Hat FreeIPA | =3.0.0 | |
| Red Hat FreeIPA | =3.0.1 | |
| Red Hat FreeIPA | =3.0.2 | |
| Red Hat FreeIPA | =3.1.1 | |
| Red Hat FreeIPA | =3.1.2 | |
| Red Hat FreeIPA | =3.1.3 | |
| Red Hat FreeIPA | =3.1.4 |
Remedy
https://git.fedorahosted.org/cgit/freeipa.git/commit/?id=7b45e33400355df44e75576ef7f70a39d163bf8e
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Reference Links
- https://bugzilla.redhat.com/show_bug.cgi/attachment.cgi?id=702805&action=diff
- https://bugzilla.redhat.com/show_bug.cgi/attachment.cgi?id=702805&action=edit
- http://git.fedorahosted.org/cgit/freeipa.git/tree/daemons/ipa-slapi-plugins/ipa-pwd-extop/ipa_pwd_extop.c#n244
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=913751#c1
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=913751#c8
- https://bugzilla.redhat.com/show_bug.cgi/attachment.cgi?id=710779&action=diff
- https://bugzilla.redhat.com/show_bug.cgi/attachment.cgi?id=710779&action=edit
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=928387
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=928388
- https://bugzilla.redhat.com/show_bug.cgi?id=913751
- http://secunia.com/advisories/52763
- http://www.securityfocus.com/bid/58747
- https://exchange.xforce.ibmcloud.com/vulnerabilities/83132
- https://fedorahosted.org/freeipa/ticket/3539
- https://git.fedorahosted.org/cgit/freeipa.git/commit/?id=7b45e33400355df44e75576ef7f70a39d163bf8e
Frequently Asked Questions
What is the severity of CVE-2013-0336?
CVE-2013-0336 is classified as a high severity vulnerability due to its potential to cause a denial of service by crashing the directory server.
How do I fix CVE-2013-0336?
To fix CVE-2013-0336, upgrade FreeIPA to a version later than 3.1.5 or apply the relevant patches provided by Red Hat.
Who discovered CVE-2013-0336?
CVE-2013-0336 was discovered by Sumit Bose.
Which versions of FreeIPA are affected by CVE-2013-0336?
CVE-2013-0336 affects FreeIPA versions 3.0.0 through 3.1.4.
What type of attack does CVE-2013-0336 facilitate?
CVE-2013-0336 facilitates a denial of service attack by causing the directory server to segfault when unauthenticated users connect without a username.
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