Date: Sat, 26 Apr 2014 06:16:29 -0400 From: Jason Hellenthal <jhellenthal@dataix.net> To: Joe Parsons <jp4314@outlook.com> Cc: "freebsd-security@freebsd.org" <freebsd-security@freebsd.org> Subject: Re: am I NOT hacked? Message-ID: <40252ED1-CB5C-4A4D-B0B8-C3E9AFCDD3C2@dataix.net> In-Reply-To: <BAY180-W44C86C61CA8027AC418DD8C4450@phx.gbl> References: <BAY180-W44C86C61CA8027AC418DD8C4450@phx.gbl>
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--Apple-Mail-6402F128-C5A9-41ED-A55B-2A104FB01680 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: quoted-printable Excuse me but there is nothing about the information you have provided that c= ould or would suggest that you have or have not been hacked. There is not a w= ay from the very little information that you have provided to diagnose that a= nd doesn't seem that you have covered all the avenues possible to even detec= t an unwanted change in your systems. For the least part yes FreeBSD does store the passwd info in a database. You= could have skipped running vipw(8) and just run pw_mkdb /etc/master.passwd t= o resolve that problem. Its common knowledge. To solve the hacked or not hacked problem you should take the steps to creat= e a new clean system and migrate your data but j doubt this list is a justif= ied medium to discuss all the possible avenues that you would have to cover o= n a possibly compromised system. Clean fresh system and start from there. Good luck=20 --=20 Jason Hellenthal Voice: 95.30.17.6/616 JJH48-ARIN > On Apr 26, 2014, at 5:55, Joe Parsons <jp4314@outlook.com> wrote: >=20 > I was slow to patch my multiple vms after that heartbleed disclosure. I j= ust managed to upgrade these systems to 9.2, and installed the patched opens= sl, then started changing passwords for root and other shell users. However= I realized that, only the root password was changed. For other users, even= though the "passwd userid" issued no warning, and "echo $?" is 0, the passw= ord is NOT changed. >=20 > For more debugging, I tried to "adduser", the command was successful, and I= can see the new entry "test" in /etc/passwd. However "finger test" complain= s no such user! Also, "rm test" complains there is no such user to delete a= s well. >=20 > Furthermore, the mail server got problem sending email, the log file said t= here is no such user "postfix", and sure enough: >=20 > # finger postfix > finger: postfix: no such user >=20 > while this "postfix" user certainly existed for years, and I can see see i= ts entry in /etc/passwd. >=20 > This appeared to all the multiple vms on multiple hosts, all running FreeB= SD 9.2 now. >=20 > I was paranoid, I really should have patched all these systems immediately= reading that heartbleed news, as all these servers had the vulnerable opens= sl port installed! >=20 > Until googling and I found this:=20 >=20 > https://forums.freebsd.org/viewtopic.php?&t=3D29644 >=20 > it said "The user accounts are actually stored in a database. It's possibl= e it got out of sync with your [file]/etc/passwd[/file] file.", and it sugge= sted running "vipw" to fix it. >=20 > I ran vipw, then saved, and quit. No joy. Then ran vipw again, made a ch= ange, then undid the change, save again. Now "finger postfix" found the use= r, and I can change user password now, and all the above problem disappeared= . >=20 > Am I right that, that I am NOT hacked? Is the above problem produced by t= he freebsd-update process? Is this supposed to happen? I just followed the= handbook to update from 9.1-RELEASE to 9.2-RELEASE, never compiled kernel o= r tweak. >=20 > Thank you! Joe > =20 > _______________________________________________ > freebsd-security@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-security > To unsubscribe, send any mail to "freebsd-security-unsubscribe@freebsd.org= " --Apple-Mail-6402F128-C5A9-41ED-A55B-2A104FB01680 Content-Type: application/pkcs7-signature; name=smime.p7s Content-Disposition: attachment; filename=smime.p7s Content-Transfer-Encoding: base64 MIAGCSqGSIb3DQEHAqCAMIACAQExCzAJBgUrDgMCGgUAMIAGCSqGSIb3DQEHAQAAoIIUOTCCBjAw ggUYoAMCAQICAwaijjANBgkqhkiG9w0BAQsFADCBjDELMAkGA1UEBhMCSUwxFjAUBgNVBAoTDVN0 YXJ0Q29tIEx0ZC4xKzApBgNVBAsTIlNlY3VyZSBEaWdpdGFsIENlcnRpZmljYXRlIFNpZ25pbmcx ODA2BgNVBAMTL1N0YXJ0Q29tIENsYXNzIDEgUHJpbWFyeSBJbnRlcm1lZGlhdGUgQ2xpZW50IENB MB4XDTEzMDUxODA4NTA0OFoXDTE0MDUxOTIyMDk0N1owSDEfMB0GA1UEAwwWamhlbGxlbnRoYWxA ZGF0YWl4Lm5ldDElMCMGCSqGSIb3DQEJARYWamhlbGxlbnRoYWxAZGF0YWl4Lm5ldDCCASIwDQYJ KoZIhvcNAQEBBQADggEPADCCAQoCggEBALgnYFS1bWZr3KhKBzWAdRwrY+En+RRV8nCaYubqrMG+ 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