Date: Wed, 28 Jan 2015 13:39:18 +1300 From: Amos Jeffries <squid3@...enet.co.nz> To: oss-security@...ts.openwall.com Subject: Re: Qualys Security Advisory CVE-2015-0235 - GHOST: glibc gethostbyname buffer overflow -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On 28/01/2015 7:20 a.m., Qualys Security Advisory wrote: > On Tue, Jan 27, 2015 at 09:20:21AM -0800, Michal Zalewski wrote: >> Nice work - thanks for the thoroughly investigated and detailed >> advisory. > > Thank you very much. We also sincerely regret that some > information about this vulnerability was leaked a few hours before > the Coordinated Release Date (Time, in this particular case). > >> you be willing to publish the list of the reviewed >> implementations to reduce the amount of repeated work? > > Here is a list of potential targets that we investigated (they all > call gethostbyname, one way or another), but to the best of our > knowledge, the buffer overflow cannot be triggered in any of them: > > apache, cups, dovecot, gnupg, isc-dhcp, lighttpd, mariadb/mysql, > nfs-utils, nginx, nodejs, openldap, openssh, postfix, proftpd, > pure-ftpd, rsyslog, samba, sendmail, sysklogd, syslog-ng, > tcp_wrappers, vsftpd, xinetd. You can add squid, its bundled plugin helpers, squidpurge, and cachemgr.cgi to that list as not vulnerable. gethostbyname() use is protected by filters on remotely provided inputs. The squidclient tool version 3.0 and older may be vulnerable if the bad value is provided through the command line -l or -h parameters. This may be a problem for any scripted products using the tool as a backend. Version 3.1 and newer of this tool are not vulnerable. Amos Jeffries Squid Software Foundation -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.22 (MingW32) iQEbBAEBAgAGBQJUyC+1AAoJELJo5wb/XPRjg1oH+JJdmbB877JAmSp/ETTfaj6Z 2UdHKe5zMlgqHkU8kz8H5PpGPGMrPOvUQWSoUp+o9iUndmK9vDXauuojGdHMJI5c Vl5LQ4kIeSBC7uHvsbRneu8CoYEn8FrvubGuAz2Uq3nmDNCWVdQ5j0OCAhApqOTo VX5wIuxginW/0nFmRBJ8q81iFXqCD058XkCG7r6ulGvk1/AUtqUq9wuKNBG2Ov08 ELG9zCqxqk+N/NRyi1MrCTQccGieVE+kmeyCRsVsERoJlPLXlADt6j41Szj/Qdkm K4Lkq9pvBf722cuepr62LgJGyJX9D3YK+LmQk6zK8BdE/PIa9seniH+upxv8sQ== =dj7r -----END PGP SIGNATURE-----
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