Red Hat Security Advisory 2012-0306-03 - Kerberos is a network authentication system which allows clients and servers to authenticate to each other using symmetric encryption and a trusted third-party, the Key Distribution Center. It was found that ftpd, a Kerberos-aware FTP server, did not properly drop privileges. On Red Hat Enterprise Linux 5, the ftpd daemon did not check for the potential failure of the effective group ID change system call. If the group ID change failed, a remote FTP user could use this flaw to gain unauthorized read or write access to files that are owned by the root group.
672b137189ca918afd7760a04e09e67af4318ed58e5029e093c8f001ae713e91Gentoo Linux Security Advisory 201201-14 - Multiple vulnerabilities have been found in MIT Kerberos 5 Applications, the most severe of which may allow execution of arbitrary code. Versions less than 1.0.2-r1 are affected.
135efe09c96ca20d9d7663d923e21a56811a5e27a66d4ef706f14ced5d977da9Debian Linux Security Advisory 2283-1 - Tim Zingelmann discovered that due an incorrect configure script the kerborised FTP server failed to set the effective GID correctly, resulting in privilege escalation.
54a0abc706eb732a9dc25bd170e5de3023ee6c3006e83c57538633b71c12de24Mandriva Linux Security Advisory 2011-117 - ftpd.c in the GSS-API FTP daemon in MIT Kerberos Version 5 Applications 1.0.1 and earlier does not check the krb5_setegid return value, which allows remote authenticated users to bypass intended group access restrictions, and create, overwrite, delete, or read files, via standard FTP commands, related to missing autoconf tests in a configure script. The updated packages have been patched to correct this issue.
dab8d6dbdacf847c8857d2b8221f6fa38c0fe250483a7247af2d897992aba61cMIT krb5 Security Advisory 2011-005 - A remote client of the GSS-API FTP daemon in the krb5-appl distribution can access files using the effective group ID that the FTP daemon process had when it started.
1fe339215ceaa9f7616aea04e0760e9c50130ea0ca8add4046b96df17325d31eRed Hat Security Advisory 2011-0920-01 - The krb5-appl packages provide Kerberos-aware telnet, ftp, rcp, rsh, and rlogin clients and servers. While these have been replaced by tools such as OpenSSH in most environments, they remain in use in others. It was found that gssftp, a Kerberos-aware FTP server, did not properly drop privileges. A remote FTP user could use this flaw to gain unauthorized read or write access to files that are owned by the root group.
92eaf7d09061e8d6782fff5fc8afaf3e2839d6649eddf1a4cbabe01663326a44
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