thttpd has a local DoS vulnerability via specially-crafted .htpasswd files

Agostino Sarubbo reported on the oss-security mailing list [1] that, on Gentoo, thttpd log file is world-readable. This could allow an unprivileged user to read the log file.

References: [1] http://www.openwall.com/lists/oss-security/2013/02/22/18 [2] https://bugs.gentoo.org/showbug.cgi?id=458896 [3] http://www.openwall.com/lists/oss-security/2013/02/23/7

Relevant (sthttpd) upstream patch: [4] http://opensource.dyc.edu/gitweb/?p=sthttpd.git;a=commit;h=d2e186dbd58d274a0dea9b59357edc8498b5388d

thttpd 2.25b0 writes data to a log file without sanitizing non-printable characters, which might allow remote attackers to modify a window's title, or possibly execute arbitrary commands or overwrite files, via an HTTP request containing an escape sequence for a terminal emulator.