A buffer underflow vulnerability in the request URI processing of nginx might enable remote attackers to execute arbitrary code or cause a Denial of Service.
Package | www-servers/nginx on all architectures |
---|---|
Affected versions | < 0.7.62 |
Unaffected versions | revision >= 0.5.38 revision >= 0.6.39 >= 0.7.62 |
nginx is a robust, small and high performance HTTP and reverse proxy server.
Chris Ries reported a heap-based buffer underflow in the ngx_http_parse_complex_uri() function in http/ngx_http_parse.c when parsing the request URI.
A remote attacker might send a specially crafted request URI to a nginx server, possibly resulting in the remote execution of arbitrary code with the privileges of the user running the server, or a Denial of Service. NOTE: By default, nginx runs as the "nginx" user.
There is no known workaround at this time.
All nginx 0.5.x users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose ">=www-servers/nginx-0.5.38"
All nginx 0.6.x users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose ">=www-servers/nginx-0.6.39"
All nginx 0.7.x users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose ">=www-servers/nginx-0.7.62"
Release date
September 18, 2009
Latest revision
September 18, 2009: 01
Severity
high
Exploitable
remote
Bugzilla entries