Nghttp2 is vulnerable to a Denial of Service attack.
|Package||net-libs/nghttp2 on all architectures|
|Affected versions||< 1.7.1|
|Unaffected versions||>= 1.7.1|
Nghttp2 is an implementation of HTTP/2 and its header compression algorithm HPACK in C.
Nghttpd, nghttp, and libnghttp2_asio applications do not limit the memory usage for the incoming HTTP header field. If a peer sends a specially crafted HTTP/2 HEADERS frame and CONTINUATION frame, they will crash with an out of memory error.
A remote attacker could possibly cause a Denial of Service condition.
There is no known workaround at this time.
All nghttp2 users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose ">=net-libs/nghttp2-1.7.1"
December 05, 2016
December 05, 2016: 1