Advisories ยป MGASA-2019-0291

Updated nghttp2 packages fix security vulnerabilities

Publication date: 28 Sep 2019
Modification date: 28 Sep 2019
Type: security
Affected Mageia releases : 6 , 7
CVE: CVE-2019-9511 , CVE-2019-9513

Description

The updated packages fix security vulnerabilities:

Some HTTP/2 implementations are vulnerable to window size manipulation
and stream prioritization manipulation, potentially leading to a denial
of service. The attacker requests a large amount of data from a specified
resource over multiple streams. They manipulate window size and stream
priority to force the server to queue the data in 1-byte chunks. Depending
on how efficiently this data is queued, this can consume excess CPU,
memory, or both. (CVE-2019-9511)

Some HTTP/2 implementations are vulnerable to resource loops, potentially
leading to a denial of service. The attacker creates multiple request
streams and continually shuffles the priority of the streams in a way that
causes substantial churn to the priority tree. This can consume excess CPU.
(CVE-2019-9513)

References

SRPMS

7/core

6/core