Debian Bug report logs -
#935037
nginx: CVE-2019-9511 CVE-2019-9513 CVE-2019-9516
Reported by: Salvatore Bonaccorso <carnil@debian.org>
Date: Sun, 18 Aug 2019 12:33:01 UTC
Severity: grave
Tags: security, upstream
Found in versions nginx/1.14.2-2, nginx/1.10.3-1+deb9u2, nginx/1.10.3-1
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Bug#935037
; Package src:nginx
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(Sun, 18 Aug 2019 12:33:04 GMT) (full text, mbox, link).
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to Salvatore Bonaccorso <carnil@debian.org>
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New Bug report received and forwarded. Copy sent to carnil@debian.org, team@security.debian.org, team@security.debian.org, Debian Nginx Maintainers <pkg-nginx-maintainers@alioth-lists.debian.net>
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(Sun, 18 Aug 2019 12:33:04 GMT) (full text, mbox, link).
Message #5 received at submit@bugs.debian.org (full text, mbox, reply):
Source: nginx
Version: 1.14.2-2
Severity: grave
Tags: security upstream
Justification: user security hole
Control: found -1 1.10.3-1+deb9u2
Control: found -1 1.10.3-1
Hi,
The following vulnerabilities were published for nginx.
CVE-2019-9511[0]:
| 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-2019-9513[1]:
| 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-2019-9516[2]:
| Some HTTP/2 implementations are vulnerable to a header leak,
| potentially leading to a denial of service. The attacker sends a
| stream of headers with a 0-length header name and 0-length header
| value, optionally Huffman encoded into 1-byte or greater headers. Some
| implementations allocate memory for these headers and keep the
| allocation alive until the session dies. This can consume excess
| memory.
If you fix the vulnerabilities please also make sure to include the
CVE (Common Vulnerabilities & Exposures) ids in your changelog entry.
For further information see:
[0] https://security-tracker.debian.org/tracker/CVE-2019-9511
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-9511
https://github.com/nginx/nginx/commit/a987f81dd19210bc30b62591db331e31d3d74089
[1] https://security-tracker.debian.org/tracker/CVE-2019-9513
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-9513
https://github.com/nginx/nginx/commit/5ae726912654da10a9a81b2c8436829f3e94f69f
[2] https://security-tracker.debian.org/tracker/CVE-2019-9516
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-9516
https://github.com/nginx/nginx/commit/6dfbc8b1c2116f362bb871efebbf9df576738e89
[3] https://www.nginx.com/blog/nginx-updates-mitigate-august-2019-http-2-vulnerabilities/
Please adjust the affected versions in the BTS as needed.
Regards,
Salvatore
-- System Information:
Debian Release: bullseye/sid
APT prefers unstable
APT policy: (500, 'unstable'), (1, 'experimental')
Architecture: amd64 (x86_64)
Kernel: Linux 5.2.0-2-amd64 (SMP w/2 CPU cores)
Locale: LANG=C.UTF-8, LC_CTYPE=C.UTF-8 (charmap=UTF-8), LANGUAGE=C.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled
Marked as found in versions nginx/1.10.3-1+deb9u2.
Request was from Salvatore Bonaccorso <carnil@debian.org>
to submit@bugs.debian.org
.
(Sun, 18 Aug 2019 12:33:04 GMT) (full text, mbox, link).
Marked as found in versions nginx/1.10.3-1.
Request was from Salvatore Bonaccorso <carnil@debian.org>
to submit@bugs.debian.org
.
(Sun, 18 Aug 2019 12:33:05 GMT) (full text, mbox, link).
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