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
