Unrated severityNVD Advisory· Published Aug 13, 2019· Updated Aug 4, 2024
Some HTTP/2 implementations are vulnerable to unconstrained interal data buffering, potentially leading to a denial of service
CVE-2019-9517
Description
Some HTTP/2 implementations are vulnerable to unconstrained interal data buffering, potentially leading to a denial of service. The attacker opens the HTTP/2 window so the peer can send without constraint; however, they leave the TCP window closed so the peer cannot actually write (many of) the bytes on the wire. The attacker then sends a stream of requests for a large response object. Depending on how the servers queue the responses, this can consume excess memory, CPU, or both.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
34- HTTP/2/HTTP/2description
- osv-coords33 versionspkg:rpm/almalinux/nodejs-nodemonpkg:rpm/almalinux/nodejs-packagingpkg:rpm/opensuse/apache2&distro=openSUSE%20Leap%2015.0pkg:rpm/opensuse/apache2&distro=openSUSE%20Leap%2015.1pkg:rpm/opensuse/apache2&distro=openSUSE%20Tumbleweedpkg:rpm/opensuse/nodejs10&distro=openSUSE%20Leap%2015.0pkg:rpm/opensuse/nodejs10&distro=openSUSE%20Leap%2015.1pkg:rpm/opensuse/nodejs8&distro=openSUSE%20Leap%2015.0pkg:rpm/opensuse/nodejs8&distro=openSUSE%20Leap%2015.1pkg:rpm/suse/apache2&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Server%20Applications%2015pkg:rpm/suse/apache2&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Server%20Applications%2015%20SP1pkg:rpm/suse/apache2&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP4pkg:rpm/suse/apache2&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP4pkg:rpm/suse/apache2&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012%20SP4pkg:rpm/suse/firefox-atk&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP4-LTSSpkg:rpm/suse/firefox-cairo&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP4-LTSSpkg:rpm/suse/firefox-gdk-pixbuf&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP4-LTSSpkg:rpm/suse/firefox-glib2&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP4-LTSSpkg:rpm/suse/firefox-gtk3&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP4-LTSSpkg:rpm/suse/firefox-harfbuzz&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP4-LTSSpkg:rpm/suse/firefox-libffi&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP4-LTSSpkg:rpm/suse/firefox-libffi-gcc5&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP4-LTSSpkg:rpm/suse/firefox-pango&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP4-LTSSpkg:rpm/suse/MozillaFirefox-branding-SLED&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP4-LTSSpkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP4-LTSSpkg:rpm/suse/mozilla-nspr&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP4-LTSSpkg:rpm/suse/mozilla-nss&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP4-LTSSpkg:rpm/suse/nodejs10&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Web%20and%20Scripting%2012pkg:rpm/suse/nodejs10&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Web%20and%20Scripting%2015pkg:rpm/suse/nodejs10&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Web%20and%20Scripting%2015%20SP1pkg:rpm/suse/nodejs12&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Web%20and%20Scripting%2012pkg:rpm/suse/nodejs8&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Web%20and%20Scripting%2015pkg:rpm/suse/nodejs8&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Web%20and%20Scripting%2015%20SP1
< 1.18.3-1.module_el8.3.0+2023+d2377ea3+ 32 more
- (no CPE)range: < 1.18.3-1.module_el8.3.0+2023+d2377ea3
- (no CPE)range: < 17-3.module_el8.4.0+2224+b07ac28e
- (no CPE)range: < 2.4.33-lp151.8.6.1
- (no CPE)range: < 2.4.33-lp151.8.6.1
- (no CPE)range: < 2.4.49-1.1
- (no CPE)range: < 10.16.3-lp151.2.6.1
- (no CPE)range: < 10.16.3-lp151.2.6.1
- (no CPE)range: < 8.16.1-lp151.2.6.1
- (no CPE)range: < 8.16.1-lp151.2.6.1
- (no CPE)range: < 2.4.33-3.21.1
- (no CPE)range: < 2.4.33-3.21.1
- (no CPE)range: < 2.4.23-29.43.1
- (no CPE)range: < 2.4.23-29.43.1
- (no CPE)range: < 2.4.23-29.43.1
- (no CPE)range: < 2.26.1-2.8.4
- (no CPE)range: < 1.15.10-2.13.4
- (no CPE)range: < 2.36.11-2.8.4
- (no CPE)range: < 2.54.3-2.14.7
- (no CPE)range: < 3.10.9-2.15.3
- (no CPE)range: < 1.7.5-2.7.4
- (no CPE)range: < 3.2.1.git259-2.3.3
- (no CPE)range: < 5.3.1+r233831-14.1
- (no CPE)range: < 1.40.14-2.7.4
- (no CPE)range: < 68-21.9.8
- (no CPE)range: < 68.2.0-78.51.4
- (no CPE)range: < 4.21-29.6.1
- (no CPE)range: < 3.45-38.9.3
- (no CPE)range: < 10.16.3-1.12.1
- (no CPE)range: < 10.16.3-1.12.1
- (no CPE)range: < 10.16.3-1.12.1
- (no CPE)range: < 12.13.0-1.3.1
- (no CPE)range: < 8.16.1-3.20.1
- (no CPE)range: < 8.16.1-3.20.1
Patches
Vulnerability mechanics
References
47- lists.opensuse.org/opensuse-security-announce/2019-09/msg00004.htmlmitrevendor-advisoryx_refsource_SUSE
- lists.opensuse.org/opensuse-security-announce/2019-09/msg00031.htmlmitrevendor-advisoryx_refsource_SUSE
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- lists.apache.org/thread.html/4610762456644181b267c846423b3a990bd4aaea1886ecc7d51febdb%40%3Cannounce.httpd.apache.org%3Emitremailing-listx_refsource_MLIST
- lists.apache.org/thread.html/56c2e7cc9deb1c12a843d0dc251ea7fd3e7e80293cde02fcd65286ba%40%3Ccvs.httpd.apache.org%3Emitremailing-listx_refsource_MLIST
- lists.apache.org/thread.html/d89f999e26dfb1d50f247ead1fe8538014eb412b2dbe5be4b1a9ef50%40%3Cdev.httpd.apache.org%3Emitremailing-listx_refsource_MLIST
- lists.apache.org/thread.html/ec97fdfc1a859266e56fef084353a34e0a0b08901b3c1aa317a43c8c%40%3Cdev.httpd.apache.org%3Emitremailing-listx_refsource_MLIST
- lists.apache.org/thread.html/r03ee478b3dda3e381fd6189366fa7af97c980d2f602846eef935277d%40%3Ccvs.httpd.apache.org%3Emitremailing-listx_refsource_MLIST
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- lists.apache.org/thread.html/r3c5c3104813c1c5508b55564b66546933079250a46ce50eee90b2e36%40%3Ccvs.httpd.apache.org%3Emitremailing-listx_refsource_MLIST
- lists.apache.org/thread.html/r76142b8c5119df2178be7c2dba88fde552eedeec37ea993dfce68d1d%40%3Ccvs.httpd.apache.org%3Emitremailing-listx_refsource_MLIST
- lists.apache.org/thread.html/r9f93cf6dde308d42a9c807784e8102600d0397f5f834890708bf6920%40%3Ccvs.httpd.apache.org%3Emitremailing-listx_refsource_MLIST
- lists.apache.org/thread.html/rc998b18880df98bafaade071346690c2bc1444adaa1a1ea464b93f0a%40%3Ccvs.httpd.apache.org%3Emitremailing-listx_refsource_MLIST
- lists.apache.org/thread.html/rd18c3c43602e66f9cdcf09f1de233804975b9572b0456cc582390b6f%40%3Ccvs.httpd.apache.org%3Emitremailing-listx_refsource_MLIST
- lists.apache.org/thread.html/rd2fb621142e7fa187cfe12d7137bf66e7234abcbbcd800074c84a538%40%3Ccvs.httpd.apache.org%3Emitremailing-listx_refsource_MLIST
- lists.apache.org/thread.html/re3d27b6250aa8548b8845d314bb8a350b3df326cacbbfdfe4d455234%40%3Ccvs.httpd.apache.org%3Emitremailing-listx_refsource_MLIST
- lists.apache.org/thread.html/rf6449464fd8b7437704c55f88361b66f12d5b5f90bcce66af4be4ba9%40%3Ccvs.httpd.apache.org%3Emitremailing-listx_refsource_MLIST
- seclists.org/bugtraq/2019/Aug/47mitremailing-listx_refsource_BUGTRAQ
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- support.f5.com/csp/article/K02591030mitrex_refsource_CONFIRM
- support.f5.com/csp/article/K02591030mitrex_refsource_CONFIRM
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- www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.htmlmitrex_refsource_MISC
- www.synology.com/security/advisory/Synology_SA_19_33mitrex_refsource_CONFIRM
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