20 February 2020
Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2020.0583 netty-3.9 security update 20 February 2020 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: netty-3.9 Publisher: Debian Operating System: Debian GNU/Linux 8 Impact/Access: Denial of Service -- Remote/Unauthenticated Provide Misleading Information -- Remote/Unauthenticated Access Confidential Data -- Remote/Unauthenticated Reduced Security -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2020-7238 CVE-2019-20445 CVE-2019-20444 CVE-2019-16869 CVE-2014-3488 CVE-2014-0193 Reference: ESB-2020.0504 ESB-2020.0450 ESB-2020.0216 ESB-2018.1282 Original Bulletin: https://lists.debian.org/debian-lts-announce/2020/02/msg00018.html - --------------------------BEGIN INCLUDED TEXT-------------------- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 Package : netty-3.9 Version : 3.9.0.Final-1+deb8u1 CVE ID : CVE-2014-0193 CVE-2014-3488 CVE-2019-16869 CVE-2019-20444 CVE-2019-20445 CVE-2020-7238 Debian Bug : 746639 941266 950966 950967 Several vulnerabilities were discovered in Netty, a Java NIO client/server socket framework: CVE-2014-0193 WebSocket08FrameDecoder allows remote attackers to cause a denial of service (memory consumption) via a TextWebSocketFrame followed by a long stream of ContinuationWebSocketFrames. CVE-2014-3488 The SslHandler allows remote attackers to cause a denial of service (infinite loop and CPU consumption) via a crafted SSLv2Hello message. CVE-2019-16869 Netty mishandles whitespace before the colon in HTTP headers (such as a "Transfer-Encoding : chunked" line), which leads to HTTP request smuggling. CVE-2019-20444 HttpObjectDecoder.java allows an HTTP header that lacks a colon, which might be interpreted as a separate header with an incorrect syntax, or might be interpreted as an "invalid fold." CVE-2019-20445 HttpObjectDecoder.java allows a Content-Length header to be accompanied by a second Content-Length header, or by a Transfer-Encoding header. CVE-2020-7238 Netty allows HTTP Request Smuggling because it mishandles Transfer-Encoding whitespace (such as a [space]Transfer-Encoding:chunked line) and a later Content-Length header. For Debian 8 "Jessie", these problems have been fixed in version 3.9.0.Final-1+deb8u1. We recommend that you upgrade your netty-3.9 packages. Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: https://wiki.debian.org/LTS - -----BEGIN PGP SIGNATURE----- iQEzBAEBCgAdFiEEQic8GuN/xDR88HkSj/HLbo2JBZ8FAl5NduMACgkQj/HLbo2J BZ+lrAf/RjA+ba6RKsrVfHxurb0cfhFzjH9JX+EA8/flVepKThwaSz407czio/pT eTt2otV5cMwnNfiYOovVFF+jCRaINCmhKwG71saU1PKo3GASf+rJOpgZ2uJyDb00 sE6+mCyVdCVeAesq6LOLIzhZSyexB9RnkzRPHDhXidM2s9XReV9F94CfIiLQ4ioF POJ0MYkO1JQHcw25y0os0o3z1vC0SpOWBiS4KrJR4QibJX4XSJ2MUz6JG7JGdgdS VoMitMckO90sHKh6Wa0nBk1rYeURNnigwvN3KSnyQLR0Lex8S8IAye8yphq7+CG7 ilj5pRlR/T32ZAXvHnqe/v5QOjZu8w== =CRBR - -----END PGP SIGNATURE----- - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. If you do not know who that is, please send an email to email@example.com and we will forward your request to the appropriate person. NOTE: Third Party Rights This security bulletin is provided as a service to AusCERT's members. As AusCERT did not write the document quoted above, AusCERT has had no control over its content. The decision to follow or act on information or advice contained in this security bulletin is the responsibility of each user or organisation, and should be considered in accordance with your organisation's site policies and procedures. AusCERT takes no responsibility for consequences which may arise from following or acting on information or advice contained in this security bulletin. NOTE: This is only the original release of the security bulletin. It may not be updated when updates to the original are made. If downloading at a later date, it is recommended that the bulletin is retrieved directly from the author's website to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. If you have any questions or need further information, please contact them directly. Previous advisories and external security bulletins can be retrieved from: https://www.auscert.org.au/bulletins/ =========================================================================== Australian Computer Emergency Response Team The University of Queensland Brisbane Qld 4072 Internet Email: firstname.lastname@example.org Facsimile: (07) 3365 7031 Telephone: (07) 3365 4417 (International: +61 7 3365 4417) AusCERT personnel answer during Queensland business hours which are GMT+10:00 (AEST). On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iQIVAwUBXk3dGWaOgq3Tt24GAQisEQ//aDK8Z4eYXBhAGw3YQtjIIm73C0GYbEJJ xfRrlP1+3HvEfu/cRzoQY9Oamu5httPc5gqFSMaX0i9C7Tz//ryOgAMcYBDvoPVP Fuz0mN2ErU3qd8fO08yR/FfW7JEoYHkknAOjy/c9nDMbGKsvO7TkRHDcjXna0jnP Ipfv5LGvc8dSPOozi35jWT6BNncYap1c8HyULolUrGsmK/nkAkJYV+m0s5jbgSxl lbqbW9vx4GW9sy1vpItuZg+vtUTgOXJVK/BGVFvif1agUSjP0nf/tVmejhwHtNtK GRxeH9YkMO0kU4X3CKFVj9wMuf6l5xAc1C74SjMUNrVE87s+424sM0GutwEmQO3o w9nmvjnOO7Jl0YtAqD8HK98UlId+f0QaBejqNd3PRO8FZas5fwjlA0t+GbQy0c3j ANHJd7zdfJPL33QsfI+iBbktuCsKjAjpN3Kw29YH5UhBc+pKQtWB+KcMGblCoPjh DyTnSXAaTFnN0KTNxClNDSI9Q1Uot1JVHg8Y8vmmtPHa5BRa69tEkFbQpuQjdEt+ YBM5idhGkartxMLqeT3SnkL5sNi3oORclUTOOgdUxfIdoUU6Eslobq+8jKsI2q+P Rgy71zbiR5K/bJRh0L9AbuvEipUr7RPfKy08RjTXK4t2wRapygWi0+0Njo0NFkUv 9XHKrgwh+5U= =BNda -----END PGP SIGNATURE-----