Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2018.2539 node.js - multiple vulnerabilities 28 August 2018 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Node.js Publisher: FreeBSD Operating System: FreeBSD UNIX variants (UNIX, Linux, OSX) Windows Impact/Access: Execute Arbitrary Code/Commands -- Remote/Unauthenticated Access Privileged Data -- Remote/Unauthenticated Denial of Service -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2018-12115 CVE-2018-7166 CVE-2018-0732 Reference: ESB-2018.2495 ESB-2018.2458 ESB-2018.1870 Original Bulletin: https://www.vuxml.org/freebsd/0904e81f-a89d-11e8-afbb-bc5ff4f77b71.html Comment: This advisory references vulnerabilities in products which run on platforms other than FreeBSD. It is recommended that administrators running check for an updated version of the software for their operating system. - --------------------------BEGIN INCLUDED TEXT-------------------- node.js -- multiple vulnerabilities Affected packages node < 10.9.0 node8 < 8.11.4 node6 < 6.14.4 Details VuXML ID 0904e81f-a89d-11e8-afbb-bc5ff4f77b71 Discovery 2018-08-16 Entry 2018-08-25 Node.js reports: OpenSSL: Client DoS due to large DH parameter This fixes a potential denial of service (DoS) attack against client connections by a malicious server. During a TLS communication handshake, where both client and server agree to use a cipher-suite using DH or DHE (Diffie-Hellman, in both ephemeral and non-ephemeral modes), a malicious server can send a very large prime value to the client. Because this has been unbounded in OpenSSL, the client can be forced to spend an unreasonably long period of time to generate a key, potentially causing a denial of service. OpenSSL: ECDSA key extraction via local side-channel Attackers with access to observe cache-timing may be able to extract DSA or ECDSA private keys by causing the victim to create several signatures and watching responses. This flaw does not have a CVE due to OpenSSL policy to not assign itself CVEs for local-only vulnerabilities that are more academic than practical. This vulnerability was discovered by Keegan Ryan at NCC Group and impacts many cryptographic libraries including OpenSSL. Unintentional exposure of uninitialized memory Only Node.js 10 is impacted by this flaw. Node.js TSC member Nikita Skovoroda discovered an argument processing flaw that causes Buffer.alloc() to return uninitialized memory. This method is intended to be safe and only return initialized, or cleared, memory. The third argument specifying encoding can be passed as a number, this is misinterpreted by Buffer's internal "fill" method as the start to a fill operation. This flaw may be abused where Buffer.alloc() arguments are derived from user input to return uncleared memory blocks that may contain sensitive information. Out of bounds (OOB) write Node.js TSC member Nikita Skovoroda discovered an OOB write in Buffer that can be used to write to memory outside of a Buffer's memory space. This can corrupt unrelated Buffer objects or cause the Node.js process to crash. When used with UCS-2 encoding (recognized by Node.js under the names 'ucs2', 'ucs-2', 'utf16le' and 'utf-16le'), Buffer#write() can be abused to write outside of the bounds of a single Buffer. Writes that start from the second-to-last position of a buffer cause a miscalculation of the maximum length of the input bytes to be written. References CVE Name CVE-2018-0732 CVE Name CVE-2018-12115 CVE Name CVE-2018-7166 URL https://nodejs.org/en/blog/vulnerability/august-2018-security-releases/ - --------------------------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 auscert@auscert.org.au 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: auscert@auscert.org.au 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 iQIVAwUBW4TaS2aOgq3Tt24GAQjEPw//WYTBTY2m+oYmgQZhtbMJ+vGePtgQzir6 NGe4ktMuLDWS26j6ktSEguvjCEROf5H9NusDuRPA4kOk7qeEo1L8XlVYAkr0B/Og slu2AwdCA7dlKYIyPQ0D7XYHXJdI+lcIIlWplw9nltFEYCQrB1mtUUMq5brY81N/ 1J4sxbd/YuuFYd4xCbL/O6iBs1ewwn2ooXhQ2dy7vlwz0qV6EGla/QGpp6aTU832 ZtHxr94udQsyojqNZbLMSs4mWtRZvmcB+8U3Cg4/e5Zi4LC02rvz0PBT0Jsi3dhm UQ3vISJgthOEOWKoxIKJlkKyHgtZghzbAy31Fqdzd9rbrNw9y6kRIFRewVSmEtrI mylbZuCPl+p5A2/MyFpT1XHLXQceJ8Fx947XEUS3xxvWuw2xz2T8raoFZgwUBVRe IKXPY7NEzMe1Hi/CkwVC6m/q/guT/1qpkpA/03V+K7DY/+UDQzWCuoWUoWwpvk73 UENF8UPYDP7kzDd+b348TFiTnUAdGSVgJH0/TwFYCIjPIvwRxDuN1Uk0PupgnqRS JBfQg9/tQ9jB5+j09oOQji071kTXVlYUtEChOvD2Jeiz9WmZjY4RcKCqqoRv2jGy th+TvUD2OcyBEmfSsdTJLiqEqBOWcXBwZWNWhRNE6KwP2xFNrIw2LxoARkCSQxFB jkF3/yWTMec= =TP4C -----END PGP SIGNATURE-----