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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2011.1091 radvd security update 31 October 2011 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: radvd Publisher: Debian Operating System: Debian GNU/Linux 5 Debian GNU/Linux 6 UNIX variants (UNIX, Linux, OSX) Impact/Access: Overwrite Arbitrary Files -- Remote/Unauthenticated Denial of Service -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2011-3605 CVE-2011-3604 CVE-2011-3602 Original Bulletin: http://www.debian.org/security/2011/dsa-2323 Comment: This advisory references vulnerabilities in products which run on platforms other than Debian. It is recommended that administrators running radvd check for an updated version of the software for their operating system. - --------------------------BEGIN INCLUDED TEXT-------------------- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 - - ------------------------------------------------------------------------- Debian Security Advisory DSA-2323-1 security@debian.org http://www.debian.org/security/ Yves-Alexis Perez October 26, 2011 http://www.debian.org/security/faq - - ------------------------------------------------------------------------- Package : radvd Vulnerability : several Problem type : remote Debian-specific: no CVE ID : CVE-2011-3602 CVE-2011-3604 CVE-2011-3605 Debian Bug : 644614 Multiple security issues were discovered by Vasiliy Kulikov in radvd, an IPv6 Router Advertisement daemon: CVE-2011-3602 set_interface_var() function doesn't check the interface name, which is chosen by an unprivileged user. This could lead to an arbitrary file overwrite if the attacker has local access, or specific files overwrites otherwise. CVE-2011-3604 process_ra() function lacks multiple buffer length checks which could lead to memory reads outside the stack, causing a crash of the daemon. CVE-2011-3605 process_rs() function calls mdelay() (a function to wait for a defined time) unconditionnally when running in unicast-only mode. As this call is in the main thread, that means all request processing is delayed (for a time up to MAX_RA_DELAY_TIME, 500 ms by default). An attacked could flood the daemon with router solicitations in order to fill the input queue, causing a temporary denial of service (processing would be stopped during all the mdelay() calls). Note: upstream and Debian default is to use anycast mode. For the oldstable distribution (lenny), this problem has been fixed in version 1:1.1-3.1. For the stable distribution (squeeze), this problem has been fixed in version 1:1.6-1.1. For the testing distribution (wheezy), this problem has been fixed in version 1:1.8-1.2. For the unstable distribution (sid), this problem has been fixed in version 1:1.8-1.2. We recommend that you upgrade your radvd packages. Further information about Debian Security Advisories, how to apply these updates to your system and frequently asked questions can be found at: http://www.debian.org/security/ Mailing list: debian-security-announce@lists.debian.org - -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.11 (GNU/Linux) iEYEARECAAYFAk6q2QcACgkQXm3vHE4uylqlEQCgpdFwHzpKLF6KHlJs4y/ykeo/ oEYAniJXFaff25pMtXzM6Ovu8zslZm7H =VfHu - -----END PGP SIGNATURE----- - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. 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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: http://www.auscert.org.au/render.html?cid=1980 =========================================================================== 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 iQIVAwUBTq47LO4yVqjM2NGpAQKYhw//VRRBxNCnHPrbjFB+oeBE2XzU6RTxoctw x4LqKdeiosJwcgx+wV64c8+ZKjHT3x1c6BgLtK7e0gVlWKDiJ8sUKJwbPg1DZbrM 0qNE/UG21f9bQAys19n9FnVrXV9S5BmtZslpIbsH0n6C333hI6p+Q/Rws4ACQJuw E7R9SeEPstOMYWhKqykFhTpQLKtwk4iFuGxnqmR5ty7pfdBNOFP5RkVq7KoGuKXr aK1VcawtnswfAebJaa6KReVwpqchil//nP3j1xwpPivimkPoBLxczGaDFvEQK83i Cd6vHLSFtqocxptfYn9OZeibkJ6kNIzaQEo2r+jnXHhH7JXv53BmKCkjGu1o48P4 iwXQv9NIcerssrOlTXjKKXc2Uc+WlgHyCayPyVVfgQSBqfEECWPIj7K1mwL7gZxC Llm+rCDrDewTXSd4Ar9nTHwwww8sjIYPvsS5bE6ylZJjkKKTce4RFhRtUnB6RqTe Gm5fqfD0cb06X0PN1Yvnl6OXfZ8eTNez+xIsW9Nq/mrJha42glkKiOS7dWYAQ7t1 feGpMVoFW6iI4D2lFnoQC839kzIUmXiKVCAmA9mWADa9uSEvnXMJApUGic8OgbeF KDs6CHhtGFhnpJUzieSvvJFrWoQaqq1grYgdcCrPBJj70yZSoYmVbvt6WJLFBxbf Hl/rhygaZxs= =onQ2 -----END PGP SIGNATURE-----