Ausführen beliebiger Kommandos in Dropbear
ID: | 201309-20 |
Distribution: | Gentoo |
Plattformen: | Keine Angabe |
Datum: | Fr, 27. September 2013, 06:52 |
Referenzen: | http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2012-0920
https://bugs.gentoo.org/show_bug.cgi?id=328383 |
Applikationen: | Dropbear SSH |
Originalnachricht |
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This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --8Lcrd1qWWbOOvqFr20DHQrv90MQHmk3XT Content-Type: text/plain; charset=ISO-8859- Content-Transfer-Encoding: quoted-printable - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 201309-20 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - http://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Severity: Normal Title: Dropbear: Multiple vulnerabilities Date: September 26, 2013 Bugs: #328409, #405607 ID: 201309-20 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Synopsis ======== Multiple vulnerabilities have been found in Dropbear, the worst of which could lead to arbitrary code execution. Background ========== Dropbear is an SSH server and client designed with a small memory footprint. Affected packages ================= ------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 net-misc/dropbear < 2012.55 >= 2012.55 Description =========== Multiple vulnerabilities have been discovered in Dropbear. Please review the CVE identifier and Gentoo bug referenced below for details. Impact ====== A remote attacker could send a specially crafted request to trigger a use-after-free condition, possibly resulting in arbitrary code execution or a Denial of Service condition. Additionally, the bundled version of libtommath has an error in its prime number generation, which could result in the generation of weak keys. Workaround ========== There is no known workaround at this time. Resolution ========== All Dropbear users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose ">=net-misc/dropbear-2012.55" References ========== [ 1 ] CVE-2012-0920 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-0920 [ 2 ] libtommath Gentoo bug https://bugs.gentoo.org/show_bug.cgi?id=328383 Availability ============ This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-201309-20.xml Concerns? ========= Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users' machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org. License ======= Copyright 2013 Gentoo Foundation, Inc; referenced text belongs to its owner(s). The contents of this document are licensed under the Creative Commons - Attribution / Share Alike license. http://creativecommons.org/licenses/by-sa/2.5 --8Lcrd1qWWbOOvqFr20DHQrv90MQHmk3XT Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.20 (GNU/Linux) Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iKYEARECAGYFAlJEzYRfFIAAAAAALgAoaXNzdWVyLWZwckBub3RhdGlvbnMub3Bl bnBncC5maWZ0aGhvcnNlbWFuLm5ldEM2NzU5RjUyMDczREJDQkVDQTBDRkE1NERC Nzk1QThBNDI2MTgzNTQACgkQ23laikJhg1QOtwCfQhzgSJ0Qo+8827+JNfZ7nx5y fI8An0GTs4E4mfe2FEUQB5PXFQtsUDGL =mS6V -----END PGP SIGNATURE----- --8Lcrd1qWWbOOvqFr20DHQrv90MQHmk3XT-- |