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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2020.0336 opensmtpd security update 30 January 2020 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: opensmtpd Publisher: Debian Operating System: Debian GNU/Linux 9 Impact/Access: Root Compromise -- Remote/Unauthenticated Execute Arbitrary Code/Commands -- Remote/Unauthenticated Denial of Service -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2020-7247 Original Bulletin: https://lists.debian.org/debian-security-announce/2020/msg00014.html - --------------------------BEGIN INCLUDED TEXT-------------------- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 - - ------------------------------------------------------------------------- Debian Security Advisory DSA-4611-1 security@debian.org https://www.debian.org/security/ Moritz Muehlenhoff January 29, 2020 https://www.debian.org/security/faq - - ------------------------------------------------------------------------- Package : opensmtpd CVE ID : CVE-2020-7247 Debian Bug : 950121 Qualys discovered that the OpenSMTPD SMTP server performed insufficient validation of email addresses which could result in the execution of arbitrary commands as root. In addition this update fixes a denial of service by triggering an opportunistic TLS downgrade. For the oldstable distribution (stretch), these problems have been fixed in version 6.0.2p1-2+deb9u2. For the stable distribution (buster), these problems have been fixed in version 6.0.3p1-5+deb10u3. This update also includes non-security bugfixes which were already lined up for the Buster 10.3 point release. We recommend that you upgrade your opensmtpd packages. For the detailed security status of opensmtpd please refer to its security tracker page at: https://security-tracker.debian.org/tracker/opensmtpd Further information about Debian Security Advisories, how to apply these updates to your system and frequently asked questions can be found at: https://www.debian.org/security/ Mailing list: debian-security-announce@lists.debian.org - -----BEGIN PGP SIGNATURE----- iQIzBAEBCgAdFiEEtuYvPRKsOElcDakFEMKTtsN8TjYFAl4yAAEACgkQEMKTtsN8 TjZY1g/9F3JfNN3g0Exzq/KEl1IspVC1RwGKq89wMktQ0Jyhbh/h1RKdeb81geCk 9ZzwJW5R2I6VSL1CJBtBmlPBjBUtYQyok27cKuTg8fk3YJfs/AC1dWkfijPF/6OO Kb7Kd/96dSQZUYx7+vYWcy7v0/kEPWrUUKdw78nO0bBZoua+L8XuB+u1lCy2kx0C cKIB6qEtqAXGUFkC/VALKafwt1FaRnQ5YeUICyu3y77ZLPysVdxFWtz1RrqgRDUs LuSVz5MZ/KHC7+zU7SubFI7dtltJKEOnaDeisdykY5gjsjykVUZMmIvjsyUTzNNI jwXQYh9DySlk/y5/O0NlDtjxC7ccFea50Mdm1OPIR7utWNzYTqAEzzooXiNfezpK hDh06vmNALi3KRb6sauYdrK+3gmhvZj2YYzYdQCp7zyUDJLIdC1cuykK/ZyL53Yq teQSs8BRRqxbTCn2RE/vPbEaE27WZDQyoUy8Kj0CqtuInQwR4cQA+cOE5a+1bLqt mltYDsZo8sV9nq/LbNHJif7uFAk6huUIYPje9H9AgA2j0BC62eK+XC7m3UMoeemv UTvI9NURXCnC6i8N+XczNi7szbGcsp1pyz9mORr7ZvA/yz6bXgoMIrQY5hepaFyF vk97cxfEn9dEWm9rl6xaXaPEH0jc4VCigv0Gv+3PS8yt/U2Qy9k= =tabP - -----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 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 iQIVAwUBXjIbCmaOgq3Tt24GAQgmgBAAtNKsyRPDeghmU8JY0RjNClP/GMoHd8P2 up4a1yy1aPhfDlHPl4XY6PJHy0hLjyvHkYsnFZTImbwdC4KXmtoVWfxRoMUMXImG vpDJ800q22UvZV0obaoQCtxHlqk+Ur4yW6lQfDtKrt2mU0J0vA1jIEl0IcM9LxFs 485GBLWo/Bd0UqPm3Vma3+jrFrW8WZoOlDOZsf9xChBSAyW9/8w3rxJHDo/e7ljO Tdtq2h35e3A3zLzYWTFyt8tYzUAbroX6IFRuKiEYtr2cwe2Fhw8AR8a3OGvTc7mI Lg9ukFgjLgP5n0K7rBNDgQnfe0P6TqOJd/C3SRRSY3A/RBpPykT1YUb17FJMe1Kq yIXnQ8e9wsY/NdUOBcAE+nnwRRaSFgd4WSBuolk8B5JYmtwHrHqJ+nx4ErY5DdP4 +VsmaS+j6A7d4O2Pf+BIvgi4Bd6DdwwXYfav9yaD87+evvSUPhVJJz3uIEUEfTPc L5XIQr4GVkIltPDmI3dIwUd96UBO4Xty9XeHssjxnS3cxa+Cx4rD3JkDo/5OebA5 p48XVpktDes1DQs8ou6potvyVsxtt5Tk7OEnGN8/j8dl/8tfOOqU7gXaUBIUUw1t nsPqxPME5uf//eou0brOtWo3xb8Q6XNjqcWhvRJWvxGf4e5PUz33nmx8Fuv/VbJF EVdOQ1Kyh9I= =agLd -----END PGP SIGNATURE-----