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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2023.3459 golang-go.crypto security update 19 June 2023 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: golang-go.crypto Publisher: Debian Operating System: Debian GNU/Linux Resolution: Patch/Upgrade CVE Names: CVE-2020-9283 CVE-2019-11841 CVE-2019-11840 Original Bulletin: https://lists.debian.org/debian-lts-announce/2023/06/msg00017.html Comment: CVSS (Max): 7.5 CVE-2020-9283 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H) CVSS Source: NVD Calculator: https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - --------------------------BEGIN INCLUDED TEXT-------------------- - ------------------------------------------------------------------------- Debian LTS Advisory DLA-3455-1 debian-lts@lists.debian.org https://www.debian.org/lts/security/ Markus Koschany June 16, 2023 https://wiki.debian.org/LTS - ------------------------------------------------------------------------- Package : golang-go.crypto Version : 1:0.0~git20181203.505ab14-1+deb10u1 CVE ID : CVE-2019-11840 CVE-2019-11841 CVE-2020-9283 Debian Bug : 952462 Several security vulnerabilities have been discovered in golang-go.crypto, the supplementary Go cryptography libraries. CVE-2019-11840 An issue was discovered in supplementary Go cryptography libraries, aka golang-googlecode-go-crypto. If more than 256 GiB of keystream is generated, or if the counter otherwise grows greater than 32 bits, the amd64 implementation will first generate incorrect output, and then cycle back to previously generated keystream. Repeated keystream bytes can lead to loss of confidentiality in encryption applications, or to predictability in CSPRNG applications. CVE-2019-11841 A message-forgery issue was discovered in crypto/openpgp/clearsign/clearsign.go in supplementary Go cryptography libraries. The "Hash" Armor Header specifies the message digest algorithm(s) used for the signature. Since the library skips Armor Header parsing in general, an attacker can not only embed arbitrary Armor Headers, but also prepend arbitrary text to cleartext messages without invalidating the signatures. CVE-2020-9283 golang.org/x/crypto allows a panic during signature verification in the golang.org/x/crypto/ssh package. A client can attack an SSH server that accepts public keys. Also, a server can attack any SSH client. The following Go packages have been rebuilt in order to fix the aforementioned issues. rclone: 1.45-3+deb10u1 obfs4proxy: 0.0.7-4+deb10u1 gobuster: 2.0.1-1+deb10u1 restic: 0.9.4+ds-2+deb10u1 gopass: 1.2.0-2+deb10u1 aptly: 1.3.0+ds1-2.2~deb10u2: dnscrypt-proxy: 2.0.19+ds1-2+deb10u1 g10k: 0.5.7-1+deb10u1 hub: 2.7.0~ds1-1+deb10u1 acmetool: 0.0.62-3+deb10u1 syncthing: 1.0.0~ds1-1+deb10u1 packer: 1.3.4+dfsg-4+deb10u1 etcd: 3.2.26+dfsg-3+deb10u1 notary: 0.6.1~ds1-3+deb10u1 For Debian 10 buster, these problems have been fixed in version 1:0.0~git20181203.505ab14-1+deb10u1. We recommend that you upgrade your golang-go.crypto packages. For the detailed security status of golang-go.crypto please refer to its security tracker page at: https://security-tracker.debian.org/tracker/golang-go.crypto 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----- iQKTBAABCgB9FiEErPPQiO8y7e9qGoNf2a0UuVE7UeQFAmSM1J1fFIAAAAAALgAo aXNzdWVyLWZwckBub3RhdGlvbnMub3BlbnBncC5maWZ0aGhvcnNlbWFuLm5ldEFD RjNEMDg4RUYzMkVERUY2QTFBODM1RkQ5QUQxNEI5NTEzQjUxRTQACgkQ2a0UuVE7 UeS+KBAAsgaz3I4gK0BRz4msj6UYZzIFNhcsZzOjwE7n84OokPA6T1IuVnUb1J9n tHUSaOXsy6ULFV0EfIztRCF94aqqxp9m6DUbQ66PVswA3p1Dw6xoCCsX9YiDj4i3 ewV8U5wBbEus0fXOviNGBP3cTTUOnAsFUsu8wVSVnMQ4/ffaCj9qo7AY6dhMw3DG n4XkEig/GVeTL46zeh9GrbIArxsV7AD9F820JBPolT/fNw/TpHDnAo1SnzV1sry7 R35bm15hY3CTcL3bIUFSOdcgGQHQ4mhC2rfftWBimVsmB2HhnLfRt7w1miqKh7DB tRP5LUrPRCK1kndqoCdxWbBdLFyQQrfa7rnKkqrBxGDLs992IyPbs/oCfRdVzML7 zYu7VvPZyaFkm50/9mAaMXe4k/QUeHnokjutUB8bFXmD8qzXiUedKQO0HUahu7iJ Mk0AU/K0FRc4q8HGvrpWm8xCce6RajuabhaL+gxRcfWF3lxXU9p+kuTkXZu19Ybn IZRHWvBkbDsmPEIgRy81YHgCM0iNB7ZSD2YBDLjz4f/j3h97wKNqFWXkTjl6jdqb SIh17mru/3+paJKm8tGPv6acZn8fstbAElvCk4t7TX52k4bk6HmNUZn2jEHBiSm4 xz6tuqrFscN8nDSeWjK4xyfxP2j2P+fjyRMWVqe+PkKomCd6fPQ= =BqYA - -----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: 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: https://auscert.org.au/gpg-key/ iQIVAwUBZI/E/MkNZI30y1K9AQjzoxAAh7rtJzCQjvvKqV6ftkxy/YkUWwN1gHN0 q5W0m5aexDBUbFkmgh06CN175ZKa1TweLD/Bgi1KWsBpz0oTsRqmkN5NqVX6pmu9 5A7S9e1ViCFrL9hmgg1xzfx+qdwe8KS919D1q2+zRCzQPMT8HbRZm2W+y4iRAxOI WgtdXTpk7043cCDjOMMzMiit98IAyQBBvJUYqAMHoKj49zEmu/HPa6MyVHK+ym0d v9rTTnS5lW7K6S9PwwwAqInwvC5Zx22iyy8V0Jpn3kC5zzkH4ImzffP+CYiej+BJ wUFnYXzYMNFugurxdn4zJwwRn2XAsJ3kGvADNK+BkPHJ07zQYqbIVFVsHg2HTxaq zHc4nLghbEYQiIw1tqxdKTuHtP8eCQPeGMQy5QsxVQIfO2Qvl+wEZiB7rOLl7xnb 7xcQ/IPWkRmN9eLUPYiv9h1zi74qCDT9hDT6Gf7noztAkmglGItQIxLyKlzXGA+U 09UstyNuOn58hwQyQiLKcTo5jWsnreEWfduREsWY5P4QQtK5IdZDD+JerZEKdZI9 TlLPXTgmnWD2HB3hC+V+0H3YfLIp/VzNnMMxxwme75NgF1mdrhy5pw3ua9/8Yk/Z DioUN4Cpd7zpFvMV3HtWn4DGLWcIFLp9kMwPWkR1FwslKQW28uGZHDWZJnDq8Exj hSQcM5ypqWE= =FxdD -----END PGP SIGNATURE-----