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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2021.3134 USN-5080-2: Libgcrypt vulnerabilities 17 September 2021 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Libgcrypt Publisher: Ubuntu Operating System: Ubuntu Impact/Access: Access Confidential Data -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2021-40528 CVE-2021-33560 Reference: ESB-2021.2242 ESB-2021.2234 ESB-2021.2188 Original Bulletin: https://ubuntu.com/security/notices/USN-5080-2 https://ubuntu.com/security/notices/USN-5080-1 Comment: This bulletin contains two (2) Ubuntu security advisories. - --------------------------BEGIN INCLUDED TEXT-------------------- USN-5080-2: Libgcrypt vulnerabilities 16 September 2021 Libgcrypt could be made to expose sensitive information. Releases o Ubuntu 16.04 ESM Packages o libgcrypt20 - LGPL Crypto library Details USN-5080-1 fixed several vulnerabilities in Libgcrypt. This update provides the corresponding update for Ubuntu 16.04 ESM. Original advisory details: It was discovered that Libgcrypt incorrectly handled ElGamal encryption. An attacker could possibly use this issue to recover sensitive information. Update instructions The problem can be corrected by updating your system to the following package versions: Ubuntu 16.04 o libgcrypt20 - 1.6.5-2ubuntu0.6+esm1 Available with UA Infra or UA Desktop In general, a standard system update will make all the necessary changes. References o CVE-2021-33560 o CVE-2021-40528 Related notices o USN-5080-1 : libgcrypt-mingw-w64-dev, libgcrypt20-doc, libgcrypt11-dev, libgcrypt20-dev, libgcrypt20 - ------------------------------------------------------------------------------------------------- USN-5080-1: Libgcrypt vulnerabilities 16 September 2021 Libgcrypt could be made to expose sensitive information. Releases o Ubuntu 21.04 o Ubuntu 20.04 LTS o Ubuntu 18.04 LTS Packages o libgcrypt20 - LGPL Crypto library Details It was discovered that Libgcrypt incorrectly handled ElGamal encryption. An attacker could possibly use this issue to recover sensitive information. Update instructions The problem can be corrected by updating your system to the following package versions: Ubuntu 21.04 o libgcrypt20 - 1.8.7-2ubuntu2.1 Ubuntu 20.04 o libgcrypt20 - 1.8.5-5ubuntu1.1 Ubuntu 18.04 o libgcrypt20 - 1.8.1-4ubuntu1.3 In general, a standard system update will make all the necessary changes. References o CVE-2021-33560 o CVE-2021-40528 Related notices o USN-5080-2 : libgcrypt20-doc, libgcrypt11-dev, libgcrypt20, libgcrypt20-dev - --------------------------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. 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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). 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