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Files Date: 2021-08-24

OpenSSL Toolkit 1.1.1l
Posted Aug 24, 2021
Site openssl.org

OpenSSL is a robust, fully featured Open Source toolkit implementing the Secure Sockets Layer (SSL v2/v3) and Transport Layer Security (TLS v1) protocols with full-strength cryptography world-wide.

Changes: Fixed an SM2 Decryption Buffer Overflow. Fixed various read buffer overruns processing ASN.1 strings.
tags | tool, encryption, protocol
systems | unix
advisories | CVE-2021-3711, CVE-2021-3712
SHA-256 | 0b7a3e5e59c34827fe0c3a74b7ec8baef302b98fa80088d7f9153aa16fa76bd1
Ubuntu Security Notice USN-5050-1
Posted Aug 24, 2021
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 5050-1 - It was discovered that the bluetooth subsystem in the Linux kernel did not properly perform access control. An authenticated attacker could possibly use this to expose sensitive information. Michael Brown discovered that the Xen netback driver in the Linux kernel did not properly handle malformed packets from a network PV frontend, leading to a use-after-free vulnerability. An attacker in a guest VM could use this to cause a denial of service or possibly execute arbitrary code. Various other issues were also addressed.

tags | advisory, denial of service, arbitrary, kernel
systems | linux, ubuntu
advisories | CVE-2020-26558, CVE-2021-28691, CVE-2021-3564, CVE-2021-3573, CVE-2021-38208
SHA-256 | 15f18b4a1645df7896d1474336043a68629898f3145352b2946dd200efd3f028
OpenSSL Security Advisory 20210824
Posted Aug 24, 2021
Site openssl.org

OpenSSL Security Advisory 20210824 - In order to decrypt SM2 encrypted data an application is expected to call the API function EVP_PKEY_decrypt(). Typically an application will call this function twice. The first time, on entry, the "out" parameter can be NULL and, on exit, the "outlen" parameter is populated with the buffer size required to hold the decrypted plaintext. The application can then allocate a sufficiently sized buffer and call EVP_PKEY_decrypt() again, but this time passing a non-NULL value for the "out" parameter. Other issues were also addressed.

tags | advisory
advisories | CVE-2021-3711, CVE-2021-3712
SHA-256 | 66334c85ddd9c930da8fe00ca3eaff4182ef23553e0a3eadf85842e9a513e5bb
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